- routing-wg - mailman.ripe.net

The Cidr Report
by CIDR Report 06 Apr '02

06 Apr '02

This is an auto-generated mail on Fri Apr 5 23:00:00 PST 2002 It is not checked before it leaves my workstation. However, hopefully you will find this report interesting and will take the time to look through this to see if you can improve the amount of aggregation you perform. Check http://www.employees.org/~tbates/cidr-report.html for a daily update of this report. NEW: Check http://www.employees.org/~tbates/cidr-report-region.html for the regional version of this report. NEW: Check http://www.employees.org/~tbates/autnums.html for a complete list of autonomous system number to name mappings as used by the CIDR-Report. The report is split into sections: 0) General Status List the route table history for the last week, list any possibly bogus routes seen and give some status on ASes. 1) Gains by aggregating at the origin AS level This lists the "Top 30" players who if they decided to aggregate their announced classful prefixes at the origin AS level could make a significant difference in the reduction of the current size of the Internet routing table. This calculation does not take into account the inclusion of holes when forming an aggregate so it is possible even larger reduction should be possible. 2) Weekly Delta A summary of the last weeks changes in terms of withdrawn and added routes. Please note that this is only a snapshot but does give some indication of ASes participating in CIDR. Clearly, it is generally a good thing to see a large amont of withdrawls. 3) Interesting aggregates Interesting here means not an aggregate made as a set of classful routes. Thanks to GX Networks for giving me access to their routing tables once a day. Please send any comments about this report directly to CIDR Report <cidr-report(a)cisco.com>. ------------------------------------------------------------------------------ CIDR REPORT for 05Apr02 0) General Status Table History ------------- Date Prefixes 290302 108300 300302 108315 310302 108324 010402 108317 020402 108544 030402 108663 040402 108562 050402 108885 Check http://www.employees.org/~tbates/cidr.plot.html for a plot of the table history. Possible Bogus Routes --------------------- *** Bogus 10.1.1.1/32 from AS(65301) *** Bogus 96.0.0.0/20 from AS3549 AS Summary ---------- 1) Gains by aggregating at the origin AS level --- 05Apr02 --- For the rest of the previous weeks gain information please see http://www.employees.org:80/~tbates/cidr-report.html 2) Weekly Delta Please see http://www.employees.org:80/~tbates/cidr-report.html for this part of the report 3) Interesting aggregates Please see http://www.employees.org:80/~tbates/cidr-report.html for this part of the report

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Weekly Routing Table Report
by Routing Table Analysis 05 Apr '02

