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March 2003
- 7 participants
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This report has been generated at Fri Mar 28 21:50:09 2003 AEST.
The report analyses the BGP Routing Table of an AS4637 (Reach) router
and generates a report on aggregation potential within the table.
Check http://www.cidr-report.org/as4637 for a current version of this report.
Recent Table History
Date Prefixes CIDR Agg
21-03-03 120815 86434
22-03-03 120741 86424
23-03-03 120589 86556
24-03-03 120679 86593
25-03-03 120712 86324
26-03-03 120739 86276
27-03-03 120877 86281
28-03-03 120855 86349
AS Summary
14836 Number of ASes in routing system
5851 Number of ASes announcing only one prefix
1555 Largest number of prefixes announced by an AS
AS701 : ALTERNET-AS UUNET Technologies, Inc.
73048064 Largest address span announced by an AS (/32s)
AS568 : SUMNET-AS DISO-UNRRA
Aggregation Summary
The algorithm used in this report proposes aggregation only
when there is a precise match using the AS path, so as
to preserve traffic transit policies. Aggregation is also
proposed across non-advertised address space ('holes').
--- 28Mar03 ---
ASnum NetsNow NetsAggr NetGain % Gain Description
Table 121000 86362 34638 28.6% All ASes
AS3908 1048 537 511 48.8% SUPERNETASBLK SuperNet, Inc.
AS18566 509 14 495 97.2% COVAD Covad Communications
AS4151 585 107 478 81.7% USDA-1 USDA
AS701 1555 1115 440 28.3% ALTERNET-AS UUNET
Technologies, Inc.
AS7843 599 198 401 66.9% ADELPHIA-AS Adelphia Corp.
AS7018 1346 952 394 29.3% ATT-INTERNET4 AT&T WorldNet
Services
AS4323 561 176 385 68.6% TW-COMM Time Warner
Communications, Inc.
AS1221 1109 813 296 26.7% ASN-TELSTRA Telstra Pty Ltd
AS1239 968 688 280 28.9% SPRINTLINK Sprint
AS6197 476 202 274 57.6% BATI-ATL BellSouth Network
Solutions, Inc
AS22927 286 14 272 95.1% AR-TEAR2-LACNIC TELEFONICA DE
ARGENTINA
AS6198 450 182 268 59.6% BATI-MIA BellSouth Network
Solutions, Inc
AS705 534 268 266 49.8% ASN-ALTERNET UUNET
Technologies, Inc.
AS4355 382 116 266 69.6% ERMS-EARTHLNK EARTHLINK, INC
AS1 685 429 256 37.4% GNTY-1 Genuity
AS4814 267 15 252 94.4% CHINANET-BEIJING-AP China
Telecom (Group)
AS2386 499 249 250 50.1% INS-AS AT&T Data
Communications Services
AS17676 235 28 207 88.1% GIGAINFRA XTAGE CORPORATION
AS22291 239 39 200 83.7% CHARTER-LA Charter
Communications
AS27364 265 65 200 75.5% ACS-INTERNET Armstrong Cable
Services
AS7132 674 475 199 29.5% SBIS-AS SBC Internet Services
- Southwest
AS4134 316 123 193 61.1% CHINANET-BACKBONE
No.31,Jin-rong Street
AS22773 197 8 189 95.9% CCINET-2 Cox Communications
Inc. Atlanta
AS209 526 339 187 35.6% ASN-QWEST Qwest
AS690 503 316 187 37.2% MERIT-AS-27 Merit Network Inc.
AS6347 373 193 180 48.3% DIAMOND SAVVIS Communications
Corporation
AS3561 520 344 176 33.8% CWUSA Cable & Wireless USA
AS2048 259 87 172 66.4% LANET-1 State of Louisiana
AS17557 375 214 161 42.9% PKTELECOM-AS-AP Pakistan
Telecom
AS6140 290 140 150 51.7% IMPSAT-USA ImpSat
Total 16631 8446 8185 49.2% Top 30 total
Please see http://www.cidr-report.org for the full report
------------------------------------
Copies of this report are mailed to:
nanog(a)merit.edu
eof-list(a)ripe.net
apops(a)apops.net
routing-wg(a)ripe.net
afnog(a)afnog.org
1
0
This is an automated weekly mailing describing the state of the Internet
Routing Table as seen from APNIC's router in Japan.
Daily listings are sent to bgp-stats(a)lists.apnic.net
For a graphical representation, please see http://www.apnic.net/stats/bgp.
If you have any comments please contact Philip Smith <pfs(a)cisco.com>.
Routing Table Report 20:00 +10GMT Fri 28 Mar, 2003
Analysis Summary
----------------
BGP routing table entries examined: 122998
Prefixes after maximum aggregation: 78122
Unique aggregates announced to Internet: 59135
Total ASes present in the Internet Routing Table: 14894
Origin-only ASes present in the Internet Routing Table: 12911
Origin ASes announcing only one prefix: 5837
Transit ASes present in the Internet Routing Table: 1983
Transit-only ASes present in the Internet Routing Table: 72
Average AS path length visible in the Internet Routing Table: 4.7
Max AS path length visible: 255
Illegal AS announcements present in the Routing Table: 2
Non-routable prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 19
Number of addresses announced to Internet: 1220551781
Equivalent to 72 /8s, 192 /16s and 36 /24s
Percentage of available address space announced: 32.9
Percentage of allocated address space announced: 59.8
Percentage of available address space allocated: 55.0
Total number of prefixes smaller than registry allocations: 57742
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 20725
Total APNIC prefixes after maximum aggregation: 12301
Prefixes being announced from the APNIC address blocks: 19182
Unique aggregates announced from the APNIC address blocks: 11850
APNIC Region origin ASes present in the Internet Routing Table: 1758
APNIC Region origin ASes announcing only one prefix: 516
APNIC Region transit ASes present in the Internet Routing Table: 288
Average APNIC Region AS path length visible: 4.8
Max APNIC Region AS path length visible: 15
Number of APNIC addresses announced to Internet: 108415488
Equivalent to 6 /8s, 118 /16s and 74 /24s
Percentage of available APNIC address space announced: 64.2
APNIC AS Blocks 4608 - 4864, 7467 - 7722, 9216 - 10239
17408 - 18431, 23552 - 24575
APNIC Address Blocks 61/8, 202/7, 210/7, 218/7, 220/7 and 222/8
ARIN Region Analysis Summary
----------------------------
Prefixes being announced by ARIN Region ASes: 75705
Total ARIN prefixes after maximum aggregation: 47969
Prefixes being announced from the ARIN address blocks: 53900
Unique aggregates announced from the ARIN address blocks: 16821
ARIN Region origin ASes present in the Internet Routing Table: 8263
ARIN Region origin ASes announcing only one prefix: 2788
ARIN Region transit ASes present in the Internet Routing Table: 793
Average ARIN Region AS path length visible: 4.5
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 188991296
Equivalent to 11 /8s, 67 /16s and 199 /24s
Percentage of available ARIN address space announced: 70.4
ARIN AS Blocks 1 - 1876, 1902 - 2042, 2044 - 2046, 2048 - 2106
2138 - 2584, 2615 - 2772, 2823 - 2829, 2880 - 3153
3354 - 4607, 4865 - 5119, 5632 - 6655, 6912 - 7466
7723 - 8191, 10240 - 12287, 13312 - 15359
16384 - 17407, 18432 - 20479, 21504 - 23551
25600 - 26591, 26624 - 27647, 29695 - 30719
ARIN Address Blocks 24/8, 63/8, 64/6, 68/7, 199/8, 204/6, 208/7
and 216/8
RIPE Region Analysis Summary
----------------------------
Prefixes being announced by RIPE Region ASes: 21357
Total RIPE prefixes after maximum aggregation: 15641
Prefixes being announced from the RIPE address blocks: 17880
Unique aggregates announced from the RIPE address blocks: 11859
RIPE Region origin ASes present in the Internet Routing Table: 4470
RIPE Region origin ASes announcing only one prefix: 2446
RIPE Region transit ASes present in the Internet Routing Table: 808
Average RIPE Region AS path length visible: 5.2
Max RIPE Region AS path length visible: 16
Number of RIPE addresses announced to Internet: 128518400
Equivalent to 7 /8s, 169 /16s and 9 /24s
Percentage of available RIPE address space announced: 76.6
RIPE AS Blocks 1877 - 1901, 2043, 2047, 2107 - 2136, 2585 - 2614
2773 - 2822, 2830 - 2879, 3154 - 3353, 5377 - 5631
6656 - 6911, 8192 - 9215, 12288 - 13311, 15360 - 16383
20480 - 21503, 24576 - 25599, 28672 - 29695
RIPE Address Blocks 62/8, 80/7, 82/8, 188/8, 193/8, 194/7,
212/7 and 217/8
LACNIC Region Analysis Summary
------------------------------
Prefixes being announced by LACNIC Region ASes: 5209
Total LACNIC prefixes after maximum aggregation: 2211
Prefixes being announced from the LACNIC address blocks: 4635
Unique aggregates announced from the LACNIC address blocks: 2949
LACNIC Region origin ASes present in the Internet Routing Table: 331
LACNIC Region origin ASes announcing only one prefix: 87
LACNIC Region transit ASes present in the Internet Routing Table: 70
Average LACNIC Region AS path length visible: 5.1
Max LACNIC Region AS path length visible: 15
Number of LACNIC addresses announced to Internet: 12399872
Equivalent to 0 /8s, 189 /16s and 53 /24s
Percentage of available LACNIC address space announced: 73.9
LACNIC AS Blocks 26592 - 26623, 27648 - 28671
LACNIC Address Blocks 200/8
APNIC Region per AS prefix count summary
----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
1221 1104 1106 808 Telstra Pty Ltd
703 406 370 314 UUNET
2907 385 1975 364 SINET Japan
17557 375 28 141 Pakistan Telecom
2764 324 340 291 connect.com.au pty ltd
4134 314 2698 104 Data Communications Bureau
7474 307 276 208 Optus Communications Pty Ltd
4814 267 79 15 China Telecom (Group)
3786 251 772 212 DACOM Corporation
17676 237 3654 25 XTAGE CORPORATION
4755 229 133 74 Videsh Sanchar Nigam Ltd. Aut
9583 219 33 14 Satyam Infoway Ltd.,
4766 211 2074 158 Korea Internet Exchange for "
9443 179 58 78 Primus Telecommunications
9800 174 221 46 CHINA UNICOM
9238 135 8 17 TATA ISP
4716 128 717 122 TTnet
9498 128 9 19 BHARTI BT INTERNET LTD.
