September 2008 - routing-wg - mailman.ripe.net

[routing-wg]ANNOUNCEMENT: RIPE NCC Training Courses
by Training 30 Oct '08

30 Oct '08

[Apologies for duplicate e-mails] Dear Colleagues, The RIPE NCC invites you to register for one of our upcoming training courses: - The LIR Training Course This course teaches LIRs how to request Internet number resources and interact with the RIPE NCC. A course outline is available at: http://www.ripe.net/training/lir/outline.html - The Routing Registry Training Course This course teaches LIRs how to use the RIPE Database for routing. A course outline is available at: http://www.ripe.net/training/rr/outline.html - The DNS for LIRs Training Course This course teaches LIRs about the RIPE NCC's DNS-related services. A course outline is available at: http://www.ripe.net/training/dns/outline.html To see the location of upcoming courses and to register, please use the LIR Portal or complete the registration form on our website at: http://www.ripe.net/cgi-bin/trainingform.pl.cgi If you have any questions please do not hesitate to contact us at <training(a)ripe.net>. Kind regards, Rumy Kanis Training Services Manager RIPE NCC

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RE: [routing-wg]a (perhaps) naive question...
by Paul Francis 30 Sep '08

30 Sep '08

Well, if the AS-set doesn't fit, that's a problem. But it isn't necessarily the case that simply because an AS that gets, say, RIPE addresses is transcontental means that it can't be part of a "RIPE" aggregate. One would have to sit down and see how bad the paths are relative to the RIB savings. I don't suppose anyone has done such a study? PF > -----Original Message----- > From: Florian Weimer [mailto:fw@deneb.enyo.de] > Sent: Monday, September 29, 2008 7:31 PM > To: Paul Francis > Cc: Routing WG > Subject: Re: [routing-wg]a (perhaps) naive question... > > * Paul Francis: > > > I was wondering the other day why we don't do aggregating > in BGP along > > the lines of registry assignments. For instance, what > stops the set > > of ISPs within Europe from from taking the 15 or 20 > prefixes given to > > RIPE by IANA, and collectively aggregating those prefixes when > > advertising to non-RIPE ISPs? It seems to me that they could > > advertise all of their AS#'s as a huge AS-set for these prefixes. > > The latter probably doesn't work because the AS set size > would exceed the maximum size of a BGP UPDATE message. The > number of prefixes is also large than 20 due to the pre-RIR > swamp space. > > > Is there a technical issue that prevents this, or does the > > organizational effort needed simply outweigh the benefit that would > > accrue? > > It leads to worse routing decisions and does not reflect the > reality of autonomous systems spanning multiple continents. > (Anyone who is multi-homed to one of those trans-continentals > would probably need a globally visible prefix.) > > Actually, for ISPs in the RIPE region, it would make more > sense to aggregate the prefixes of ISPs *not* in the RIPE region. >

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[routing-wg]Weekly Routing Table Report
by Routing Analysis Role Account 26 Sep '08