05 Apr '02

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 05 Apr, 2002 Analysis Summary ---------------- BGP routing table entries examined: 111183 Prefixes after maximum aggregation: 72523 Unique aggregates announced to Internet: 53862 Total ASes present in the Internet Routing Table: 12853 Origin-only ASes present in the Internet Routing Table: 11134 Origin ASes announcing only one prefix: 4883 Transit ASes present in the Internet Routing Table: 1719 Transit-only ASes present in the Internet Routing Table: 55 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: 32 Non-routable prefixes present in the Routing Table: 0 Prefixes being announced from the IANA Reserved Address blocks: 14 Number of addresses announced to Internet: 1163534440 Equivalent to 69 /8s, 90 /16s and 32 /24s Percentage of available address space announced: 31.4 Percentage of allocated address space announced: 59.4 Percentage of available address space allocated: 52.8 Total number of prefixes smaller than registry allocations: 74810 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 18347 Total APNIC prefixes after maximum aggregation: 10814 Prefixes being announced from the APNIC address blocks: 16820 Unique aggregates announced from the APNIC address blocks: 10202 APNIC Region origin ASes present in the Internet Routing Table: 1475 APNIC Region origin ASes announcing only one prefix: 481 APNIC Region transit ASes present in the Internet Routing Table: 262 Average APNIC Region AS path length visible: 5.3 Max APNIC Region AS path length visible: 15 Number of APNIC addresses announced to Internet: 82542400 Equivalent to 4 /8s, 235 /16s and 127 /24s Percentage of available APNIC address space announced: 61.0 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 220/8 ARIN Region Analysis Summary ---------------------------- Prefixes being announced by ARIN Region ASes: 74236 Total ARIN prefixes after maximum aggregation: 47491 Prefixes being announced from the ARIN address blocks: 52525 Unique aggregates announced from the ARIN address blocks: 17615 ARIN Region origin ASes present in the Internet Routing Table: 7609 ARIN Region origin ASes announcing only one prefix: 2399 ARIN Region transit ASes present in the Internet Routing Table: 764 Average ARIN Region AS path length visible: 5.2 Max ARIN Region AS path length visible: 16 Number of ARIN addresses announced to Internet: 183919940 Equivalent to 10 /8s, 246 /16s and 101 /24s Percentage of available ARIN address space announced: 68.5 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 ARIN Address Blocks 24/8, 63/8, 64/6, 68/8, 199/8, 200/8, 204/6, 208/7 and 216/8 RIPE Region Analysis Summary ---------------------------- Prefixes being announced by RIPE Region ASes: 18595 Total RIPE prefixes after maximum aggregation: 14218 Prefixes being announced from the RIPE address blocks: 15313 Unique aggregates announced from the RIPE address blocks: 10167 RIPE Region origin ASes present in the Internet Routing Table: 3713 RIPE Region origin ASes announcing only one prefix: 2003 RIPE Region transit ASes present in the Internet Routing Table: 679 Average RIPE Region AS path length visible: 5.8 Max RIPE Region AS path length visible: 17 Number of RIPE addresses announced to Internet: 108544800 Equivalent to 6 /8s, 120 /16s and 67 /24s Percentage of available RIPE address space announced: 71.9 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 RIPE Address Blocks 62/8, 80/7, 193/8, 194/7, 212/7 and 217/8 APNIC Region per AS prefix count summary ---------------------------------------- ASN No of nets /20 equiv MaxAgg Description 1221 1289 1211 946 Telstra Pty Ltd 4538 470 1194 17 China Education and Research 2907 437 1927 371 SINET Japan 703 420 338 326 UUNET Technologies, Inc. 2764 387 361 361 connect.com.au pty ltd 9394 338 113 4 CHINA RAILWAY Internet(CRNET) 7474 312 290 211 Optus Communications Pty Ltd 4755 280 109 78 Videsh Sanchar Nigam Ltd. Aut 9443 276 44 64 Primus Telecommunications 4134 273 1986 93 Data Communications Bureau 17557 255 17 100 Pakistan Telecom 4766 220 1520 158 Korea Internet Exchange for " 7539 170 256 163 TANet2, sponsored by NSC, TAI 4804 160 84 67 Microplex PTY LTD 9583 149 32 5 Satyam Infoway Ltd., 9768 139 385 79 Korea Telecom 7657 122 22 85 The Internet Group Limited 4713 119 898 104 NTT Communications Corporatio 17676 119 1904 12 XTAGE CORPORATION 4780 114 186 39 Digital United Inc. RIPE Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 702 1028 2577 843 UUNET Technologies, Inc. 3301 388 923 343 TeliaNet Sweden 3215 269 582 174 France Telecom / &Equant 5515 266 760 171 Sonera Finland Autonomous Sys 680 232 2149 231 DFN-IP service G-WiN 3320 227 1964 175 Deutsche Telekom AG 1257 215 463 212 SWIPnet Swedish IP Network 5400 196 83 93 Concert European Core Network 786 182 1874 182 The JANET IP Service 719 163 289 118 LANLINK autonomous system 8708 158 23 148 Romania Data Systems S.A. 2856 128 786 117 BTnet UK Regional network 12302 127 8 47 MobiFon S.A. 3303 123 564 122 Swisscom Ltd 8297 121 53 66 Teleglobe Autonomous System i 3269 117 694 71 TELECOM ITALIA 5536 107 11 27 Internet Egypt Network 5511 103 193 91 France Telecom 517 101 226 97 KPNQwest Germany GmbH 9051 101 6 25 INCONET Autonomous System ARIN Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 701 2077 8538 1456 UUNET Technologies, Inc. 7018 1230 7512 920 AT&T 3908 849 1676 479 Supernet, Inc. 1239 822 3390 645 Sprint 