4739 127 57 116 Commerical Internet eXchange
7539 127 166 121 TANet2, sponsored by NSC, TAI
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
701 1576 8935 1116 UUNET Technologies, Inc.
7018 1350 7141 942 AT&T
3908 1073 1588 481 Supernet, Inc.
1239 978 3123 695 Sprint
1 690 8073 427 GENUITY
7132 674 5939 475 Southwestern Bell Internet Se
7843 602 400 169 Adelphia Corp.
3561 593 2352 345 Cable & Wireless USA
4151 585 691 60 USDA
4323 562 490 174 Time Warner Communications, I
852 553 1107 436 Telus Advanced Communications
18566 543 122 13 Covad Communications
705 535 208 269 UUNET Technologies, Inc.
209 532 2105 339 Qwest
690 503 73 316 Merit Network
7066 500 204 255 Virginia Polytechnic Institut
2386 499 481 247 AT&T Data Communications Serv
6197 476 338 196 BellSouth Network Solutions,
6198 448 222 175 BellSouth Network Solutions,
20115 419 173 275 Charter Communications
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 783 2236 649 UUNET - Commercial IP service
3301 311 1174 301 TeliaNet Sweden
3215 308 835 173 France Telecom Transpac
3320 267 1996 230 Deutsche Telekom AG
680 232 2053 229 DFN-IP service G-WiN
5400 223 77 106 BT Ignite European Backbone
1257 217 328 191 SWIPnet Swedish IP Network
719 202 307 125 LANLINK autonomous system
5515 187 779 161 Sonera Solution Autonomous Sy
786 180 1874 180 The JANET IP Service
20858 153 17 3 This AS will be used to conne
8708 150 42 146 Romania Data Systems S.A.
3303 145 517 144 Swisscom Ltd
8220 136 215 128 COLT Internet - International
12302 123 18 30 MobiFon S.A.
2856 119 1298 109 BTnet UK Regional network
3269 112 753 62 TELECOM ITALIA
3246 110 384 107 Song Networks
3233 107 11 12 RNC - Romanian Natioanal R&D
3352 106 734 32 Ibernet, Internet Access Netw
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
6140 290 98 107 ImpSat
7303 241 36 59 Telecom Argentina Stet-France
8151 216 349 116 UniNet S.A. de C.V.
11172 165 66 33 Servicios Alestra S.A de C.V
6503 155 191 109 AVANTEL, S.A.
16814 139 9 18 NSS, S.A.
11340 109 3 37 Red Universitaria Nacional
10620 107 7 31 TVCABLE BOGOTA
6147 76 62 20 Telefonica Del Peru
1916 75 306 45 Fundacao de Amparo a Pesquisa
11992 74 8 36 Integrated Systems
6535 73 5 21 Chilesat Servicios Empresari
8065 73 6 18 Empresas Publicas de Medellin
15311 71 27 36 Telefonica Empresas
4270 69 18 10 Red de Interconexion Universi
7080 64 4 1 Electronica y Comunicaciones
7927 64 5 39 Global One Venezuela
11830 64 4 25 Instituto Costarricense de El
7984 61 11 40 Global One Colombia
15034 59 5 31 TIBA SA
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
3908 1073 592 Supernet, Inc.
18566 543 530 Covad Communications
4151 585 525 USDA
7843 602 433 Adelphia Corp.
7018 1350 408 AT&T
4323 562 388 Time Warner Communications, I
1221 1104 296 Telstra Pty Ltd
6347 375 293 SAVVIS Communications Corpora
1239 978 283 Sprint
6197 476 280 BellSouth Network Solutions,
4355 387 278 EarthLink, Inc.
6198 448 273 BellSouth Network Solutions,
22927 286 272 TELEFONICA DE ARGENTINA
705 535 266 UUNET Technologies, Inc.
1 690 263 GENUITY
2386 499 252 AT&T Data Communications Serv
4814 267 252 China Telecom (Group)
3561 593 248 Cable & Wireless USA
27364 265 247 Armstrong Cable Services
7066 500 245 Virginia Polytechnic Institut
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
1877 UNALLOCATED 192.108.199.0/24 1880 Stupi, house man's p
65501 PRIVATE 200.73.26.0/24 18747 IFX Communication Ve
Advertised Unallocated Addresses
--------------------------------
Network Origin AS Description
39.0.0.0/8 4554 Exchange Point Blocks
132.0.0.0/10 568 DISO-UNRRA
135.0.0.0/13 10455 Lucent Technologies
137.0.0.0/13 568 DISO-UNRRA
158.0.0.0/13 568 DISO-UNRRA
192.43.230.0/24 4738 South Australian Academic Res
192.44.0.0/19 702 UUNET - Commercial IP service
192.83.16.0/20 5515 Sonera Solution Autonomous Sy
192.83.32.0/19 5515 Sonera Solution Autonomous Sy
192.83.96.0/22 5515 Sonera Solution Autonomous Sy
192.83.100.0/24 5515 Sonera Solution Autonomous Sy
192.119.135.0/24 270 NASA
192.135.50.0/24 7018 AT&T
192.136.79.0/24 719 LANLINK autonomous system
192.136.135.0/24 1239 Sprint
192.153.136.0/21 568 DISO-UNRRA
192.158.249.0/24 27319 INTERNET SOFTWARE CONSORTIUM,
192.172.0.0/19 568 DISO-UNRRA
192.243.36.0/23 2044 AUSNet, Inc.
Number of prefixes announced per prefix length (Global)
-------------------------------------------------------
/1:0 /2:0 /3:0 /4:0 /5:0 /6:0
/7:0 /8:18 /9:3 /10:8 /11:13 /12:47
/13:91 /14:243 /15:455 /16:7365 /17:1636 /18:2939
/19:8272 /20:8227 /21:5866 /22:8858 /23:10655 /24:67415
/25:194 /26:198 /27:129 /28:125 /29:79 /30:90
/31:4 /32:68
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
3908 671 1073 Supernet, Inc.
18566 538 543 Covad Communications
702 486 783 UUNET - Commercial IP service
7018 465 1350 AT&T
701 459 1576 UUNET Technologies, Inc.
690 452 503 Merit Network
7066 399 500 Virginia Polytechnic Institut
1239 374 978 Sprint
6197 355 476 BellSouth Network Solutions,
6198 355 448 BellSouth Network Solutions,
7843 355 602 Adelphia Corp.
2386 299 499 AT&T Data Communications Serv
20115 292 419 Charter Communications
22927 285 286 TELEFONICA DE ARGENTINA
705 281 535 UUNET Technologies, Inc.
6140 277 290 ImpSat
27364 258 265 Armstrong Cable Services
7303 240 241 Telecom Argentina Stet-France
3215 232 308 France Telecom Transpac
209 225 532 Qwest
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:2 12:664 13:1 15:4 17:2 20:10
24:770 25:1 32:93 38:63 40:18 44:2
55:1 57:16 61:462 62:515 63:1947 64:1475
65:1902 66:1606 67:202 68:301 69:70 80:335
81:109 128:149 129:210 130:45 131:83 132:11
133:11 134:146 135:4 136:113 137:111 138:106
139:67 140:149 141:85 142:97 143:47 144:95
145:16 146:266 147:90 148:274 149:74 150:42
151:66 152:248 153:52 154:2 155:112 156:45
157:44 158:123 159:140 160:33 161:61 162:127
163:81 164:307 165:145 166:74 167:322 168:397
169:56 170:316 171:6 192:5303 193:2392 194:1989
195:977 196:478 198:3570 199:3276 200:2883 202:3649
203:5050 204:3053 205:2025 206:2393 207:2407 208:2681
209:2816 210:733 211:332 212:988 213:773 214:20
215:22 216:3234 217:605 218:82 219:11 220:54
End of report
1
0
This report has been generated at Fri Mar 21 21:46:30 2003 AEST.
The report analyses the BGP Routing Table of an AS4637 (Reach) router
and generates a report on aggregation potential within the table.
Check http://www.cidr-report.org/as4637 for a current version of this report.
Recent Table History
Date Prefixes CIDR Agg
14-03-03 120659 86373
15-03-03 120724 85975
16-03-03 120525 85886
17-03-03 120567 85987
18-03-03 120637 86171
19-03-03 120704 86222
20-03-03 120817 86331
21-03-03 120815 86377
AS Summary
14780 Number of ASes in routing system
5842 Number of ASes announcing only one prefix
1555 Largest number of prefixes announced by an AS
AS701 : ALTERNET-AS UUNET Technologies, Inc.
73048064 Largest address span announced by an AS (/32s)
AS568 : SUMNET-AS DISO-UNRRA
Aggregation Summary
The algorithm used in this report proposes aggregation only
when there is a precise match using the AS path, so as
to preserve traffic transit policies. Aggregation is also
proposed across non-advertised address space ('holes').
--- 21Mar03 ---
ASnum NetsNow NetsAggr NetGain % Gain Description
Table 120844 86356 34488 28.5% All ASes
AS3908 1097 536 561 51.1% SUPERNETASBLK SuperNet, Inc.