26 Sep '08

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 historical data, please see http://thyme.apnic.net. If you have any comments please contact Philip Smith <pfs(a)cisco.com>. Routing Table Report 04:00 +10GMT Sat 27 Sep, 2008 Report Website: http://thyme.apnic.net Detailed Analysis: http://thyme.apnic.net/current/ Analysis Summary ---------------- BGP routing table entries examined: 269646 Prefixes after maximum aggregation: 130166 Deaggregation factor: 2.07 Unique aggregates announced to Internet: 131386 Total ASes present in the Internet Routing Table: 29358 Prefixes per ASN: 9.18 Origin-only ASes present in the Internet Routing Table: 25526 Origin ASes announcing only one prefix: 12442 Transit ASes present in the Internet Routing Table: 3832 Transit-only ASes present in the Internet Routing Table: 87 Average AS path length visible in the Internet Routing Table: 3.6 Max AS path length visible: 26 Max AS path prepend of ASN ( 3816) 15 Prefixes from unregistered ASNs in the Routing Table: 561 Unregistered ASNs in the Routing Table: 205 Number of 32-bit ASNs allocated by the RIRs: 60 Prefixes from 32-bit ASNs in the Routing Table: 9 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 750 Number of addresses announced to Internet: 1908123392 Equivalent to 113 /8s, 187 /16s and 167 /24s Percentage of available address space announced: 51.5 Percentage of allocated address space announced: 62.5 Percentage of available address space allocated: 82.3 Percentage of address space in use by end-sites: 73.6 Total number of prefixes smaller than registry allocations: 132238 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 62392 Total APNIC prefixes after maximum aggregation: 23007 APNIC Deaggregation factor: 2.71 Prefixes being announced from the APNIC address blocks: 59284 Unique aggregates announced from the APNIC address blocks: 26672 APNIC Region origin ASes present in the Internet Routing Table: 3394 APNIC Prefixes per ASN: 17.47 APNIC Region origin ASes announcing only one prefix: 911 APNIC Region transit ASes present in the Internet Routing Table: 540 Average APNIC Region AS path length visible: 3.5 Max APNIC Region AS path length visible: 19 Number of APNIC addresses announced to Internet: 377913312 Equivalent to 22 /8s, 134 /16s and 127 /24s Percentage of available APNIC address space announced: 80.4 APNIC AS Blocks 4608-4864, 7467-7722, 9216-10239, 17408-18431 (pre-ERX allocations) 23552-24575, 37888-38911, 45056-46079 APNIC Address Blocks 58/8, 59/8, 60/8, 61/8, 112/8, 113/8, 114/8, 115/8, 116/8, 117/8, 118/8, 119/8, 120/8, 121/8, 122/8, 123/8, 124/8, 125/8, 126/8, 202/8, 203/8, 210/8, 211/8, 218/8, 219/8, 220/8, 221/8, 222/8, ARIN Region Analysis Summary ---------------------------- Prefixes being announced by ARIN Region ASes: 122559 Total ARIN prefixes after maximum aggregation: 64697 ARIN Deaggregation factor: 1.89 Prefixes being announced from the ARIN address blocks: 91822 Unique aggregates announced from the ARIN address blocks: 35181 ARIN Region origin ASes present in the Internet Routing Table: 12484 ARIN Prefixes per ASN: 7.36 ARIN Region origin ASes announcing only one prefix: 4833 ARIN Region transit ASes present in the Internet Routing Table: 1194 Average ARIN Region AS path length visible: 3.3 Max ARIN Region AS path length visible: 16 Number of ARIN addresses announced to Internet: 364411872 Equivalent to 21 /8s, 184 /16s and 123 /24s Percentage of available ARIN address space announced: 74.9 ARIN AS Blocks 1-1876, 1902-2042, 2044-2046, 2048-2106 (pre-ERX allocations) 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, 29696-30719, 31744-33791 35840-36863, 39936-40959, 46080-47103 ARIN Address Blocks 24/8, 63/8, 64/8, 65/8, 66/8, 67/8, 68/8, 69/8, 70/8, 71/8, 72/8, 73/8, 74/8, 75/8, 76/8, 96/8, 97/8, 98/8, 99/8, 173/8, 174/8, 199/8, 204/8, 205/8, 206/8, 207/8, 208/8, 209/8, 216/8, RIPE Region Analysis Summary ---------------------------- Prefixes being announced by RIPE Region ASes: 58577 Total RIPE prefixes after maximum aggregation: 35374 RIPE Deaggregation factor: 1.66 Prefixes being announced from the RIPE address blocks: 53728 Unique aggregates announced from the RIPE address blocks: 35985 RIPE Region origin ASes present in the Internet Routing Table: 11935 RIPE Prefixes per ASN: 4.50 RIPE