1 804 8138 605 BBN Planet 4323 628 436 253 Time Warner Communications, I 852 625 1111 412 Telus Advanced Communications 7046 601 837 370 UUNET Technologies, Inc. 209 562 1997 321 Qwest 705 541 152 279 UUNET Technologies, Inc. 7132 525 555 162 Southwestern Bell Internet Se 3549 519 861 269 Global Crossing 690 455 68 300 Merit Network 7843 430 314 50 Adelphia Corp. 2914 413 2162 409 Verio, Inc. 7066 362 203 250 Virginia Polytechnic Institut 2149 355 207 296 Performance Systems, Inc. 3741 342 731 235 The Internet Solution 6197 332 217 173 BellSouth Network Solutions, 3561 317 2152 285 Cable & Wireless USA Global Per AS Maximum Aggr summary ---------------------------------- ASN No of nets Net Savings Description 4538 470 453 China Education and Research 7843 430 380 Adelphia Corp. 4323 628 375 Time Warner Communications, I 3908 849 370 Supernet, Inc. 7132 525 363 Southwestern Bell Internet Se 1221 1289 343 Telstra Pty Ltd 9394 338 334 CHINA RAILWAY Internet(CRNET) 7018 1230 310 AT&T 4151 307 291 USDA 11371 294 288 Rhythms NetConnections 6198 311 280 BellSouth Network Solutions, 4565 311 277 Epoch Networks 705 541 262 UUNET Technologies, Inc. 3549 519 250 Global Crossing 209 562 241 Qwest 6347 317 238 SAVVIS Communications Corpora 7046 601 231 UUNET Technologies, Inc. 7029 243 228 Alltel Information Services, 4355 250 214 EarthLink, Inc. 852 625 213 Telus Advanced Communications List of Unregistered ASNs (Global) ---------------------------------- Bad AS Designation Network Transit AS Description 23522 UNALLOCATED 63.144.122.0/24 209 Qwest 23522 UNALLOCATED 63.145.151.0/24 209 Qwest 23522 UNALLOCATED 63.147.197.0/24 209 Qwest 23522 UNALLOCATED 63.149.31.0/24 209 Qwest 23522 UNALLOCATED 63.149.35.0/24 209 Qwest 23522 UNALLOCATED 63.151.165.0/24 209 Qwest 23522 UNALLOCATED 63.151.166.0/24 209 Qwest 23522 UNALLOCATED 63.151.206.0/24 209 Qwest 23279 UNALLOCATED 63.238.4.0/24 209 Qwest 23522 UNALLOCATED 63.239.198.0/24 209 Qwest 23522 UNALLOCATED 65.116.88.0/24 209 Qwest 23522 UNALLOCATED 65.116.89.0/24 209 Qwest 23522 UNALLOCATED 65.116.90.0/24 209 Qwest 23522 UNALLOCATED 65.116.91.0/24 209 Qwest 23522 UNALLOCATED 65.116.92.0/24 209 Qwest 23522 UNALLOCATED 65.116.93.0/24 209 Qwest 23522 UNALLOCATED 65.116.94.0/24 209 Qwest 23522 UNALLOCATED 65.116.95.0/24 209 Qwest 23522 UNALLOCATED 65.117.175.0/24 209 Qwest 23522 UNALLOCATED 66.252.0.0/20 209 Qwest 23522 UNALLOCATED 66.252.15.0/24 209 Qwest 65005 PRIVATE 152.70.0.0/16 90 Sun Microsystems, In 112 UNALLOCATED 192.175.48.0/24 3557 Vixie Enterprises 65535 PRIVATE 198.93.230.0/24 3550 Ateneo de Manila Uni 65535 PRIVATE 198.93.231.0/24 3550 Ateneo de Manila Uni 65535 PRIVATE 198.94.168.0/24 3550 Ateneo de Manila Uni 65535 PRIVATE 198.94.169.0/24 3550 Ateneo de Manila Uni 5757 UNALLOCATED 207.19.224.0/24 701 UUNET Technologies, 23522 UNALLOCATED 216.111.191.0/24 209 Qwest 23522 UNALLOCATED 216.111.239.0/24 209 Qwest 23279 UNALLOCATED 216.207.52.0/24 209 Qwest 23279 UNALLOCATED 216.207.53.0/24 209 Qwest Advertised Unregistered Addresses --------------------------------- Network Origin AS Description 39.0.0.0/8 4554 Exchange Point Blocks 96.0.0.0/20 3549 Global Crossing 132.0.0.0/10 568 DISO-UNRRA 134.137.0.0/16 7170 AT&T Government Markets 135.0.0.0/13 10455 Lucent Technologies 137.0.0.0/13 568 DISO-UNRRA 138.94.0.0/16 1 BBN Planet 144.7.0.0/16 701 UUNET Technologies, Inc. 153.36.0.0/14 701 UUNET Technologies, Inc. 153.147.0.0/16 3561 Cable & Wireless USA 154.150.0.0/16 6494 IDCI 158.0.0.0/13 568 DISO-UNRRA 164.233.0.0/16 6020 DISA NETWORK SERVICES 164.235.0.0/16 6025 US DOD NIC Unregistered Number of prefixes announced per prefix length (Global) ------------------------------------------------------- /1:0 /2:0 /3:0 /4:0 /5:0 /6:0 /7:0 /8:18 /9:5 /10:8 /11:14 /12:35 /13:88 /14:233 /15:401 /16:7207 /17:1404 /18:2564 /19:7425 /20:6889 /21:4964 /22:7624 /23:9188 /24:62083 /25:227 /26:288 /27:119 /28:116 /29:122 /30:125 /31:0 /32:36 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 701 1333 2077 UUNET Technologies, Inc. 1221 1148 1289 Telstra Pty Ltd 702 656 1028 UUNET Technologies, Inc. 7018 645 1230 AT&T 3908 580 849 Supernet, Inc. 4323 496 628 Time Warner Communications, I 705 474 541 UUNET Technologies, Inc. 1239 474 822 Sprint 690 447 455 Merit Network 7046 414 601 UUNET Technologies, Inc. 1 397 804 BBN Planet 852 381 625 Telus Advanced Communications 3549 377 519 Global Crossing 209 370 562 Qwest 2764 342 387 connect.com.au pty ltd 703 337 420 UUNET Technologies, Inc. 7066 333 362 Virginia Polytechnic Institut 9394 324 338 CHINA RAILWAY Internet(CRNET) 11371 288 294 Rhythms NetConnections 4565 286 311 Epoch Networks Number of /24s announced per /8 block (Global) ---------------------------------------------- 3:1 9:1 12:492 13:10 15:2 17:6 20:2 24:774 25:1 32:68 38:8 40:6 44:1 57:14 61:305 62:180 63:1910 64:1195 65:1135 66:805 67:205 68:5 80:228 81:10 128:64 129:131 130:22 131:57 132:12 133:3 134:129 135:10 136:288 137:103 138:137 139:49 140:187 141:114 142:82 143:38 144:137 145:13 146:220 147:137 148:160 149:92 150:40 151:45 152:308 153:33 154:1 155:105 156:76 157:122 158:72 159:124 160:42 161:56 162:141 163:104 164:158 165:126 166:219 167:187 168:100 169:52 170:289 171:2 192:5456 193:2266 194:2095 195:807 196:430 198:3737 199:3222 200:2387 202:3153 203:4574 204:3241 205:2179 206:2620 207:2671 208:2568 209:2821 210:583 211:204 212:883 213:617 214:9 215:18 216:3114 217:462 218:15 End of report