AS18566 505 13 492 97.4% COVAD Covad Communications
AS4151 545 108 437 80.2% USDA-1 USDA
AS701 1555 1126 429 27.6% ALTERNET-AS UUNET
Technologies, Inc.
AS7843 614 214 400 65.1% ADELPHIA-AS Adelphia Corp.
AS4323 555 173 382 68.8% TW-COMM Time Warner
Communications, Inc.
AS7018 1353 982 371 27.4% ATT-INTERNET4 AT&T WorldNet
Services
AS1221 1104 808 296 26.8% ASN-TELSTRA Telstra Pty Ltd
AS22927 295 14 281 95.3% AR-TEAR2-LACNIC TELEFONICA DE
ARGENTINA
AS1239 972 692 280 28.8% SPRINTLINK Sprint
AS1 705 430 275 39.0% GNTY-1 Genuity
AS6197 475 202 273 57.5% BATI-ATL BellSouth Network
Solutions, Inc
AS4355 385 119 266 69.1% ERMS-EARTHLNK EARTHLINK, INC
AS6198 448 183 265 59.2% BATI-MIA BellSouth Network
Solutions, Inc
AS705 457 203 254 55.6% ASN-ALTERNET UUNET
Technologies, Inc.
AS4814 264 15 249 94.3% CHINANET-BEIJING-AP China
Telecom (Group)
AS2386 496 275 221 44.6% INS-AS AT&T Data
Communications Services
AS27364 278 69 209 75.2% ACS-INTERNET Armstrong Cable
Services
AS17676 233 29 204 87.6% GIGAINFRA XTAGE CORPORATION
AS22291 243 48 195 80.2% CHARTER-LA Charter
Communications
AS4134 310 119 191 61.6% CHINANET-BACKBONE
No.31,Jin-rong Street
AS209 531 341 190 35.8% ASN-QWEST Qwest
AS690 504 314 190 37.7% MERIT-AS-27 Merit Network Inc.
AS6347 370 194 176 47.6% DIAMOND SAVVIS Communications
Corporation
AS3561 517 342 175 33.8% CWUSA Cable & Wireless USA
AS2048 259 87 172 66.4% LANET-1 State of Louisiana
AS17557 374 211 163 43.6% PKTELECOM-AS-AP Pakistan
Telecom
AS22773 191 32 159 83.2% CCINET-2 Cox Communications
Inc. Atlanta
AS7303 242 89 153 63.2% AR-TAST-LACNIC Telecom
Argentina Stet-France Telecom
S.A.
AS8372 182 30 152 83.5% COLT-UK-AS COLT Internet UK
Access Network.
Total 16059 7998 8061 50.2% Top 30 total
Please see http://www.cidr-report.org for the full report
------------------------------------
Copies of this report are mailed to:
nanog(a)merit.edu
eof-list(a)ripe.net
apops(a)apops.net
routing-wg(a)ripe.net
afnog(a)afnog.org
1
0
This is an automated weekly mailing describing the state of the Internet
Routing Table as seen from APNIC's router in Japan.
Daily listings are sent to bgp-stats(a)lists.apnic.net
For a graphical representation, please see http://www.apnic.net/stats/bgp.
If you have any comments please contact Philip Smith <pfs(a)cisco.com>.
Routing Table Report 20:00 +10GMT Fri 21 Mar, 2003
Analysis Summary
----------------
BGP routing table entries examined: 123374
Prefixes after maximum aggregation: 78112
Unique aggregates announced to Internet: 59112
Total ASes present in the Internet Routing Table: 14843
Origin-only ASes present in the Internet Routing Table: 12879
Origin ASes announcing only one prefix: 5830
Transit ASes present in the Internet Routing Table: 1964
Transit-only ASes present in the Internet Routing Table: 66
Average AS path length visible in the Internet Routing Table: 5.4
Max AS path length visible: 20
Illegal AS announcements present in the Routing Table: 12
Non-routable prefixes present in the Routing Table: 0
Prefixes being announced from the IANA Reserved Address blocks: 20
Number of addresses announced to Internet: 1218233637
Equivalent to 72 /8s, 156 /16s and 197 /24s
Percentage of available address space announced: 32.9
Percentage of allocated address space announced: 59.2
Percentage of available address space allocated: 55.5
Total number of prefixes smaller than registry allocations: 57969
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 20750
Total APNIC prefixes after maximum aggregation: 12171
Prefixes being announced from the APNIC address blocks: 19238
Unique aggregates announced from the APNIC address blocks: 11778
APNIC Region origin ASes present in the Internet Routing Table: 1747
APNIC Region origin ASes announcing only one prefix: 512
APNIC Region transit ASes present in the Internet Routing Table: 293
Average APNIC Region AS path length visible: 5.4
Max APNIC Region AS path length visible: 16
Number of APNIC addresses announced to Internet: 107707840
Equivalent to 6 /8s, 107 /16s and 125 /24s
Percentage of available APNIC address space announced: 57.1
APNIC AS Blocks 4608 - 4864, 7467 - 7722, 9216 - 10239
17408 - 18431, 23552 - 24575
APNIC Address Blocks 61/8, 202/7, 210/7, 218/7 and 220/6
ARIN Region Analysis Summary
----------------------------
Prefixes being announced by ARIN Region ASes: 75703
Total ARIN prefixes after maximum aggregation: 48106
Prefixes being announced from the ARIN address blocks: 53851
Unique aggregates announced from the ARIN address blocks: 16843
ARIN Region origin ASes present in the Internet Routing Table: 8244
ARIN Region origin ASes announcing only one prefix: 2799
ARIN Region transit ASes present in the Internet Routing Table: 791
Average ARIN Region AS path length visible: 5.3
Max ARIN Region AS path length visible: 17
Number of ARIN addresses announced to Internet: 187886400
Equivalent to 11 /8s, 50 /16s and 235 /24s
Percentage of available ARIN address space announced: 70.0
ARIN AS Blocks 1 - 1876, 1902 - 2042, 2044 - 2046, 2048 - 2106
2138 - 2584, 2615 - 2772, 2823 - 2829, 2880 - 3153
3354 - 4607, 4865 - 5119, 5632 - 6655, 6912 - 7466
7723 - 8191, 10240 - 12287, 13312 - 15359
16384 - 17407, 18432 - 20479, 21504 - 23551
25600 - 26591, 26624 - 27647
ARIN Address Blocks 24/8, 63/8, 64/6, 68/7, 199/8, 204/6, 208/7
and 216/8
RIPE Region Analysis Summary
----------------------------
Prefixes being announced by RIPE Region ASes: 21678
Total RIPE prefixes after maximum aggregation: 15636
Prefixes being announced from the RIPE address blocks: 18209
Unique aggregates announced from the RIPE address blocks: 11881
RIPE Region origin ASes present in the Internet Routing Table: 4459
RIPE Region origin ASes announcing only one prefix: 2433
RIPE Region transit ASes present in the Internet Routing Table: 802
Average RIPE Region AS path length visible: 5.9
Max RIPE Region AS path length visible: 20
Number of RIPE addresses announced to Internet: 128177920
Equivalent to 7 /8s, 163 /16s and 215 /24s
Percentage of available RIPE address space announced: 76.4
RIPE AS Blocks 1877 - 1901, 2043, 2047, 2107 - 2136, 2585 - 2614
2773 - 2822, 2830 - 2879, 3154 - 3353, 5377 - 5631
6656 - 6911, 8192 - 9215, 12288 - 13311, 15360 - 16383
20480 - 21503, 24576 - 25599, 28672 - 29695
RIPE Address Blocks 62/8, 80/7, 82/8, 188/8, 193/8, 194/7,
212/7 and 217/8
LACNIC Region Analysis Summary
------------------------------
Prefixes being announced by LACNIC Region ASes: 5232
Total LACNIC prefixes after maximum aggregation: 2199
Prefixes being announced from the LACNIC address blocks: 4624
Unique aggregates announced from the LACNIC address blocks: 2919
LACNIC Region origin ASes present in the Internet Routing Table: 329
LACNIC Region origin ASes announcing only one prefix: 86
LACNIC Region transit ASes present in the Internet Routing Table: 69
Average LACNIC Region AS path length visible: 5.8
Max LACNIC Region AS path length visible: 15
Number of LACNIC addresses announced to Internet: 12382976
Equivalent to 0 /8s, 188 /16s and 243 /24s
Percentage of available LACNIC address space announced: 73.8
LACNIC AS Blocks 26592 - 26623, 27648 - 28671
LACNIC Address Blocks 200/8
APNIC Region per AS prefix count summary
----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
1221 1101 1106 805 Telstra Pty Ltd
703 406 370 314 UUNET
2907 391 1976 368 SINET Japan
17557 376 27 139 Pakistan Telecom
2764 323 340 290 connect.com.au pty ltd
4134 310 2668 102 Data Communications Bureau
7474 306 276 208 Optus Communications Pty Ltd
4814 264 79 15 China Telecom (Group)
3786 250 772 212 DACOM Corporation
17676 235 3614 26 XTAGE CORPORATION
4755 231 135 75 Videsh Sanchar Nigam Ltd. Aut
9583 215 33 14 Satyam Infoway Ltd.,
4766 206 2074 155 Korea Internet Exchange for "
9443 178 57 77 Primus Telecommunications
9800 167 205 42 CHINA UNICOM
4765 152 10 14 World Net & Services Co., Ltd
9238 134 8 17 TATA ISP
4716 128 717 122 TTnet
4739 127 57 116 Commerical Internet eXchange
9768 125 384 64 Korea Telecom
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
701 1578 8828 1129 UUNET Technologies, Inc.
7018 1357 7143 941 AT&T
3908 1247 1588 479 Supernet, Inc.