Region origin ASes announcing only one prefix: 6284 RIPE Region transit ASes present in the Internet Routing Table: 1823 Average RIPE Region AS path length visible: 4.0 Max RIPE Region AS path length visible: 26 Number of RIPE addresses announced to Internet: 373446752 Equivalent to 22 /8s, 66 /16s and 88 /24s Percentage of available RIPE address space announced: 85.6 RIPE AS Blocks 1877-1901, 2043, 2047, 2107-2136, 2585-2614 (pre-ERX allocations) 2773-2822, 2830-2879, 3154-3353, 5377-5631 6656-6911, 8192-9215, 12288-13311, 15360-16383 20480-21503, 24576-25599, 28672-29695 30720-31743, 33792-35839, 38912-39935 40960-45055, 47104-49151 RIPE Address Blocks 62/8, 77/8, 78/8, 79/8, 80/8, 81/8, 82/8, 83/8, 84/8, 85/8, 86/8, 87/8, 88/8, 89/8, 90/8, 91/8, 92/8, 93/8, 94/8, 95/8, 193/8, 194/8, 195/8, 212/8, 213/8, 217/8, LACNIC Region Analysis Summary ------------------------------ Prefixes being announced by LACNIC Region ASes: 21455 Total LACNIC prefixes after maximum aggregation: 5370 LACNIC Deaggregation factor: 4.00 Prefixes being announced from the LACNIC address blocks: 19570 Unique aggregates announced from the LACNIC address blocks: 11038 LACNIC Region origin ASes present in the Internet Routing Table: 1002 LACNIC Prefixes per ASN: 19.53 LACNIC Region origin ASes announcing only one prefix: 330 LACNIC Region transit ASes present in the Internet Routing Table: 170 Average LACNIC Region AS path length visible: 4.1 Max LACNIC Region AS path length visible: 17 Number of LACNIC addresses announced to Internet: 56803328 Equivalent to 3 /8s, 98 /16s and 192 /24s Percentage of available LACNIC address space announced: 56.4 LACNIC AS Blocks 26592-26623, 27648-28671, plus ERX transfers LACNIC Address Blocks 186/8, 187/8, 189/8, 190/8, 200/8, 201/8, AfriNIC Region Analysis Summary ------------------------------- Prefixes being announced by AfriNIC Region ASes: 4103 Total AfriNIC prefixes after maximum aggregation: 1272 AfriNIC Deaggregation factor: 3.23 Prefixes being announced from the AfriNIC address blocks: 4412 Unique aggregates announced from the AfriNIC address blocks: 2035 AfriNIC Region origin ASes present in the Internet Routing Table: 260 AfriNIC Prefixes per ASN: 16.97 AfriNIC Region origin ASes announcing only one prefix: 84 AfriNIC Region transit ASes present in the Internet Routing Table: 53 Average AfriNIC Region AS path length visible: 3.9 Max AfriNIC Region AS path length visible: 13 Number of AfriNIC addresses announced to Internet: 12755200 Equivalent to 0 /8s, 194 /16s and 161 /24s Percentage of available AfriNIC address space announced: 38.0 AfriNIC AS Blocks 36864-37887 & ERX transfers AfriNIC Address Blocks 41/8, 196/8, APNIC Region per AS prefix count summary ---------------------------------------- ASN No of nets /20 equiv MaxAgg Description 4755 1639 535 179 TATA Communications formerly 17488 1392 94 101 Hathway IP Over Cable Interne 9583 1109 86 475 Sify Limited 4766 876 6407 359 Korea Telecom (KIX) 4134 839 13665 343 CHINANET-BACKBONE 23577 811 34 691 Korea Telecom (ATM-MPLS) 18101 776 161 62 Reliance Infocom Ltd Internet 4780 717 353 61 Digital United Inc. 9498 679 295 56 BHARTI BT INTERNET LTD. 4808 626 1156 138 CNCGROUP IP network: China169 Complete listing at http://thyme.apnic.net/current/data-ASnet-APNIC ARIN Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 6389 4293 3416 339 bellsouth.net, inc. 209 2942 4017 621 Qwest 6298 1997 318 731 Cox Communicatons 20115 1682 1421 712 Charter Communications 1785 1663 717 154 PaeTec Communications, Inc. 2386 1551 691 894 AT&T Data Communications Serv 4323 1519 1067 369 Time Warner Telecom 7018 1408 5794 978 AT&T WorldNet Services 11492 1212 152 11 Cable One 6478 1188 241 189 AT&T Worldnet Services Complete listing at http://thyme.apnic.net/current/data-ASnet-ARIN RIPE Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 3292 423 1777 378 TDC Tele Danmark 3301 330 1428 301 TeliaNet Sweden 30890 330 87 175 SC Kappa Invexim SRL 3215 328 2756 107 France Telecom Transpac 3320 324 7063 273 Deutsche Telekom AG 8866 321 79 22 Bulgarian Telecommunication C 8452 316 188 11 TEDATA 5462 299 794 26 Telewest Broadband 8551 287 270 37 Bezeq International 680 275 2047 265 DFN-IP service G-WiN Complete listing at http://thyme.apnic.net/current/data-ASnet-RIPE LACNIC Region per AS prefix