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Weekly Routing Table Report
by Routing Table Analysis 31 Mar '02

31 Mar '02

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 29 Mar, 2002 Analysis Summary ---------------- BGP routing table entries examined: 110532 Prefixes after maximum aggregation: 72321 Unique aggregates announced to Internet: 53586 Total ASes present in the Internet Routing Table: 12821 Origin-only ASes present in the Internet Routing Table: 11097 Origin ASes announcing only one prefix: 4863 Transit ASes present in the Internet Routing Table: 1724 Transit-only ASes present in the Internet Routing Table: 54 Average AS path length visible in the Internet Routing Table: 5.3 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: 14 Number of addresses announced to Internet: 1163171560 Equivalent to 69 /8s, 84 /16s and 150 /24s Percentage of available address space announced: 31.4 Percentage of allocated address space announced: 59.4 Percentage of available address space allocated: 52.8 Total number of prefixes smaller than registry allocations: 74196 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 18278 Total APNIC prefixes after maximum aggregation: 10781 Prefixes being announced from the APNIC address blocks: 16756 Unique aggregates announced from the APNIC address blocks: 10127 APNIC Region origin ASes present in the Internet Routing Table: 1471 APNIC Region origin ASes announcing only one prefix: 477 APNIC Region transit ASes present in the Internet Routing Table: 262 Average APNIC Region AS path length visible: 5.3 Max APNIC Region AS path length visible: 15 Number of APNIC addresses announced to Internet: 82277440 Equivalent to 4 /8s, 231 /16s and 116 /24s Percentage of available APNIC address space announced: 60.8 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 220/8 ARIN Region Analysis Summary ---------------------------- Prefixes being announced by ARIN Region ASes: 73730 Total ARIN prefixes after maximum aggregation: 47319 Prefixes being announced from the ARIN address blocks: 52165 Unique aggregates announced from the ARIN address blocks: 17506 ARIN Region origin ASes present in the Internet Routing Table: 7584 ARIN Region origin ASes announcing only one prefix: 2390 ARIN Region transit ASes present in the Internet Routing Table: 769 Average ARIN Region AS path length visible: 5.2 Max ARIN Region AS path length visible: 16 Number of ARIN addresses announced to Internet: 184069572 Equivalent to 10 /8s, 248 /16s and 173 /24s Percentage of available ARIN address space announced: 68.6 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 ARIN Address Blocks 24/8, 63/8, 64/6, 68/8, 199/8, 200/8, 204/6, 208/7 and 216/8 RIPE Region Analysis Summary ---------------------------- Prefixes being announced by RIPE Region ASes: 18518 Total RIPE prefixes after maximum aggregation: 14221 Prefixes being announced from the RIPE address blocks: 15231 Unique aggregates announced from the RIPE address blocks: 10125 RIPE Region origin ASes present in the Internet Routing Table: 3711 RIPE Region origin ASes announcing only one prefix: 1996 RIPE Region transit ASes present in the Internet Routing Table: 677 Average RIPE Region AS path length visible: 5.8 Max RIPE Region AS path length visible: 17 Number of RIPE addresses announced to Internet: 108317472 Equivalent to 6 /8s, 116 /16s and 203 /24s Percentage of available RIPE address space announced: 71.7 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 RIPE Address Blocks 62/8, 80/7, 193/8, 194/7, 212/7 and 217/8 APNIC Region per AS prefix count summary ---------------------------------------- ASN No of nets /20 equiv MaxAgg Description 1221 1284 1211 944 Telstra Pty Ltd 4538 464 1194 17 China Education and Research 2907 437 1895 371 SINET Japan 703 416 336 324 UUNET Technologies, Inc. 2764 385 361 360 connect.com.au pty ltd 9394 331 113 4 CHINA RAILWAY Internet(CRNET) 7474 312 290 211 Optus Communications Pty Ltd 4755 285 111 81 Videsh Sanchar Nigam Ltd. Aut 4134 276 1978 98 Data Communications Bureau 9443 276 44 64 Primus Telecommunications 17557 256 18 98 Pakistan Telecom 4766 209 1516 147 Korea Internet Exchange for " 7539 169 256 162 TANet2, sponsored by NSC, TAI 4804 164 84 67 Microplex PTY LTD 9583 151 32 5 Satyam Infoway Ltd., 9768 142 385 82 Korea Telecom 4780 129 186 39 Digital United Inc. 7657 122 22 85 The Internet Group Limited 4713 120 891 104 NTT Communications Corporatio 17676 119 1904 12 XTAGE CORPORATION RIPE Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 702 1029 2596 844 UUNET Technologies, Inc. 3301 389 923 344 TeliaNet Sweden 3215 267 581 175 France Telecom / &Equant 5515 264 696 169 Sonera Finland Autonomous Sys 680 232 2149 231 DFN-IP service G-WiN 1257 225 472 221 SWIPnet Swedish IP Network 3320 225 1964 173 Deutsche Telekom AG 5400 197 84 94 Concert European Core Network 786 182 1874 182 The JANET IP Service 719 163 289 118 LANLINK autonomous system 8708 160 23 148 Romania Data Systems S.A. 2856 129 788 118 BTnet UK Regional network 12302 125 8 46 MobiFon S.A. 3303 124 565 123 Swisscom Ltd 3269 117 694 71 TELECOM ITALIA 8297 117 53 67 Teleglobe Autonomous System i 5511 103 194 91 France Telecom 517 102 226 98 KPNQwest Germany GmbH 9051 101 6 25 INCONET Autonomous System 2874 96 84 36 Global One Services AB ARIN Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 701 2085 8445 1448 UUNET Technologies, Inc. 7018 1238 7513 919 AT&T 3908 849 1675 479 Supernet, Inc. 1239 813 3371 636 Sprint 1 811 8123 608 BBN Planet 852 629 1112 416 Telus Advanced Communications 4323 629 436 252 Time Warner Communications, I 7046 602 837 373 UUNET Technologies, Inc. 209 557 1993 323 Qwest 7132 522 552 161 Southwestern Bell Internet Se 3549 513 860 265 Global Crossing 690 454 67 297 Merit Network 7843 421 298 47 Adelphia Corp. 2914 415 2162 412 Verio, Inc. 705 374 115 266 UUNET Technologies, Inc. 2149 367 208 305 Performance Systems, Inc. 3741 341 731 234 The Internet Solution 7066 336 203 251 Virginia Polytechnic Institut 6197 332 217 173 BellSouth Network Solutions, 3561 321 2152 288 Cable & Wireless USA Global Per AS Maximum Aggr summary ---------------------------------- ASN No of nets Net Savings Description 4538 464 447 China Education and Research 4323 629 377 Time Warner Communications, I 7843 421 374 Adelphia Corp. 3908 849 370 Supernet, Inc. 7132 522 361 Southwestern Bell Internet Se 1221 1284 340 Telstra Pty Ltd 9394 331 327 CHINA RAILWAY Internet(CRNET) 7018 1238 319 AT&T 4151 308 292 USDA 6198 311 280 BellSouth Network Solutions, 4565 311 277 Epoch Networks 11371 277 271 Rhythms NetConnections 3549 513 248 Global Crossing 6347 317 238 SAVVIS Communications Corpora 209 557 234 Qwest 7029 246 231 Alltel Information Services, 7046 602 229 UUNET Technologies, Inc. 852 629 213 Telus Advanced Communications 9443 276 212 Primus Telecommunications 4355 245 209 EarthLink, Inc. List of Unregistered ASNs (Global) ---------------------------------- Bad AS Designation Network Transit AS Description 23279 UNALLOCATED 63.238.4.0/24 209 Qwest 64516 PRIVATE 137.164.227.0/24 2150 California State Uni 64516 PRIVATE 137.164.228.0/22 2150 California State Uni 112 UNALLOCATED 192.175.48.0/24 3557 Vixie Enterprises 65535 PRIVATE 198.93.230.0/24 3550 Ateneo de Manila Uni 65535 PRIVATE 198.93.231.0/24 3550 Ateneo de Manila Uni 65535 PRIVATE 198.94.168.0/24 3550 Ateneo de Manila Uni 65535 PRIVATE 198.94.169.0/24 3550 Ateneo de Manila Uni 5757 UNALLOCATED 207.19.224.0/24 701 UUNET Technologies, 23279 UNALLOCATED 216.207.52.0/24 209 Qwest 23279 UNALLOCATED 216.207.53.0/24 209 Qwest Advertised Unregistered Addresses --------------------------------- Network Origin AS Description 39.0.0.0/8 4554 Exchange Point Blocks 96.0.0.0/20 3549 Global Crossing 132.0.0.0/10 568 DISO-UNRRA 134.137.0.0/16 7170 AT&T Government Markets 135.0.0.0/13 10455 Lucent Technologies 137.0.0.0/13 568 DISO-UNRRA 138.94.0.0/16 1 BBN Planet 144.7.0.0/16 701 UUNET Technologies, Inc. 153.36.0.0/14 701 UUNET Technologies, Inc. 154.150.0.0/16 6494 IDCI 158.0.0.0/13 568 DISO-UNRRA 164.233.0.0/16 6020 DISA NETWORK SERVICES 164.235.0.0/16 6025 US DOD NIC Unregistered 201.115.100.0/24 7018 AT&T Number of prefixes announced per prefix length (Global) ------------------------------------------------------- /1:0 /2:0 /3:0 /4:0 /5:0 /6:0 /7:0 /8:18 /9:5 /10:8 /11:14 /12:35 /13:88 /14:231 /15:402 /16:7182 /17:1398 /18:2570 /19:7438 /20:6904 /21:4952 /22:7580 /23:9158 /24:61569 /25:222 /26:270 /27:118 /28:102 /29:105 /30:126 /31:0 /32:37 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 701 1355 2085 UUNET Technologies, Inc. 1221 1143 1284 Telstra Pty Ltd 702 654 1029 UUNET Technologies, Inc. 7018 647 1238 AT&T 3908 581 849 Supernet, Inc. 4323 498 629 Time Warner Communications, I 1239 470 813 Sprint 690 449 454 Merit Network 7046 415 602 UUNET Technologies, Inc. 1 405 811 BBN Planet 852 381 629 Telus Advanced Communications 3549 373 513 Global Crossing 209 366 557 Qwest 2764 340 385 connect.com.au pty ltd 703 336 416 UUNET Technologies, Inc. 705 322 374 UUNET Technologies, Inc. 9394 317 331 CHINA RAILWAY Internet(CRNET) 7066 307 336 Virginia Polytechnic Institut 4565 286 311 Epoch Networks 2149 283 367 Performance Systems, Inc. Number of /24s announced per /8 block (Global) ---------------------------------------------- 3:1 4:7 9:1 12:490 13:10 15:2 17:6 20:2 24:750 25:1 32:68 38:8 40:6 44:1 57:14 61:312 62:152 63:1904 64:1180 65:1111 66:787 67:57 68:4 80:224 81:7 128:64 129:128 130:23 131:56 132:11 133:3 134:126 135:10 136:314 137:97 138:138 139:49 140:187 141:90 142:83 143:38 144:141 145:11 146:220 147:147 148:138 149:91 150:39 151:46 152:317 153:33 154:1 155:108 156:76 157:118 158:72 159:125 160:27 161:55 162:140 163:104 164:134 165:122 166:220 167:193 168:100 169:52 170:288 171:2 192:5436 193:2267 194:2095 195:795 196:429 198:3723 199:3202 200:2395 201:1 202:3119 203:4574 204:3244 205:2166 206:2565 207:2672 208:2572 209:2813 210:590 211:208 212:876 213:597 214:9 215:18 216:3084 217:462 218:15 End of report