1239 987 3153 701 Sprint
1 710 8071 427 GENUITY
7843 617 400 188 Adelphia Corp.
3561 590 2351 343 Cable & Wireless USA
4323 556 490 172 Time Warner Communications, I
852 553 1107 435 Telus Advanced Communications
4151 544 691 60 USDA
18566 539 121 12 Covad Communications
209 535 2091 340 Qwest
690 504 74 314 Merit Network
2386 496 481 244 AT&T Data Communications Serv
7066 490 204 254 Virginia Polytechnic Institut
6197 475 338 196 BellSouth Network Solutions,
705 457 186 203 UUNET Technologies, Inc.
6198 446 208 179 BellSouth Network Solutions,
20115 408 168 265 Charter Communications
3549 407 695 310 Global Crossing
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 783 2236 648 UUNET - Commercial IP service
8372 409 67 30 COLT Internet UK Access Netwo
3301 313 1175 303 TeliaNet Sweden
3215 310 835 174 France Telecom Transpac
3320 267 1996 230 Deutsche Telekom AG
680 232 2054 229 DFN-IP service G-WiN
1257 217 344 191 SWIPnet Swedish IP Network
5400 217 77 103 BT Ignite European Backbone
719 202 307 125 LANLINK autonomous system
5515 186 779 160 Sonera Solution Autonomous Sy
786 179 1874 179 The JANET IP Service
8708 153 42 150 Romania Data Systems S.A.
20858 151 17 3 This AS will be used to conne
3303 145 517 144 Swisscom Ltd
8220 133 211 124 COLT Internet - International
12302 123 18 30 MobiFon S.A.
2856 118 1298 108 BTnet UK Regional network
3269 112 753 62 TELECOM ITALIA
3233 106 10 19 RNC - Romanian Natioanal R&D
3246 105 360 102 Song Networks
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
6140 291 98 106 ImpSat
7303 242 36 56 Telecom Argentina Stet-France
8151 217 349 116 UniNet S.A. de C.V.
11172 165 66 33 Servicios Alestra S.A de C.V
6503 145 190 104 AVANTEL, S.A.
16814 139 9 18 NSS, S.A.
11340 110 3 38 Red Universitaria Nacional
10620 107 7 31 TVCABLE BOGOTA
1916 75 306 45 Fundacao de Amparo a Pesquisa
11992 75 8 35 Integrated Systems
8065 73 6 18 Empresas Publicas de Medellin
6147 72 62 19 Telefonica Del Peru
6535 71 4 22 Chilesat Servicios Empresari
15311 71 27 36 Telefonica Empresas
4270 69 18 10 Red de Interconexion Universi
7080 64 4 1 Electronica y Comunicaciones
7927 64 5 39 Global One Venezuela
13999 64 36 8 Mega Cable S.A. de C.V.
7984 61 11 40 Global One Colombia
7738 59 170 11 Telecomunicacoes da Bahia S.A
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
3908 1247 768 Supernet, Inc.
18566 539 527 Covad Communications
4151 544 484 USDA
7843 617 429 Adelphia Corp.
7018 1357 416 AT&T
4323 556 384 Time Warner Communications, I
8372 409 379 COLT Internet UK Access Netwo
1221 1101 296 Telstra Pty Ltd
6347 371 291 SAVVIS Communications Corpora
1239 987 286 Sprint
1 710 283 GENUITY
22927 295 281 TELEFONICA DE ARGENTINA
6197 475 279 BellSouth Network Solutions,
4355 387 273 EarthLink, Inc.
6198 446 267 BellSouth Network Solutions,
27364 278 260 Armstrong Cable Services
705 457 254 UUNET Technologies, Inc.
2386 496 252 AT&T Data Communications Serv
4814 264 249 China Telecom (Group)
3561 590 247 Cable & Wireless USA
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
1877 UNALLOCATED 192.108.199.0/24 1880 Stupi, house man's p
64521 PRIVATE 198.189.23.0/24 2151 California State Uni
64521 PRIVATE 198.189.24.0/24 2151 California State Uni
64524 PRIVATE 198.189.134.0/24 2151 California State Uni
64524 PRIVATE 198.189.135.0/24 2151 California State Uni
64524 PRIVATE 198.189.136.0/24 2151 California State Uni
64524 PRIVATE 198.189.137.0/24 2151 California State Uni
64524 PRIVATE 198.189.138.0/24 2151 California State Uni
64521 PRIVATE 198.189.158.0/24 2151 California State Uni
64521 PRIVATE 198.189.235.0/24 2151 California State Uni
64521 PRIVATE 198.189.236.0/24 2151 California State Uni
65501 PRIVATE 200.73.26.0/24 18747 IFX Communication Ve
Advertised Unregistered Addresses
---------------------------------
Network Origin AS Description
39.0.0.0/8 4554 Exchange Point Blocks
132.0.0.0/10 568 DISO-UNRRA
135.0.0.0/13 10455 Lucent Technologies
137.0.0.0/13 568 DISO-UNRRA
158.0.0.0/13 568 DISO-UNRRA
160.225.160.0/19 5676 Pacific Bell Internet Service
192.44.0.0/19 702 UUNET - Commercial IP service
192.83.16.0/20 5515 Sonera Solution Autonomous Sy
192.83.32.0/19 5515 Sonera Solution Autonomous Sy
192.83.96.0/22 5515 Sonera Solution Autonomous Sy
192.83.100.0/24 5515 Sonera Solution Autonomous Sy
192.119.135.0/24 270 NASA
192.135.50.0/24 7018 AT&T
192.136.79.0/24 719 LANLINK autonomous system
192.136.135.0/24 1239 Sprint
192.153.136.0/21 568 DISO-UNRRA
192.156.164.0/24 19548 Adelphia Business Solutions
192.158.249.0/24 27319 INTERNET SOFTWARE CONSORTIUM,
192.172.0.0/19 568 DISO-UNRRA
192.243.36.0/23 2044 AUSNet, Inc.
Number of prefixes announced per prefix length (Global)
-------------------------------------------------------
/1:0 /2:0 /3:0 /4:0 /5:0 /6:0
/7:0 /8:18 /9:3 /10:8 /11:13 /12:46
/13:89 /14:241 /15:450 /16:7352 /17:1631 /18:2918
/19:8235 /20:8220 /21:5845 /22:8845 /23:10594 /24:67757
/25:274 /26:347 /27:126 /28:118 /29:78 /30:94
/31:4 /32:68
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
3908 815 1247 Supernet, Inc.
18566 534 539 Covad Communications
702 486 783 UUNET - Commercial IP service
7018 468 1357 AT&T
701 459 1578 UUNET Technologies, Inc.
690 453 504 Merit Network
8372 396 409 COLT Internet UK Access Netwo
7066 389 490 Virginia Polytechnic Institut
1239 374 987 Sprint
7843 372 617 Adelphia Corp.
6198 355 446 BellSouth Network Solutions,
6197 354 475 BellSouth Network Solutions,
2386 296 496 AT&T Data Communications Serv
22927 294 295 TELEFONICA DE ARGENTINA
20115 283 408 Charter Communications
6140 278 291 ImpSat
27364 272 278 Armstrong Cable Services
7303 241 242 Telecom Argentina Stet-France
3215 234 310 France Telecom Transpac
209 226 535 Qwest
Number of /24s announced per /8 block (Global)
----------------------------------------------
12:665 13:1 15:4 17:2 20:10 24:789
25:1 32:92 34:1 38:61 40:18 44:2
55:1 57:15 61:453 62:508 63:1923 64:1468
65:1917 66:1580 67:220 68:321 69:64 80:337
81:99 128:150 129:225 130:45 131:83 132:11
133:11 134:144 135:4 136:113 137:115 138:107
139:67 140:146 141:97 142:94 143:46 144:100
145:18 146:265 147:89 148:270 149:75 150:42
151:87 152:250 153:51 154:2 155:108 156:46
157:45 158:123 159:139 160:33 161:60 162:124
163:89 164:311 165:143 166:74 167:320 168:408
169:55 170:310 171:6 192:5297 193:2397 194:1996
195:982 196:479 198:3636 199:3241 200:2873 202:3670
203:5148 204:3070 205:2028 206:2410 207:2430 208:2675
209:2803 210:736 211:326 212:1027 213:855 214:21
215:22 216:3239 217:598 218:82 219:9 220:54
End of report
1
0
Hello!
Could someone comment current situation with Internet Routing Registry System,
in particular:
1. Is there any standards or recomendations which describe or define IRR
hierarchy and its place in inter-AS interactions?
2. Is there any papers which describe IRR and RIR interoperations?
And a bit practical question - is there anything in IETF/RIPE documents
which can be used by ISP to declare its willingness to accept _only_
RIR-registered prefixes on external peers?
--
Regards,
Volodymyr.
1
0
This report has been generated at Fri Mar 14 21:45:21 2003 AEST.
The report analyses the BGP Routing Table of an AS4637 (Reach) router
and generates a report on aggregation potential within the table.
Check http://www.cidr-report.org/as4637 for a current version of this report.
Recent Table History
Date Prefixes CIDR Agg
07-03-03 120289 86148
08-03-03 120272 86188
09-03-03 120197 86257
10-03-03 120223 86324
11-03-03 120475 86388
12-03-03 120508 86345
13-03-03 120478 86334
14-03-03 120659 86376
AS Summary
14740 Number of ASes in routing system
5812 Number of ASes announcing only one prefix
1562 Largest number of prefixes announced by an AS
AS701 : ALTERNET-AS UUNET Technologies, Inc.
73048064 Largest address span announced by an AS (/32s)
AS568 : SUMNET-AS DISO-UNRRA
Aggregation Summary
The algorithm used in this report proposes aggregation only
when there is a precise match using the AS path, so as
to preserve traffic transit policies. Aggregation is also
proposed across non-advertised address space ('holes').
--- 14Mar03 ---
ASnum NetsNow NetsAggr NetGain % Gain Description
Table 120741 86391 34350 28.4% All ASes
AS3908 1097 537 560 51.0% SUPERNETASBLK SuperNet, Inc.
AS18566 518 25 493 95.2% COVAD Covad Communications
AS701 1562 1129 433 27.7% ALTERNET-AS UUNET
Technologies, Inc.
AS4151 535 109 426 79.6% USDA-1 USDA
AS7843 600 217 383 63.8% ADELPHIA-AS Adelphia Corp.
AS4323 555 173 382 68.8% TW-COMM Time Warner
Communications, Inc.
AS7018 1372 1021 351 25.6% ATT-INTERNET4 AT&T WorldNet
Services
AS6197 499 160 339 67.9% BATI-ATL BellSouth Network
Solutions, Inc
AS1221 1101 805 296 26.9% ASN-TELSTRA Telstra Pty Ltd
AS1239 974 690 284 29.2% SPRINTLINK Sprint
AS22927 295 14 281 95.3% AR-TEAR2-LACNIC TELEFONICA DE
ARGENTINA
AS4355 391 119 272 69.6% ERMS-EARTHLNK EARTHLINK, INC
AS705 449 195 254 56.6% ASN-ALTERNET UUNET
Technologies, Inc.
AS6198 451 200 251 55.7% BATI-MIA BellSouth Network
Solutions, Inc
AS4814 264 15 249 94.3% CHINANET-BEIJING-AP China
Telecom (Group)
AS1 656 431 225 34.3% GNTY-1 Genuity
AS17676 230 27 203 88.3% GIGAINFRA XTAGE CORPORATION
AS2386 480 280 200 41.7% INS-AS AT&T Data
Communications Services
AS6347 370 171 199 53.8% DIAMOND SAVVIS Communications
Corporation
AS22291 242 45 197 81.4% CHARTER-LA Charter
Communications
AS4134 309 115 194 62.8% CHINANET-BACKBONE
No.31,Jin-rong Street
AS690 503 313 190 37.8% MERIT-AS-27 Merit Network Inc.
AS209 530 341 189 35.7% ASN-QWEST Qwest
AS27364 258 84 174 67.4% ACS-INTERNET Armstrong Cable
Services
AS2048 258 87 171 66.3% LANET-1 State of Louisiana
AS17557 370 212 158 42.7% PKTELECOM-AS-AP Pakistan
Telecom
AS6140 292 140 152 52.1% IMPSAT-USA ImpSat
AS22773 184 33 151 82.1% CCINET-2 Cox Communications
Inc. Atlanta
AS6327 187 40 147 78.6% SHAWFIBER Shaw Fiberlink
Limited
AS7303 242 98 144 59.5% AR-TAST-LACNIC Telecom
Argentina Stet-France Telecom
S.A.
Total 15774 7826 7948 50.4% Top 30 total
Please see http://www.cidr-report.org for the full report
------------------------------------
Copies of this report are mailed to:
nanog(a)merit.edu
eof-list(a)ripe.net
apops(a)apops.net
routing-wg(a)ripe.net
afnog(a)afnog.org
1
0
This is an automated weekly mailing describing the state of the Internet
Routing Table as seen from APNIC's router in Japan.
Daily listings are sent to bgp-stats(a)lists.apnic.net
For a graphical representation, please see http://www.apnic.net/stats/bgp.
If you have any comments please contact Philip Smith <pfs(a)cisco.com>.
Routing Table Report 20:00 +10GMT Fri 14 Mar, 2003
Analysis Summary
----------------
BGP routing table entries examined: 122691
Prefixes after maximum aggregation: 77882
Unique aggregates announced to Internet: 59156
Total ASes present in the Internet Routing Table: 14794
Origin-only ASes present in the Internet Routing Table: 12844
Origin ASes announcing only one prefix: 5802
Transit ASes present in the Internet Routing Table: 1950
Transit-only ASes present in the Internet Routing Table: 63
Average AS path length visible in the Internet Routing Table: 5.4
Max AS path length visible: 17
Illegal AS announcements present in the Routing Table: 11
Non-routable prefixes present in the Routing Table: 0
Prefixes being announced from the IANA Reserved Address blocks: 19
Number of addresses announced to Internet: 1200324997
Equivalent to 71 /8s, 139 /16s and 129 /24s
Percentage of available address space announced: 32.4
Percentage of allocated address space announced: 58.4
Percentage of available address space allocated: 55.5
Total number of prefixes smaller than registry allocations: 57483
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 20728
Total APNIC prefixes after maximum aggregation: 12168
Prefixes being announced from the APNIC address blocks: 19176
Unique aggregates announced from the APNIC address blocks: 11712
APNIC Region origin ASes present in the Internet Routing Table: 1752
APNIC Region origin ASes announcing only one prefix: 520
APNIC Region transit ASes present in the Internet Routing Table: 291
Average APNIC Region AS path length visible: 5.4
Max APNIC Region AS path length visible: 16
Number of APNIC addresses announced to Internet: 107177632
Equivalent to 6 /8s, 99 /16s and 102 /24s
Percentage of available APNIC address space announced: 56.8
APNIC AS Blocks 4608 - 4864, 7467 - 7722, 9216 - 10239
17408 - 18431, 23552 - 24575
APNIC Address Blocks 61/8, 202/7, 210/7, 218/7 and 220/6
ARIN Region Analysis Summary
----------------------------
Prefixes being announced by ARIN Region ASes: 75400
Total ARIN prefixes after maximum aggregation: 47895
Prefixes being announced from the ARIN address blocks: 53746
Unique aggregates announced from the ARIN address blocks: 16847
ARIN Region origin ASes present in the Internet Routing Table: 8215
ARIN Region origin ASes announcing only one prefix: 2774
ARIN Region transit ASes present in the Internet Routing Table: 783
Average ARIN Region AS path length visible: 5.3
Max ARIN Region AS path length visible: 17
Number of ARIN addresses announced to Internet: 187492544
Equivalent to 11 /8s, 44 /16s and 232 /24s
Percentage of available ARIN address space announced: 69.8
ARIN AS Blocks 1 - 1876, 1902 - 2042, 2044 - 2046, 2048 - 2106
2138 - 2584, 2615 - 2772, 2823 - 2829, 2880 - 3153
3354 - 4607, 4865 - 5119, 5632 - 6655, 6912 - 7466
7723 - 8191, 10240 - 12287, 13312 - 15359
16384 - 17407, 18432 - 20479, 21504 - 23551
25600 - 26591, 26624 - 27647
ARIN Address Blocks 24/8, 63/8, 64/6, 68/7, 199/8, 204/6, 208/7
and 216/8
RIPE Region Analysis Summary
----------------------------
Prefixes being announced by RIPE Region ASes: 21250
Total RIPE prefixes after maximum aggregation: 15599
Prefixes being announced from the RIPE address blocks: 17757
Unique aggregates announced from the RIPE address blocks: 11851
RIPE Region origin ASes present in the Internet Routing Table: 4436
RIPE Region origin ASes announcing only one prefix: 2422
RIPE Region transit ASes present in the Internet Routing Table: 800
Average RIPE Region AS path length visible: 5.9
Max RIPE Region AS path length visible: 17
Number of RIPE addresses announced to Internet: 127895552
Equivalent to 7 /8s, 159 /16s and 136 /24s
Percentage of available RIPE address space announced: 76.2
RIPE AS Blocks 1877 - 1901, 2043, 2047, 2107 - 2136, 2585 - 2614
2773 - 2822, 2830 - 2879, 3154 - 3353, 5377 - 5631
6656 - 6911, 8192 - 9215, 12288 - 13311, 15360 - 16383
20480 - 21503, 24576 - 25599, 28672 - 29695
RIPE Address Blocks 62/8, 80/7, 82/8, 188/8, 193/8, 194/7,
212/7 and 217/8
LACNIC Region Analysis Summary
------------------------------
Prefixes being announced by LACNIC Region ASes: 5303
Total LACNIC prefixes after maximum aggregation: 2220
Prefixes being announced from the LACNIC address blocks: 4681
Unique aggregates announced from the LACNIC address blocks: 3037
LACNIC Region origin ASes present in the Internet Routing Table: 330
LACNIC Region origin ASes announcing only one prefix: 86
LACNIC Region transit ASes present in the Internet Routing Table: 66
Average LACNIC Region AS path length visible: 5.9
Max LACNIC Region AS path length visible: 15
Number of LACNIC addresses announced to Internet: 12343552
Equivalent to 0 /8s, 188 /16s and 89 /24s
Percentage of available LACNIC address space announced: 73.6
LACNIC AS Blocks 26592 - 26623, 27648 - 28671
LACNIC Address Blocks 200/8
APNIC Region per AS prefix count summary
----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
1221 1097 1106 801 Telstra Pty Ltd
703 404 370 313 UUNET
2907 387 1959 366 SINET Japan
17557 367 26 141 Pakistan Telecom
2764 324 340 291 connect.com.au pty ltd
4134 309 2662 98 Data Communications Bureau
7474 306 275 207 Optus Communications Pty Ltd
4814 264 79 15 China Telecom (Group)
3786 249 772 211 DACOM Corporation
17676 232 3574 24 XTAGE CORPORATION
4755 230 133 74 Videsh Sanchar Nigam Ltd. Aut
9583 217 33 13 Satyam Infoway Ltd.,
4766 206 2074 155 Korea Internet Exchange for "
9443 179 57 77 Primus Telecommunications
9800 166 205 41 CHINA UNICOM
4765 152 10 14 World Net & Services Co., Ltd
9238 138 8 17 TATA ISP
4716 128 733 122 TTnet
4739 128 57 116 Commerical Internet eXchange
7539 127 164 120 TANet2, sponsored by NSC, TAI
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
701 1571 8855 1128 UUNET Technologies, Inc.