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The Cidr Report
by CIDR Report 30 Mar '02

30 Mar '02

This is an auto-generated mail on Fri Mar 29 23:00:00 PST 2002 It is not checked before it leaves my workstation. However, hopefully you will find this report interesting and will take the time to look through this to see if you can improve the amount of aggregation you perform. Check http://www.employees.org/~tbates/cidr-report.html for a daily update of this report. NEW: Check http://www.employees.org/~tbates/cidr-report-region.html for the regional version of this report. NEW: Check http://www.employees.org/~tbates/autnums.html for a complete list of autonomous system number to name mappings as used by the CIDR-Report. The report is split into sections: 0) General Status List the route table history for the last week, list any possibly bogus routes seen and give some status on ASes. 1) Gains by aggregating at the origin AS level This lists the "Top 30" players who if they decided to aggregate their announced classful prefixes at the origin AS level could make a significant difference in the reduction of the current size of the Internet routing table. This calculation does not take into account the inclusion of holes when forming an aggregate so it is possible even larger reduction should be possible. 2) Weekly Delta A summary of the last weeks changes in terms of withdrawn and added routes. Please note that this is only a snapshot but does give some indication of ASes participating in CIDR. Clearly, it is generally a good thing to see a large amont of withdrawls. 3) Interesting aggregates Interesting here means not an aggregate made as a set of classful routes. Thanks to GX Networks for giving me access to their routing tables once a day. Please send any comments about this report directly to CIDR Report <cidr-report(a)cisco.com>. ------------------------------------------------------------------------------ CIDR REPORT for 29Mar02 0) General Status Table History ------------- Date Prefixes 220302 107724 230302 107901 240302 107734 250302 107843 260302 108092 270302 108294 280302 108313 290302 108300 Check http://www.employees.org/~tbates/cidr.plot.html for a plot of the table history. Possible Bogus Routes --------------------- *** Bogus 10.1.1.1/32 from AS(65301) *** Bogus 96.0.0.0/20 from AS3549 AS Summary ---------- Number of ASes in routing system: 12700 Number of ASes announcing only one prefix: 7722 (4357 cidr, 3365 classful) Largest number of cidr routes: 714 announced by AS701 Largest number of classful routes: 1351 announced by AS701 1) Gains by aggregating at the origin AS level --- 29Mar02 --- ASnum NetsNow NetsCIDR NetGain % Gain Description AS1221 1122 868 254 22.6% Telstra Pty Ltd AS17557 252 95 157 62.3% Pakistan Telecom AS16473 197 76 121 61.4% Bell South AS6595 174 60 114 65.5% DoD Education Activity Network As AS4151 257 150 107 41.6% USDA AS19632 94 9 85 90.4% Metropolis Intercom S.A. AS577 269 189 80 29.7% Bell Advanced Communications Inc. AS2048 183 103 80 43.7% State of Louisiana AS12302 116 37 79 68.1% MobiFon S.A. AS1239 499 422 77 15.4% Sprint AS4323 411 339 72 17.5% Time Warner Communications, Inc. AS4755 215 147 68 31.6% Videsh Sanchar Nigam Ltd. Autonom AS3908 326 261 65 19.9% Supernet, Inc. AS3464 157 97 60 38.2% Alabama SuperComputer Network AS1 475 415 60 12.6% BBN Planet AS10620 79 21 58 73.4% TVCABLE BOGOTA AS16758 63 6 57 90.5% IKON Office Solutions AS209 317 262 55 17.4% Qwest AS16814 72 17 55 76.4% NSS, S.A. AS226 143 90 53 37.1% Los Nettos AS19834 61 8 53 86.9% NetForce, Inc. AS17922 64 13 51 79.7% SATELINDO IS THE TELECOMMUNICATIO AS2149 291 242 49 16.8% Performance Systems, Inc. AS376 117 71 46 39.3% Reseau Interordinateurs Scientiqu AS5515 207 163 44 21.3% Sonera Finland Autonomous System AS6535 59 16 43 72.9% Chilesat Servicios Empresariales AS6517 98 55 43 43.9% Yipes Communications, Inc. AS3215 172 129 43 25.0% France Telecom / &Equant AS5536 80 38 42 52.5% Internet Egypt Network AS5416 51 9 42 82.4% BATELCO-BH Total 41228 31967 9261 22.5% For the rest of the previous weeks gain information please see http://www.employees.org:80/~tbates/cidr-report.html 2) Weekly Delta Please see http://www.employees.org:80/~tbates/cidr-report.html for this part of the report 3) Interesting aggregates Please see http://www.employees.org:80/~tbates/cidr-report.html for this part of the report