7018 1374 7149 954 AT&T
3908 1263 1590 490 Supernet, Inc.
1239 980 3153 694 Sprint
1 663 8088 432 GENUITY
7843 603 413 190 Adelphia Corp.
4323 556 490 172 Time Warner Communications, I
852 553 1107 435 Telus Advanced Communications
4151 534 691 59 USDA
209 532 2091 340 Qwest
18566 518 119 10 Covad Communications
690 503 73 313 Merit Network
6197 493 559 115 BellSouth Network Solutions,
3561 492 2303 338 Cable & Wireless USA
7066 490 204 254 Virginia Polytechnic Institut
2386 480 479 242 AT&T Data Communications Serv
705 449 165 195 UUNET Technologies, Inc.
6198 449 196 196 BellSouth Network Solutions,
3549 405 695 309 Global Crossing
20115 393 166 262 Charter Communications
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 786 2234 650 UUNET - Commercial IP service
3301 314 1143 304 TeliaNet Sweden
3215 307 818 172 France Telecom Transpac
3320 266 1996 229 Deutsche Telekom AG
680 232 2054 229 DFN-IP service G-WiN
1257 219 370 196 SWIPnet Swedish IP Network
5400 219 78 102 BT Ignite European Backbone
719 202 307 125 LANLINK autonomous system
5515 186 779 160 Sonera Solution Autonomous Sy
786 179 1874 179 The JANET IP Service
8708 153 42 150 Romania Data Systems S.A.
20858 147 17 3 This AS will be used to conne
3303 145 517 144 Swisscom Ltd
8220 128 182 119 COLT Internet - International
12302 123 18 30 MobiFon S.A.
2856 118 1298 108 BTnet UK Regional network
3269 110 750 60 TELECOM ITALIA
3233 108 11 12 RNC - Romanian Natioanal R&D
3246 105 360 102 Song Networks
3352 101 670 31 Ibernet, Internet Access Netw
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
6140 292 98 105 ImpSat
7303 242 36 56 Telecom Argentina Stet-France
8151 215 341 117 UniNet S.A. de C.V.
11172 161 66 33 Servicios Alestra S.A de C.V
6503 158 191 110 AVANTEL, S.A.
16814 139 9 18 NSS, S.A.
13999 127 36 8 Mega Cable S.A. de C.V.
11340 110 3 38 Red Universitaria Nacional
10620 107 7 31 TVCABLE BOGOTA
6147 76 62 20 Telefonica Del Peru
1916 75 306 45 Fundacao de Amparo a Pesquisa
11992 74 8 35 Integrated Systems
8065 73 6 18 Empresas Publicas de Medellin
6535 72 5 23 Chilesat Servicios Empresari
15311 71 27 36 Telefonica Empresas
4270 69 18 10 Red de Interconexion Universi
7984 66 11 42 Global One Colombia
7080 64 4 1 Electronica y Comunicaciones
7927 64 5 39 Global One Venezuela
11830 61 5 20 Instituto Costarricense de El
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
3908 1263 773 Supernet, Inc.
18566 518 508 Covad Communications
4151 534 475 USDA
7018 1374 420 AT&T
7843 603 413 Adelphia Corp.
4323 556 384 Time Warner Communications, I
6197 493 378 BellSouth Network Solutions,
11492 321 317 Cable One
1221 1097 296 Telstra Pty Ltd
6347 371 291 SAVVIS Communications Corpora
1239 980 286 Sprint
22927 295 281 TELEFONICA DE ARGENTINA
4355 391 279 EarthLink, Inc.
705 449 254 UUNET Technologies, Inc.
6198 449 253 BellSouth Network Solutions,
4814 264 249 China Telecom (Group)
27364 258 240 Armstrong Cable Services
2386 480 238 AT&T Data Communications Serv
7066 490 236 Virginia Polytechnic Institut
1 663 231 GENUITY
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
1877 UNALLOCATED 192.108.199.0/24 1880 Stupi, house man's p
64521 PRIVATE 198.189.23.0/24 2151 California State Uni
64521 PRIVATE 198.189.24.0/24 2151 California State Uni
64524 PRIVATE 198.189.134.0/24 2151 California State Uni
64524 PRIVATE 198.189.135.0/24 2151 California State Uni
64524 PRIVATE 198.189.136.0/24 2151 California State Uni
64524 PRIVATE 198.189.137.0/24 2151 California State Uni
64524 PRIVATE 198.189.138.0/24 2151 California State Uni
64521 PRIVATE 198.189.158.0/24 2151 California State Uni
64521 PRIVATE 198.189.235.0/24 2151 California State Uni
64521 PRIVATE 198.189.236.0/24 2151 California State Uni
Advertised Unregistered Addresses
---------------------------------
Network Origin AS Description
39.0.0.0/8 4554 Exchange Point Blocks
132.0.0.0/10 568 DISO-UNRRA
135.0.0.0/13 10455 Lucent Technologies
137.0.0.0/13 568 DISO-UNRRA
158.0.0.0/13 568 DISO-UNRRA
192.44.0.0/19 702 UUNET - Commercial IP service
192.83.16.0/20 5515 Sonera Solution Autonomous Sy
192.83.32.0/19 5515 Sonera Solution Autonomous Sy
192.83.96.0/22 5515 Sonera Solution Autonomous Sy
192.83.100.0/24 5515 Sonera Solution Autonomous Sy
192.119.135.0/24 270 NASA
192.135.50.0/24 7018 AT&T
192.136.79.0/24 719 LANLINK autonomous system
192.136.135.0/24 1239 Sprint
192.153.136.0/21 568 DISO-UNRRA
192.156.164.0/24 19548 Adelphia Business Solutions
192.158.249.0/24 27319 INTERNET SOFTWARE CONSORTIUM,
192.172.0.0/19 568 DISO-UNRRA
192.243.36.0/23 2044 AUSNet, Inc.
Number of prefixes announced per prefix length (Global)
-------------------------------------------------------
/1:0 /2:0 /3:0 /4:0 /5:0 /6:0
/7:0 /8:17 /9:3 /10:8 /11:13 /12:46
/13:89 /14:238 /15:448 /16:7343 /17:1609 /18:2908
/19:8230 /20:8163 /21:5852 /22:8860 /23:10607 /24:67496
/25:167 /26:193 /27:109 /28:87 /29:63 /30:78
/31:4 /32:60
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
3908 832 1263 Supernet, Inc.
18566 513 518 Covad Communications
702 490 786 UUNET - Commercial IP service
7018 478 1374 AT&T
690 452 503 Merit Network
701 451 1571 UUNET Technologies, Inc.
7066 389 490 Virginia Polytechnic Institut
1239 369 980 Sprint
6197 362 493 BellSouth Network Solutions,
7843 361 603 Adelphia Corp.
6198 359 449 BellSouth Network Solutions,
11492 320 321 Cable One
22927 294 295 TELEFONICA DE ARGENTINA
2386 280 480 AT&T Data Communications Serv
6140 279 292 ImpSat
20115 269 393 Charter Communications
27364 250 258 Armstrong Cable Services
7303 241 242 Telecom Argentina Stet-France
3215 232 307 France Telecom Transpac
209 220 532 Qwest
Number of /24s announced per /8 block (Global)
----------------------------------------------
12:659 13:1 15:4 17:2 20:10 24:911
25:1 32:90 34:1 38:60 40:18 44:2
55:1 57:15 61:452 62:497 63:1927 64:1440
65:1918 66:1551 67:218 68:294 69:56 80:330
81:98 128:98 129:224 130:42 131:83 132:11
133:11 134:146 135:4 136:114 137:116 138:106
139:65 140:145 141:124 142:94 143:47 144:93
145:18 146:264 147:86 148:272 149:73 150:43
151:113 152:253 153:51 154:2 155:108 156:43
157:45 158:123 159:139 160:35 161:60 162:126
163:86 164:304 165:136 166:74 167:319 168:394
169:55 170:308 171:9 192:5301 193:2393 194:2004
195:983 196:475 198:3606 199:3223 200:2896 202:3670
203:5100 204:3075 205:2020 206:2405 207:2419 208:2677
209:2797 210:739 211:327 212:974 213:768 214:21
215:21 216:3235 217:605 218:83 219:9 220:52
End of report
1
0
This report has been generated at Fri Mar 7 21:46:45 2003 AEST.
The report analyses the BGP Routing Table of an AS4637 (Reach) router
and generates a report on aggregation potential within the table.
Check http://www.cidr-report.org/as4637 for a current version of this report.
Recent Table History
Date Prefixes CIDR Agg
28-02-03 119708 85685
01-03-03 119794 85736
02-03-03 119902 85774
03-03-03 119905 85881
04-03-03 120066 86042
05-03-03 120121 86071
06-03-03 120244 86209
07-03-03 120289 86173
AS Summary
14703 Number of ASes in routing system
5787 Number of ASes announcing only one prefix
1586 Largest number of prefixes announced by an AS
AS701 : ALTERNET-AS UUNET Technologies, Inc.
72916992 Largest address span announced by an AS (/32s)
AS568 : SUMNET-AS DISO-UNRRA
Aggregation Summary
The algorithm used in this report proposes aggregation only
when there is a precise match using the AS path, so as
to preserve traffic transit policies. Aggregation is also
proposed across non-advertised address space ('holes').
--- 07Mar03 ---
ASnum NetsNow NetsAggr NetGain % Gain Description
Table 120335 86155 34180 28.4% All ASes
AS3908 1085 567 518 47.7% SUPERNETASBLK SuperNet, Inc.
AS18566 507 9 498 98.2% COVAD Covad Communications
AS701 1586 1146 440 27.7% ALTERNET-AS UUNET
Technologies, Inc.
AS4151 532 106 426 80.1% USDA-1 USDA
AS4323 537 170 367 68.3% TW-COMM Time Warner
Communications, Inc.
AS7843 590 232 358 60.7% ADELPHIA-AS Adelphia Corp.
AS7018 1380 1024 356 25.8% ATT-INTERNET4 AT&T WorldNet
Services
AS6197 498 157 341 68.5% BATI-ATL BellSouth Network
Solutions, Inc
AS1221 1113 809 304 27.3% ASN-TELSTRA Telstra Pty Ltd
AS1239 973 691 282 29.0% SPRINTLINK Sprint
AS4355 401 120 281 70.1% ERMS-EARTHLNK EARTHLINK, INC
AS22927 295 14 281 95.3% AR-TEAR2-LACNIC TELEFONICA DE
ARGENTINA
AS705 450 196 254 56.4% ASN-ALTERNET UUNET
Technologies, Inc.
AS4814 263 15 248 94.3% CHINANET-BEIJING-AP China
Telecom (Group)
AS6198 450 203 247 54.9% BATI-MIA BellSouth Network
Solutions, Inc
AS1 662 436 226 34.1% GNTY-1 Genuity
AS22291 243 31 212 87.2% CHARTER-LA Charter
Communications
AS27364 240 29 211 87.9% ACS-INTERNET Armstrong Cable
Services
AS17676 230 26 204 88.7% GIGAINFRA XTAGE CORPORATION
AS2386 483 282 201 41.6% INS-AS AT&T Data
Communications Services
AS4134 304 113 191 62.8% CHINANET-BACKBONE
No.31,Jin-rong Street
AS209 532 342 190 35.7% ASN-QWEST Qwest
AS690 500 310 190 38.0% MERIT-AS-27 Merit Network Inc.
AS6347 370 190 180 48.6% DIAMOND SAVVIS Communications
Corporation
AS2048 259 87 172 66.4% LANET-1 State of Louisiana
AS17557 359 206 153 42.6% PKTELECOM-AS-AP Pakistan
Telecom
AS7303 240 90 150 62.5% AR-TAST-LACNIC Telecom
Argentina Stet-France Telecom
S.A.
AS22773 182 32 150 82.4% CCINET-2 Cox Communications
Inc. Atlanta
AS6140 284 136 148 52.1% IMPSAT-USA ImpSat
AS11492 322 174 148 46.0% CABLEONE CABLE ONE
Total 15870 7943 7927 49.9% Top 30 total
Please see http://www.cidr-report.org for the full report
------------------------------------
Copies of this report are mailed to:
nanog(a)merit.edu
eof-list(a)ripe.net
apops(a)apops.net
routing-wg(a)ripe.net
afnog(a)afnog.org
1
0
This is an automated weekly mailing describing the state of the Internet
Routing Table as seen from APNIC's router in Japan.
Daily listings are sent to bgp-stats(a)lists.apnic.net
For a graphical representation, please see http://www.apnic.net/stats/bgp.
If you have any comments please contact Philip Smith <pfs(a)cisco.com>.
Routing Table Report 20:00 +10GMT Fri 07 Mar, 2003
Analysis Summary
----------------
BGP routing table entries examined: 122334
Prefixes after maximum aggregation: 77814
Unique aggregates announced to Internet: 58981
Total ASes present in the Internet Routing Table: 14766
Origin-only ASes present in the Internet Routing Table: 12811
Origin ASes announcing only one prefix: 5791
Transit ASes present in the Internet Routing Table: 1955
Transit-only ASes present in the Internet Routing Table: 66
Average AS path length visible in the Internet Routing Table: 5.4
Max AS path length visible: 17
Illegal AS announcements present in the Routing Table: 11
Non-routable prefixes present in the Routing Table: 0
Prefixes being announced from the IANA Reserved Address blocks: 17
Number of addresses announced to Internet: 1199996293
Equivalent to 71 /8s, 134 /16s and 125 /24s
Percentage of available address space announced: 32.4
Percentage of allocated address space announced: 58.3
Percentage of available address space allocated: 55.5
Total number of prefixes smaller than registry allocations: 57285
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 20595
Total APNIC prefixes after maximum aggregation: 12127
Prefixes being announced from the APNIC address blocks: 19075
Unique aggregates announced from the APNIC address blocks: 11688
APNIC Region origin ASes present in the Internet Routing Table: 1747
APNIC Region origin ASes announcing only one prefix: 523
APNIC Region transit ASes present in the Internet Routing Table: 293
Average APNIC Region AS path length visible: 5.4
Max APNIC Region AS path length visible: 16
Number of APNIC addresses announced to Internet: 106802592
Equivalent to 6 /8s, 93 /16s and 173 /24s
Percentage of available APNIC address space announced: 56.6
APNIC AS Blocks 4608 - 4864, 7467 - 7722, 9216 - 10239
17408 - 18431, 23552 - 24575
APNIC Address Blocks 61/8, 202/7, 210/7, 218/7 and 220/6
ARIN Region Analysis Summary
----------------------------
Prefixes being announced by ARIN Region ASes: 75239
Total ARIN prefixes after maximum aggregation: 47925
Prefixes being announced from the ARIN address blocks: 53478
Unique aggregates announced from the ARIN address blocks: 16726
ARIN Region origin ASes present in the Internet Routing Table: 8213
ARIN Region origin ASes announcing only one prefix: 2776
ARIN Region transit ASes present in the Internet Routing Table: 782
Average ARIN Region AS path length visible: 5.3
Max ARIN Region AS path length visible: 17
Number of ARIN addresses announced to Internet: 187715776
Equivalent to 11 /8s, 48 /16s and 80 /24s
Percentage of available ARIN address space announced: 69.9
ARIN AS Blocks 1 - 1876, 1902 - 2042, 2044 - 2046, 2048 - 2106
2138 - 2584, 2615 - 2772, 2823 - 2829, 2880 - 3153
3354 - 4607, 4865 - 5119, 5632 - 6655, 6912 - 7466
7723 - 8191, 10240 - 12287, 13312 - 15359
16384 - 17407, 18432 - 20479, 21504 - 23551
25600 - 26591, 26624 - 27647
ARIN Address Blocks 24/8, 63/8, 64/6, 68/7, 199/8, 204/6, 208/7
and 216/8
RIPE Region Analysis Summary
----------------------------
Prefixes being announced by RIPE Region ASes: 21209
Total RIPE prefixes after maximum aggregation: 15553
Prefixes being announced from the RIPE address blocks: 17705
Unique aggregates announced from the RIPE address blocks: 11827
RIPE Region origin ASes present in the Internet Routing Table: 4412
RIPE Region origin ASes announcing only one prefix: 2407
RIPE Region transit ASes present in the Internet Routing Table: 803
Average RIPE Region AS path length visible: 5.9
Max RIPE Region AS path length visible: 17
Number of RIPE addresses announced to Internet: 127701760
Equivalent to 7 /8s, 156 /16s and 147 /24s
Percentage of available RIPE address space announced: 76.1
RIPE AS Blocks 1877 - 1901, 2043, 2047, 2107 - 2136, 2585 - 2614
2773 - 2822, 2830 - 2879, 3154 - 3353, 5377 - 5631
6656 - 6911, 8192 - 9215, 12288 - 13311, 15360 - 16383
20480 - 21503, 24576 - 25599, 28672 - 29695
RIPE Address Blocks 62/8, 80/7, 82/8, 188/8, 193/8, 194/7,
212/7 and 217/8
LACNIC Region Analysis Summary
------------------------------
Prefixes being announced by LACNIC Region ASes: 5281
Total LACNIC prefixes after maximum aggregation: 2209
Prefixes being announced from the LACNIC address blocks: 4661
Unique aggregates announced from the LACNIC address blocks: 3034
LACNIC Region origin ASes present in the Internet Routing Table: 330
LACNIC Region origin ASes announcing only one prefix: 85
LACNIC Region transit ASes present in the Internet Routing Table: 67
Average LACNIC Region AS path length visible: 5.8
Max LACNIC Region AS path length visible: 15
Number of LACNIC addresses announced to Internet: 12217856
Equivalent to 0 /8s, 186 /16s and 110 /24s
Percentage of available LACNIC address space announced: 72.8
LACNIC AS Blocks 26592 - 26623, 27648 - 28671
LACNIC Address Blocks 200/8
APNIC Region per AS prefix count summary
----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
1221 1108 1119 804 Telstra Pty Ltd
703 402 369 313 UUNET
2907 387 1960 366 SINET Japan
17557 359 26 133 Pakistan Telecom
2764 326 341 293 connect.com.au pty ltd
4134 304 2637 96 Data Communications Bureau
7474 303 275 206 Optus Communications Pty Ltd
4814 263 79 15 China Telecom (Group)
3786 242 773 207 DACOM Corporation
4755 234 133 73 Videsh Sanchar Nigam Ltd. Aut
17676 232 3574 24 XTAGE CORPORATION
9583 217 33 13 Satyam Infoway Ltd.,
4766 208 2074 155 Korea Internet Exchange for "
9443 178 57 76 Primus Telecommunications
9800 166 205 41 CHINA UNICOM
4765 152 10 14 World Net & Services Co., Ltd
9238 138 8 17 TATA ISP
4739 128 57 116 Commerical Internet eXchange
4716 127 733 121 TTnet
9768 125 384 64 Korea Telecom
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
701 1598 8874 1148 UUNET Technologies, Inc.
7018 1382 7166 957 AT&T
3908 1247 1590 485 Supernet, Inc.
1239 979 3153 692 Sprint
1 670 8088 438 GENUITY
7843 593 408 207 Adelphia Corp.