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Weekly Routing Table Report
by Routing Table Analysis 29 Mar '02

29 Mar '02

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 29 Mar, 2002 Analysis Summary ---------------- BGP routing table entries examined: 110532 Prefixes after maximum aggregation: 72321 Unique aggregates announced to Internet: 53586 Total ASes present in the Internet Routing Table: 12821 Origin-only ASes present in the Internet Routing Table: 11097 Origin ASes announcing only one prefix: 4863 Transit ASes present in the Internet Routing Table: 1724 Transit-only ASes present in the Internet Routing Table: 54 Average AS path length visible in the Internet Routing Table: 5.3 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: 14 Number of addresses announced to Internet: 1163171560 Equivalent to 69 /8s, 84 /16s and 150 /24s Percentage of available address space announced: 31.4 Percentage of allocated address space announced: 59.4 Percentage of available address space allocated: 52.8 Total number of prefixes smaller than registry allocations: 74196 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 18278 Total APNIC prefixes after maximum aggregation: 10781 Prefixes being announced from the APNIC address blocks: 16756 Unique aggregates announced from the APNIC address blocks: 10127 APNIC Region origin ASes present in the Internet Routing Table: 1471 APNIC Region origin ASes announcing only one prefix: 477 APNIC Region transit ASes present in the Internet Routing Table: 262 Average APNIC Region AS path length visible: 5.3 Max APNIC Region AS path length visible: 15 Number of APNIC addresses announced to Internet: 82277440 Equivalent to 4 /8s, 231 /16s and 116 /24s Percentage of available APNIC address space announced: 60.8 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 220/8 ARIN Region Analysis Summary ---------------------------- Prefixes being announced by ARIN Region ASes: 73730 Total ARIN prefixes after maximum aggregation: 47319 Prefixes being announced from the ARIN address blocks: 52165 Unique aggregates announced from the ARIN address blocks: 17506 ARIN Region origin ASes present in the Internet Routing Table: 7584 ARIN Region origin ASes announcing only one prefix: 2390 ARIN Region transit ASes present in the Internet Routing Table: 769 Average ARIN Region AS path length visible: 5.2 Max ARIN Region AS path length visible: 16 Number of ARIN addresses announced to Internet: 184069572 Equivalent to 10 /8s, 248 /16s and 173 /24s Percentage of available ARIN address space announced: 68.6 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 ARIN Address Blocks 24/8, 63/8, 64/6, 68/8, 199/8, 200/8, 204/6, 208/7 and 216/8 RIPE Region Analysis Summary ---------------------------- Prefixes being announced by RIPE Region ASes: 18518 Total RIPE prefixes after maximum aggregation: 14221 Prefixes being announced from the RIPE address blocks: 15231 Unique aggregates announced from the RIPE address blocks: 10125 RIPE Region origin ASes present in the Internet Routing Table: 3711 RIPE Region origin ASes announcing only one prefix: 1996 RIPE Region transit ASes present in the Internet Routing Table: 677 Average RIPE Region AS path length visible: 5.8 Max RIPE Region AS path length visible: 17 Number of RIPE addresses announced to Internet: 108317472 Equivalent to 6 /8s, 116 /16s and 203 /24s Percentage of available RIPE address space announced: 71.7 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 RIPE Address Blocks 62/8, 80/7, 193/8, 194/7, 212/7 and 217/8 APNIC Region per AS prefix count summary ---------------------------------------- ASN No of nets /20 equiv MaxAgg Description 1221 1284 1211 944 Telstra Pty Ltd 4538 464 1194 17 China Education and Research 2907 437 1895 371 SINET Japan 703 416 336 324 UUNET Technologies, Inc. 2764 385 361 360 connect.com.au pty ltd 9394 331 113 4 CHINA RAILWAY Internet(CRNET) 7474 312 290 211 Optus Communications Pty Ltd 4755 285 111 81 Videsh Sanchar Nigam Ltd. Aut 4134 276 1978 98 Data Communications Bureau 9443 276 44 64 Primus Telecommunications 17557 256 18 98 Pakistan Telecom 4766 209 1516 147 Korea Internet Exchange for " 7539 169 256 162 TANet2, sponsored by NSC, TAI 4804 164 84 67 Microplex PTY LTD 9583 151 32 5 Satyam Infoway Ltd., 9768 142 385 82 Korea Telecom 4780 129 186 39 Digital United Inc. 7657 122 22 85 The Internet Group Limited 4713 120 891 104 NTT Communications Corporatio 17676 119 1904 12 XTAGE CORPORATION RIPE Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 702 1029 2596 844 UUNET Technologies, Inc. 3301 389 923 344 TeliaNet Sweden 3215 267 581 175 France Telecom / &Equant 5515 264 696 169 Sonera Finland Autonomous Sys 680 232 2149 231 DFN-IP service G-WiN 1257 225 472 221 SWIPnet Swedish IP Network 3320 225 1964 173 Deutsche Telekom AG 5400 197 84 94 Concert European Core Network 786 182 1874 182 The JANET IP Service 719 163 289 118 LANLINK autonomous system 8708 160 23 148 Romania Data Systems S.A. 2856 129 788 118 BTnet UK Regional network 12302 125 8 46 MobiFon S.A. 3303 124 565 123 Swisscom Ltd 3269 117 694 71 TELECOM ITALIA 8297 117 53 67 Teleglobe Autonomous System i 5511 103 194 91 France Telecom 517 102 226 98 KPNQwest Germany GmbH 9051 101 6 25 INCONET Autonomous System 2874 96 84 36 Global One Services AB ARIN Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 701 2085 8445 1448 UUNET Technologies, Inc. 7018 1238 7513 919 AT&T 3908 849 1675 479 Supernet, Inc. 1239 813 3371 636 Sprint 1 811 8123 608 BBN Planet 852 629 1112 416 Telus Advanced Communications 4323 629 436 252 Time Warner Communications, I 7046 602 837 373 UUNET Technologies, Inc. 209 557 1993 323 Qwest 7132 522 552 161 Southwestern Bell Internet Se 3549 513 860 265 Global Crossing 690 454 67 297 Merit Network 7843 421 298 47 Adelphia Corp. 2914 415 2162 412 Verio, Inc. 705 374 115 266 UUNET Technologies, Inc. 2149 367 208 305 Performance Systems, Inc. 3741 341 731 234 The Internet Solution 7066 336 203 251 Virginia Polytechnic Institut 6197 332 217 173 BellSouth Network Solutions, 3561 321 2152 288 Cable & Wireless USA Global Per AS Maximum Aggr summary ---------------------------------- ASN No of nets Net Savings Description 4538 464 447 China Education and Research 4323 629 377 Time Warner Communications, I 7843 421 374 Adelphia Corp. 3908 849 370 Supernet, Inc. 7132 522 361 Southwestern Bell Internet Se 1221 1284 340 Telstra Pty Ltd 9394 331 327 CHINA RAILWAY Internet(CRNET) 7018 1238 319 AT&T 4151 308 292 USDA 6198 311 280 BellSouth Network Solutions, 4565 311 277 Epoch Networks 11371 277 271 Rhythms NetConnections 3549 513 248 Global Crossing 6347 317 238 SAVVIS Communications Corpora 209 557 234 Qwest 7029 246 231 Alltel Information Services, 7046 602 229 UUNET Technologies, Inc. 852 629 213 Telus Advanced Communications 9443 276 212 Primus Telecommunications 4355 245 209 EarthLink, Inc. List of Unregistered ASNs (Global) ---------------------------------- Bad AS Designation Network Transit AS Description 23279 UNALLOCATED 63.238.4.0/24 209 Qwest 64516 PRIVATE 137.164.227.0/24 2150 California State Uni 64516 PRIVATE 137.164.228.0/22 2150 California State Uni 112 UNALLOCATED 192.175.48.0/24 3557 Vixie Enterprises 65535 PRIVATE 198.93.230.0/24 3550 Ateneo de Manila Uni 65535 PRIVATE 198.93.231.0/24 3550 Ateneo de Manila Uni 65535 PRIVATE 198.94.168.0/24 3550 Ateneo de Manila Uni 65535 PRIVATE 198.94.169.0/24 3550 Ateneo de Manila Uni 5757 UNALLOCATED 207.19.224.0/24 701 UUNET Technologies, 23279 UNALLOCATED 216.207.52.0/24 209 Qwest 23279 UNALLOCATED 216.207.53.0/24 209 Qwest Advertised Unregistered Addresses --------------------------------- Network Origin AS Description 39.0.0.0/8 4554 Exchange Point Blocks 96.0.0.0/20 3549 Global Crossing 132.0.0.0/10 568 DISO-UNRRA 134.137.0.0/16 7170 AT&T Government Markets 135.0.0.0/13 10455 Lucent Technologies 137.0.0.0/13 568 DISO-UNRRA 138.94.0.0/16 1 BBN Planet 144.7.0.0/16 701 UUNET Technologies, Inc. 153.36.0.0/14 701 UUNET Technologies, Inc. 154.150.0.0/16 6494 IDCI 158.0.0.0/13 568 DISO-UNRRA 164.233.0.0/16 6020 DISA NETWORK SERVICES 164.235.0.0/16 6025 US DOD NIC Unregistered 201.115.100.0/24 7018 AT&T Number of prefixes announced per prefix length (Global) ------------------------------------------------------- /1:0 /2:0 /3:0 /4:0 /5:0 /6:0 /7:0 /8:18 /9:5 /10:8 /11:14 /12:35 /13:88 /14:231 /15:402 /16:7182 /17:1398 /18:2570 /19:7438 /20:6904 /21:4952 /22:7580 /23:9158 /24:61569 /25:222 /26:270 /27:118 /28:102 /29:105 /30:126 /31:0 /32:37 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 701 1355 2085 UUNET Technologies, Inc. 1221 1143 1284 Telstra Pty Ltd 702 654 1029 UUNET Technologies, Inc. 7018 647 1238 AT&T 3908 581 849 Supernet, Inc. 4323 498 629 Time Warner Communications, I 1239 470 813 Sprint 690 449 454 Merit Network 7046 415 602 UUNET Technologies, Inc. 1 405 811 BBN Planet 852 381 629 Telus Advanced Communications 3549 373 513 Global Crossing 209 366 557 Qwest 2764 340 385 connect.com.au pty ltd 703 336 416 UUNET Technologies, Inc. 705 322 374 UUNET Technologies, Inc. 9394 317 331 CHINA RAILWAY Internet(CRNET) 7066 307 336 Virginia Polytechnic Institut 4565 286 311 Epoch Networks 2149 283 367 Performance Systems, Inc. Number of /24s announced per /8 block (Global) ---------------------------------------------- 3:1 4:7 9:1 12:490 13:10 15:2 17:6 20:2 24:750 25:1 32:68 38:8 40:6 44:1 57:14 61:312 62:152 63:1904 64:1180 65:1111 66:787 67:57 68:4 80:224 81:7 128:64 129:128 130:23 131:56 132:11 133:3 134:126 135:10 136:314 137:97 138:138 139:49 140:187 141:90 142:83 143:38 144:141 145:11 146:220 147:147 148:138 149:91 150:39 151:46 152:317 153:33 154:1 155:108 156:76 157:118 158:72 159:125 160:27 161:55 162:140 163:104 164:134 165:122 166:220 167:193 168:100 169:52 170:288 171:2 192:5436 193:2267 194:2095 195:795 196:429 198:3723 199:3202 200:2395 201:1 202:3119 203:4574 204:3244 205:2166 206:2565 207:2672 208:2572 209:2813 210:590 211:208 212:876 213:597 214:9 215:18 216:3084 217:462 218:15 End of report