852 576 1107 443 Telus Advanced Communications
4323 538 473 169 Time Warner Communications, I
209 534 2092 341 Qwest
4151 532 691 59 USDA
690 508 74 317 Merit Network
18566 507 116 9 Covad Communications
3561 498 2304 344 Cable & Wireless USA
6197 498 555 114 BellSouth Network Solutions,
7066 484 204 254 Virginia Polytechnic Institut
2386 483 479 244 AT&T Data Communications Serv
705 450 165 196 UUNET Technologies, Inc.
6198 448 196 199 BellSouth Network Solutions,
3549 401 694 307 Global Crossing
4355 401 308 112 EarthLink, Inc.
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 789 2233 652 UUNET - Commercial IP service
3301 315 1142 303 TeliaNet Sweden
3215 314 818 172 France Telecom Transpac
3320 265 1996 228 Deutsche Telekom AG
680 232 2054 229 DFN-IP service G-WiN
1257 219 370 196 SWIPnet Swedish IP Network
719 203 307 127 LANLINK autonomous system
5400 198 70 98 BT Ignite European Backbone
5515 186 779 160 Sonera Solution Autonomous Sy
786 179 1874 179 The JANET IP Service
8708 153 42 150 Romania Data Systems S.A.
20858 148 17 3 This AS will be used to conne
3303 145 517 144 Swisscom Ltd
8220 126 182 117 COLT Internet - International
12302 122 17 29 MobiFon S.A.
2856 117 1298 107 BTnet UK Regional network
3269 111 751 61 TELECOM ITALIA
3233 106 10 19 RNC - Romanian Natioanal R&D
3246 105 360 102 Song Networks
5511 104 175 80 France Telecom
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
6140 284 98 104 ImpSat
7303 240 36 49 Telecom Argentina Stet-France
8151 214 341 116 UniNet S.A. de C.V.
11172 161 66 33 Servicios Alestra S.A de C.V
6503 157 191 110 AVANTEL, S.A.
16814 139 9 18 NSS, S.A.
13999 127 36 8 Mega Cable S.A. de C.V.
11340 110 3 38 Red Universitaria Nacional
10620 107 7 31 TVCABLE BOGOTA
6147 74 62 20 Telefonica Del Peru
1916 73 306 44 Fundacao de Amparo a Pesquisa
6535 72 5 23 Chilesat Servicios Empresari
8065 72 6 21 Empresas Publicas de Medellin
11992 71 7 32 Integrated Systems
15311 71 27 36 Telefonica Empresas
4270 69 18 10 Red de Interconexion Universi
7984 66 11 42 Global One Colombia
7080 64 4 1 Electronica y Comunicaciones
7927 64 5 39 Global One Venezuela
11830 61 4 20 Instituto Costarricense de El
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
3908 1247 762 Supernet, Inc.
18566 507 498 Covad Communications
4151 532 473 USDA
7018 1382 425 AT&T
7843 593 386 Adelphia Corp.
6197 498 384 BellSouth Network Solutions,
4323 538 369 Time Warner Communications, I
11492 322 319 Cable One
1221 1108 304 Telstra Pty Ltd
6347 371 292 SAVVIS Communications Corpora
4355 401 289 EarthLink, Inc.
1239 979 287 Sprint
22927 295 281 TELEFONICA DE ARGENTINA
705 450 254 UUNET Technologies, Inc.
6198 448 249 BellSouth Network Solutions,
4814 263 248 China Telecom (Group)
2386 483 239 AT&T Data Communications Serv
1 670 232 GENUITY
7066 484 230 Virginia Polytechnic Institut
17557 359 226 Pakistan Telecom
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
1877 UNALLOCATED 192.108.199.0/24 1880 Stupi, house man's p
64521 PRIVATE 198.189.23.0/24 2151 California State Uni
64521 PRIVATE 198.189.24.0/24 2151 California State Uni
64524 PRIVATE 198.189.134.0/24 2151 California State Uni
64524 PRIVATE 198.189.135.0/24 2151 California State Uni
64524 PRIVATE 198.189.136.0/24 2151 California State Uni
64524 PRIVATE 198.189.137.0/24 2151 California State Uni
64524 PRIVATE 198.189.138.0/24 2151 California State Uni
64521 PRIVATE 198.189.158.0/24 2151 California State Uni
64521 PRIVATE 198.189.235.0/24 2151 California State Uni
64521 PRIVATE 198.189.236.0/24 2151 California State Uni
Advertised Unregistered Addresses
---------------------------------
Network Origin AS Description
39.0.0.0/8 4554 Exchange Point Blocks
132.0.0.0/10 568 DISO-UNRRA
135.0.0.0/13 10455 Lucent Technologies
137.0.0.0/13 568 DISO-UNRRA
158.0.0.0/13 568 DISO-UNRRA
192.44.0.0/19 702 UUNET - Commercial IP service
192.83.16.0/20 5515 Sonera Solution Autonomous Sy
192.83.32.0/19 5515 Sonera Solution Autonomous Sy
192.83.96.0/22 5515 Sonera Solution Autonomous Sy
192.83.100.0/24 5515 Sonera Solution Autonomous Sy
192.119.135.0/24 270 NASA
192.135.50.0/24 7018 AT&T
192.136.79.0/24 719 LANLINK autonomous system
192.153.136.0/21 568 DISO-UNRRA
192.156.164.0/24 19548 Adelphia Business Solutions
192.172.0.0/19 568 DISO-UNRRA
192.243.36.0/23 2044 AUSNet, Inc.
Number of prefixes announced per prefix length (Global)
-------------------------------------------------------
/1:0 /2:0 /3:0 /4:0 /5:0 /6:0
/7:0 /8:17 /9:3 /10:8 /11:13 /12:46
/13:89 /14:240 /15:445 /16:7347 /17:1605 /18:2906
/19:8197 /20:8120 /21:5828 /22:8841 /23:10593 /24:67303
/25:166 /26:188 /27:104 /28:80 /29:59 /30:72
/31:4 /32:60
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
3908 818 1247 Supernet, Inc.
18566 502 507 Covad Communications
702 494 789 UUNET - Commercial IP service
7018 485 1382 AT&T
701 465 1598 UUNET Technologies, Inc.
690 457 508 Merit Network
7066 383 484 Virginia Polytechnic Institut
6197 366 498 BellSouth Network Solutions,
1239 365 979 Sprint
6198 358 448 BellSouth Network Solutions,
7843 355 593 Adelphia Corp.
11492 321 322 Cable One
22927 294 295 TELEFONICA DE ARGENTINA
2386 283 483 AT&T Data Communications Serv
6140 271 284 ImpSat
20115 269 397 Charter Communications
3215 239 314 France Telecom Transpac
7303 239 240 Telecom Argentina Stet-France
27364 232 240 Armstrong Cable Services
4355 229 401 EarthLink, Inc.
Number of /24s announced per /8 block (Global)
----------------------------------------------
12:658 13:1 15:4 17:2 20:9 24:879
25:1 32:90 34:1 38:60 40:18 44:2
55:1 57:15 61:452 62:509 63:1929 64:1390
65:1898 66:1471 67:214 68:296 69:54 80:330
81:97 128:148 129:223 130:40 131:82 132:11
133:11 134:146 135:4 136:114 137:117 138:101
139:74 140:138 141:123 142:94 143:47 144:89
145:18 146:264 147:86 148:272 149:73 150:43
151:110 152:258 153:51 154:2 155:107 156:42
157:41 158:124 159:140 160:34 161:60 162:136
163:86 164:297 165:142 166:80 167:321 168:393
169:54 170:312 171:8 192:5287 193:2392 194:2009
195:958 196:473 198:3597 199:3213 200:2888 202:3643
203:5092 204:3040 205:2029 206:2414 207:2427 208:2703
209:2802 210:738 211:334 212:969 213:756 214:21
215:21 216:3256 217:598 218:80 219:14 220:52
End of report
1
0
GEANT implementing "BGP Guard Time" on their Junipers (was: Route update stats)
by Christian Panigl, ACOnet/VIX/UniVie 06 Mar '03
by Christian Panigl, ACOnet/VIX/UniVie 06 Mar '03
06 Mar '03
Dear all,
remembering the thread on "Route update stats" in December ?
Specifically:
http://www.ripe.net/ripe/mail-archives/routing-wg/2002/msg00050.html
Now Christophe Belmont, GEANT-NOC, together with Juniper found a
solution and we successfully tested it:
They implemented "BGP Guard Time" (Cisco like 30 seconds) and the
result was impressive:
The number of BGP update messages received from GEANT dropped by ~85%
and the number of "flaps" seen from GEANT by ~75% !
BGP guard time (30sec) means that updates are only sent to neighbors for
prefixes which have stayed in the routing table for 30 seconds. I'm
sure you know the specific problem, that when a prefix is withdrawn in a
meshed environment, lots of updates are sent from BGP entities which do
think that they still have a (longer) path. It may take quite some time
until all these false updates are dying down. Without this guard time a
BGP speaker immediately forwards all those false updates to all peers.
I guess that if you would globally disable BGP guard time (which
fortunately is default ON=30seconds for Ciscos but apparently not for
Junipers) quite some routers would collapse on these withdrawal
aftermaths.
So my suggestion would be for all ISPs using Juniper routers: turn on
"BGP Guard Time" (Cisco like 30 seconds).
Christophe, probably you can post the details to the list !?
Kind regards
CP
--- ---------------------------------------------------------------------- ---
--- Christian Panigl : Vienna University Computer Center - ACOnet ---
--- VUCC - ACOnet - VIX : -------------------------------------------- ---
--- Universitaetsstrasse 7 : Mail: Panigl(a)CC.UniVie.ac.at (CP8-RIPE) ---
--- A-1010 Vienna / Austria : Tel: +43 1 4277-14032 (Fax: -9140) ---
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