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Flap Viewer
by Fabrizio Lombardozzi 28 Mar '02

28 Mar '02

Hi ris-users, my name is Fabrizio Lombardozzi, I've developed a system to monitor inter-AS routing instabilities (route flaps) at the Computer Networks Research Group, of the Roma III University, Italy. The system retrieves BGP data from RIS, and produces interactive graphs and animations using a graph drawing engine and intuitive morphing animations, with a reasonably friendly web graphic user interface (it's an applet). I will be grateful if you could give me some comments and hopefully suggestions. At the url http://www.dia.uniroma3.it/~compunet/ you will find detailed instructions to start the applet and also a gallery with screenshots and animations. Thanks in Advance Fabrizio

2 2

The Cidr Report
by CIDR Report 23 Mar '02

23 Mar '02

This is an auto-generated mail on Fri Mar 22 23:00:00 PST 2002 It is not checked before it leaves my workstation. However, hopefully you will find this report interesting and will take the time to look through this to see if you can improve the amount of aggregation you perform. Check http://www.employees.org/~tbates/cidr-report.html for a daily update of this report. NEW: Check http://www.employees.org/~tbates/cidr-report-region.html for the regional version of this report. NEW: Check http://www.employees.org/~tbates/autnums.html for a complete list of autonomous system number to name mappings as used by the CIDR-Report. The report is split into sections: 0) General Status List the route table history for the last week, list any possibly bogus routes seen and give some status on ASes. 1) Gains by aggregating at the origin AS level This lists the "Top 30" players who if they decided to aggregate their announced classful prefixes at the origin AS level could make a significant difference in the reduction of the current size of the Internet routing table. This calculation does not take into account the inclusion of holes when forming an aggregate so it is possible even larger reduction should be possible. 2) Weekly Delta A summary of the last weeks changes in terms of withdrawn and added routes. Please note that this is only a snapshot but does give some indication of ASes participating in CIDR. Clearly, it is generally a good thing to see a large amont of withdrawls. 3) Interesting aggregates Interesting here means not an aggregate made as a set of classful routes. Thanks to GX Networks for giving me access to their routing tables once a day. Please send any comments about this report directly to CIDR Report <cidr-report(a)cisco.com>. ------------------------------------------------------------------------------ CIDR REPORT for 22Mar02 0) General Status Table History ------------- Date Prefixes 150302 107703 160302 107617 170302 107671 180302 107620 190302 107636 200302 107764 210302 107710 220302 107724 Check http://www.employees.org/~tbates/cidr.plot.html for a plot of the table history. Possible Bogus Routes --------------------- *** Bogus 10.1.1.1/32 from AS(65301) *** Bogus 96.0.0.0/20 from AS3549 AS Summary ---------- Number of ASes in routing system: 12654 Number of ASes announcing only one prefix: 7701 (4335 cidr, 3366 classful) Largest number of cidr routes: 720 announced by AS701 Largest number of classful routes: 1377 announced by AS701 1) Gains by aggregating at the origin AS level --- 22Mar02 --- ASnum NetsNow NetsCIDR NetGain % Gain Description AS701 1377 1122 255 18.5% UUNET Technologies, Inc. AS1221 1125 873 252 22.4% Telstra Pty Ltd AS17557 242 91 151 62.4% Pakistan Telecom AS852 489 349 140 28.6% Telus Advanced Communications AS7018 821 700 121 14.7% AT&T AS16473 198 77 121 61.1% Bell South AS6595 168 58 110 65.5% DoD Education Activity Network As AS4151 256 150 106 41.4% USDA AS705 309 207 102 33.0% UUNET Technologies, Inc. AS7046 348 247 101 29.0% UUNET Technologies, Inc. AS19632 94 9 85 90.4% Metropolis Intercom S.A. AS2048 185 104 81 43.8% State of Louisiana AS577 271 191 80 29.5% Bell Advanced Communications Inc. AS12302 116 37 79 68.1% MobiFon S.A. AS9051 100 24 76 76.0% INCONET Autonomous System AS1239 498 422 76 15.3% Sprint AS4323 412 340 72 17.5% Time Warner Communications, Inc. AS4755 218 148 70 32.1% Videsh Sanchar Nigam Ltd. Autonom AS7303 116 51 65 56.0% Telecom Argentina Stet-France Tel AS3908 329 264 65 19.8% Supernet, Inc. AS3464 157 97 60 38.2% Alabama SuperComputer Network AS1 476 416 60 12.6% BBN Planet AS10620 79 21 58 73.4% TVCABLE BOGOTA AS16758 63 6 57 90.5% IKON Office Solutions AS724 203 147 56 27.6% DLA Systems Automation Center AS209 314 258 56 17.8% Qwest AS16814 72 17 55 76.4% NSS, S.A. AS702 588 535 53 9.0% UUNET Technologies, Inc. AS226 142 89 53 37.3% Los Nettos AS19834 61 8 53 86.9% NetForce, Inc. Total 54241 42105 12136 22.4% For the rest of the previous weeks gain information please see http://www.employees.org:80/~tbates/cidr-report.html 2) Weekly Delta Please see http://www.employees.org:80/~tbates/cidr-report.html for this part of the report 3) Interesting aggregates Please see http://www.employees.org:80/~tbates/cidr-report.html for this part of the report

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Weekly Routing Table Report
by Routing Table Analysis 22 Mar '02

22 Mar '02

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 22 Mar, 2002 Analysis Summary ---------------- BGP routing table entries examined: 109956 Prefixes after maximum aggregation: 72203 Unique aggregates announced to Internet: 52252 Total ASes present in the Internet Routing Table: 12779 Origin-only ASes present in the Internet Routing Table: 11065 Origin ASes announcing only one prefix: 4843 Transit ASes present in the Internet Routing Table: 1714 Transit-only ASes present in the Internet Routing Table: 55 Average AS path length visible in the Internet Routing Table: 5.4 Max AS path length visible: 19 Illegal AS announcements present in the Routing Table: 6 Non-routable prefixes present in the Routing Table: 0 Prefixes being announced from the IANA Reserved Address blocks: 14 Number of addresses announced to Internet: 1168580328 Equivalent to 69 /8s, 167 /16s and 30 /24s Percentage of available address space announced: 31.5 Percentage of allocated address space announced: 59.7 Percentage of available address space allocated: 52.8 Total number of prefixes smaller than registry allocations: 73621 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 18137 Total APNIC prefixes after maximum aggregation: 10698 Prefixes being announced from the APNIC address blocks: 16655 Unique aggregates announced from the APNIC address blocks: 10053 APNIC Region origin ASes present in the Internet Routing Table: 1470 APNIC Region origin ASes announcing only one prefix: 477 APNIC Region transit ASes present in the Internet Routing Table: 259 Average APNIC Region AS path length visible: 5.3 Max APNIC Region AS path length visible: 15 Number of APNIC addresses announced to Internet: 82062400 Equivalent to 4 /8s, 228 /16s and 44 /24s Percentage of available APNIC address space announced: 60.7 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 220/8 ARIN Region Analysis Summary ---------------------------- Prefixes being announced by ARIN Region ASes: 73404 Total ARIN prefixes after maximum aggregation: 47340 Prefixes being announced from the ARIN address blocks: 51865 Unique aggregates announced from the ARIN address blocks: 16357 ARIN Region origin ASes present in the Internet Routing Table: 7566 ARIN Region origin ASes announcing only one prefix: 2384 ARIN Region transit ASes present in the Internet Routing Table: 762 Average ARIN Region AS path length visible: 5.2 Max ARIN Region AS path length visible: 16 Number of ARIN addresses announced to Internet: 190253252 Equivalent to 11 /8s, 87 /16s and 8 /24s Percentage of available ARIN address space announced: 70.9 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 ARIN Address Blocks 24/8, 63/8, 64/6, 68/8, 199/8, 200/8, 204/6, 208/7 and 216/8 RIPE Region Analysis Summary ---------------------------- Prefixes being announced by RIPE Region ASes: 18411 Total RIPE prefixes after maximum aggregation: 14165 Prefixes being announced from the RIPE address blocks: 15142 Unique aggregates announced from the RIPE address blocks: 10085 RIPE Region origin ASes present in the Internet Routing Table: 3687 RIPE Region origin ASes announcing only one prefix: 1982 RIPE Region transit ASes present in the Internet Routing Table: 679 Average RIPE Region AS path length visible: 5.8 Max RIPE Region AS path length visible: 19 Number of RIPE addresses announced to Internet: 107780960 Equivalent to 6 /8s, 108 /16s and 155 /24s Percentage of available RIPE address space announced: 71.4 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 RIPE Address Blocks 62/8, 80/7, 193/8, 194/7, 212/7 and 217/8 APNIC Region per AS prefix count summary ---------------------------------------- ASN No of nets /20 equiv MaxAgg Description 1221 1289 1213 952 Telstra Pty Ltd 4538 462 1194 17 China Education and Research 703 409 335 319 UUNET Technologies, Inc. 2907 405 1894 370 SINET Japan 2764 384 361 360 connect.com.au pty ltd 9394 317 113 4 CHINA RAILWAY Internet(CRNET) 7474 302 289 206 Optus Communications Pty Ltd 4755 293 113 85 Videsh Sanchar Nigam Ltd. Aut 9443 276 44 64 Primus Telecommunications 4134 272 1962 95 Data Communications Bureau 17557 246 16 94 Pakistan Telecom 4766 206 1516 146 Korea Internet Exchange for " 7539 166 239 160 TANet2, sponsored by NSC, TAI 4804 165 84 68 Microplex PTY LTD 9583 148 32 5 Satyam Infoway Ltd., 9768 138 385 82 Korea Telecom 7657 122 22 85 The Internet Group Limited 4713 120 891 104 NTT Communications Corporatio 17676 119 1904 12 XTAGE CORPORATION 4780 118 186 40 Digital United Inc. RIPE Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 702 1032 2608 848 UUNET Technologies, Inc. 3301 394 924 349 TeliaNet Sweden 3215 265 586 158 France Telecom / &Equant 5515 262 696 168 Sonera Finland Autonomous Sys 680 232 2149 231 DFN-IP service G-WiN 1257 222 464 218 SWIPnet Swedish IP Network 5400 198 83 93 Concert European Core Network 3320 197 1964 172 Deutsche Telekom AG 786 182 1874 182 The JANET IP Service 719 163 289 118 LANLINK autonomous system 8708 157 23 145 Romania Data Systems S.A. 2856 129 788 118 BTnet UK Regional network 3303 125 581 124 Swisscom Ltd 12302 125 8 46 MobiFon S.A. 8297 120 53 67 Teleglobe Autonomous System i 3269 117 694 71 TELECOM ITALIA 517 103 226 99 KPNQwest Germany GmbH 9051 101 6 25 INCONET Autonomous System 5511 100 193 89 France Telecom 2874 97 100 37 Global One Services AB ARIN Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 701 2106 8368 1495 UUNET Technologies, Inc. 7018 1229 7529 914 AT&T 3908 848 1675 477 Supernet, Inc. 1 810 8123 605 BBN Planet 1239 809 3368 634 Sprint 852 672 5204 411 Telus Advanced Communications 4323 624 436 253 Time Warner Communications, I 7046 605 834 393 UUNET Technologies, Inc. 209 555 1992 319 Qwest 7132 518 545 158 Southwestern Bell Internet Se 3549 502 845 257 Global Crossing 690 462 69 305 Merit Network 2914 414 2169 410 Verio, Inc. 7843 398 314 49 Adelphia Corp. 705 378 116 270 UUNET Technologies, Inc. 2149 377 209 314 Performance Systems, Inc. 3741 343 731 233 The Internet Solution 6197 330 217 171 BellSouth Network Solutions, 3561 318 2151 285 Cable & Wireless USA 7066 318 203 251 Virginia Polytechnic Institut Global Per AS Maximum Aggr summary ---------------------------------- ASN No of nets Net Savings Description 4538 462 445 China Education and Research 3908 848 371 Supernet, Inc. 4323 624 371 Time Warner Communications, I 7132 518 360 Southwestern Bell Internet Se 7843 398 349 Adelphia Corp. 1221 1289 337 Telstra Pty Ltd 7018 1229 315 AT&T 9394 317 313 CHINA RAILWAY Internet(CRNET) 4151 307 291 USDA 6198 310 279 BellSouth Network Solutions, 11371 277 271 Rhythms NetConnections 852 672 261 Telus Advanced Communications 3549 502 245 Global Crossing 6347 316 238 SAVVIS Communications Corpora 209 555 236 Qwest 7029 244 229 Alltel Information Services, 7046 605 212 UUNET Technologies, Inc. 9443 276 212 Primus Telecommunications 4755 293 208 Videsh Sanchar Nigam Ltd. Aut 1 810 205 BBN Planet List of Unregistered ASNs (Global) ---------------------------------- Bad AS Designation Network Transit AS Description 112 UNALLOCATED 192.175.48.0/24 3557 Vixie Enterprises 65535 PRIVATE 198.93.230.0/24 3550 Ateneo de Manila Uni 65535 PRIVATE 198.93.231.0/24 3550 Ateneo de Manila Uni 65535 PRIVATE 198.94.168.0/24 3550 Ateneo de Manila Uni 65535 PRIVATE 198.94.169.0/24 3550 Ateneo de Manila Uni 5757 UNALLOCATED 207.19.224.0/24 701 UUNET Technologies, Advertised Unregistered Addresses --------------------------------- Network Origin AS Description 39.0.0.0/8 4554 Exchange Point Blocks 96.0.0.0/20 3549 Global Crossing 132.0.0.0/10 568 DISO-UNRRA 134.137.0.0/16 7170 AT&T Government Markets 135.0.0.0/13 10455 Lucent Technologies 137.0.0.0/13 568 DISO-UNRRA 138.94.0.0/16 1 BBN Planet 144.7.0.0/16 701 UUNET Technologies, Inc. 153.36.0.0/14 701 UUNET Technologies, Inc. 154.150.0.0/16 6494 IDCI 158.0.0.0/13 568 DISO-UNRRA 164.233.0.0/16 6020 DISA NETWORK SERVICES 164.235.0.0/16 6025 US DOD NIC Unregistered 201.115.100.0/24 7018 AT&T Number of prefixes announced per prefix length (Global) ------------------------------------------------------- /1:0 /2:0 /3:0 /4:0 /5:0 /6:0 /7:0 /8:19 /9:5 /10:8 /11:14 /12:35 /13:88 /14:229 /15:404 /16:7180 /17:1388 /18:2555 /19:7416 /20:6925 /21:4923 /22:7528 /23:9145 /24:61142 /25:219 /26:259 /27:115 /28:92 /29:102 /30:132 /31:0 /32:33 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 701 1373 2106 UUNET Technologies, Inc. 1221 1147 1289 Telstra Pty Ltd 702 654 1032 UUNET Technologies, Inc. 7018 643 1229 AT&T 3908 580 848 Supernet, Inc. 4323 495 624 Time Warner Communications, I 1239 467 809 Sprint 690 457 462 Merit Network 852 424 672 Telus Advanced Communications 7046 420 605 UUNET Technologies, Inc. 1 403 810 BBN Planet 209 365 555 Qwest 3549 363 502 Global Crossing 2764 340 384 connect.com.au pty ltd 703 330 409 UUNET Technologies, Inc. 705 325 378 UUNET Technologies, Inc. 9394 303 317 CHINA RAILWAY Internet(CRNET) 7066 289 318 Virginia Polytechnic Institut 2149 286 377 Performance Systems, Inc. 6197 279 330 BellSouth Network Solutions, Number of /24s announced per /8 block (Global) ---------------------------------------------- 3:1 9:1 12:478 13:10 15:2 17:5 20:2 24:741 25:1 32:68 38:9 40:6 44:1 57:14 61:302 62:166 63:1894 64:1180 65:1095 66:812 67:53 68:3 80:221 81:6 128:64 129:126 130:23 131:57 132:10 133:3 134:128 135:10 136:283 137:102 138:149 139:49 140:187 141:90 142:84 143:38 144:145 145:11 146:220 147:147 148:135 149:92 150:39 151:50 152:326 153:33 154:5 155:90 156:75 157:118 158:72 159:125 160:26 161:54 162:139 163:104 164:121 165:123 166:221 167:193 168:90 169:51 170:292 171:2 192:5441 193:2221 194:2102 195:793 196:428 198:3732 199:3199 200:2375 201:1 202:3088 203:4559 204:3275 205:2147 206:2496 207:2606 208:2573 209:2781 210:581 211:204 212:857 213:594 214:9 215:19 216:3016 217:459 218:13 End of report

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Suggestion for unallocated IP-Space
by kurt_kayser＠gmx.de 18 Mar '02

18 Mar '02

Hello Routing-WG, since it's more and more difficult to determine, which IP-space is used correctly in the Routing table, is there any chance to setup an easy-retrievable page (say via HTTP or FTP) to view current unallocated IP-space. We all know martians such as: RFC-1918-space, default, localhost and Multicast Space. But it's very hard to filter correctly on address- space that's currently handed out by the RIRs. If there could be a database run - say in a weekly interval - which could generate the 'empty' space blocks in a list - which could again used to filter against. Any supports for this idea? Regards, Kurt -- GMX - Die Kommunikationsplattform im Internet. http://www.gmx.net

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CIDR Report failed today
by Philip Smith 16 Mar '02

16 Mar '02

Apologies for the failed CIDR Report and the blank e-mail today. The system ran out of disk space a few hours ago - I'm currently working to fix the problem and everything should be back to normal tomorrow. best wishes! philip --

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