count summary ----------------------------------------- ASN No of nets /20 equiv MaxAgg Description 8151 1412 2847 223 UniNet S.A. de C.V. 11830 668 299 9 Instituto Costarricense de El 22047 564 270 14 VTR PUNTO NET S.A. 7303 492 241 70 Telecom Argentina Stet-France 10620 433 106 62 TVCABLE BOGOTA 16814 426 27 10 NSS, S.A. 6471 420 85 48 ENTEL CHILE S.A. 11172 408 118 71 Servicios Alestra S.A de C.V 28573 351 444 22 NET Servicos de Comunicao S.A 14117 343 23 9 Telefonica del Sur S.A. Complete listing at http://thyme.apnic.net/current/data-ASnet-LACNIC AfriNIC Region per AS prefix count summary ------------------------------------------ ASN No of nets /20 equiv MaxAgg Description 24863 543 71 41 LINKdotNET AS number 20858 401 34 3 EgyNet 3741 265 855 223 The Internet Solution 2018 232 215 139 Tertiary Education Network 6713 143 135 11 Itissalat Al-MAGHRIB 5536 120 8 17 Internet Egypt Network 5713 119 555 69 Telkom SA Ltd 33776 116 6 3 Starcomms Nigeria Limited 29571 107 13 8 Ci Telecom Autonomous system 33783 91 10 9 EEPAD TISP TELECOM & INTERNET Complete listing at http://thyme.apnic.net/current/data-ASnet-AFRINIC Global Per AS prefix count summary ---------------------------------- ASN No of nets /20 equiv MaxAgg Description 6389 4293 3416 339 bellsouth.net, inc. 209 2942 4017 621 Qwest 6298 1997 318 731 Cox Communicatons 20115 1682 1421 712 Charter Communications 1785 1663 717 154 PaeTec Communications, Inc. 4755 1639 535 179 TATA Communications formerly 2386 1551 691 894 AT&T Data Communications Serv 4323 1519 1067 369 Time Warner Telecom 8151 1412 2847 223 UniNet S.A. de C.V. 7018 1408 5794 978 AT&T WorldNet Services Complete listing at http://thyme.apnic.net/current/data-ASnet Global Per AS Maximum Aggr summary ---------------------------------- ASN No of nets Net Savings Description 209 2942 2321 Qwest 1785 1663 1509 PaeTec Communications, Inc. 4755 1639 1460 TATA Communications formerly 17488 1392 1291 Hathway IP Over Cable Interne 6298 1997 1266 Cox Communicatons 11492 1212 1201 Cable One 8151 1412 1189 UniNet S.A. de C.V. 4323 1519 1150 Time Warner Telecom 18566 1052 1042 Covad Communications 6478 1188 999 AT&T Worldnet Services Complete listing at http://thyme.apnic.net/current/data-CIDRnet List of Unregistered Origin ASNs (Global) ----------------------------------------- Bad AS Designation Network Transit AS Description 16927 UNALLOCATED 12.0.252.0/23 7018 AT&T WorldNet Servic 22492 UNALLOCATED 12.2.46.0/24 1239 Sprint 15132 UNALLOCATED 12.9.150.0/24 7018 AT&T WorldNet Servic 32567 UNALLOCATED 12.14.170.0/24 7018 AT&T WorldNet Servic 13746 UNALLOCATED 12.24.56.0/24 7018 AT&T WorldNet Servic 32567 UNALLOCATED 12.25.107.0/24 7018 AT&T WorldNet Servic 26973 UNALLOCATED 12.39.152.0/24 7018 AT&T WorldNet Servic 26973 UNALLOCATED 12.39.154.0/23 7018 AT&T WorldNet Servic 26973 UNALLOCATED 12.39.159.0/24 7018 AT&T WorldNet Servic 32326 UNALLOCATED 12.40.49.0/24 3549 Global Crossing Complete listing at http://thyme.apnic.net/current/data-badAS Advertised Unallocated Addresses -------------------------------- Network Origin AS Description 24.75.116.0/22 10796 ServiceCo LLC - Road Runner 24.75.160.0/19 7843 Adelphia Corp. 24.142.40.0/21 7018 AT&T WorldNet Services 24.142.160.0/19 7018 AT&T WorldNet Services 24.246.0.0/17 7018 AT&T WorldNet Services 24.246.128.0/18 7018 AT&T WorldNet Services 62.61.220.0/24 24974 Tachyon Europe BV - Wireless 63.140.213.0/24 22555 Universal Talkware Corporatio 63.143.71.0/24 701 UUNET Technologies, Inc. 63.143.115.0/24 701 UUNET Technologies, Inc. Complete listing at http://thyme.apnic.net/current/data-add-IANA Number of prefixes announced per prefix length (Global) ------------------------------------------------------- /1:0 /2:0 /3:0 /4:0 /5:0 /6:0 /7:0 /8:18 /9:9 /10:17 /11:45 /12:147 /13:295 /14:530 /15:1062 /16:10110 /17:4400 /18:7671 /19:16306 /20:19136 /21:18667 /22:23430 /23:24514 /24:140652 /25:797 /26:967 /27:767 /28:89 /29:9 /30:1 /31:0 /32:7 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 6389 2845 4293 bellsouth.net, inc. 6298 1971 1997 Cox Communicatons 209 1702 2942 Qwest 2386 1231 1551 AT&T Data Communications Serv 17488 1199 1392 Hathway IP Over Cable Interne 11492 1188 1212 Cable One 1785 1126 1663 PaeTec Communications, Inc. 6478 1080 1188 AT&T Worldnet Services 18566 1033 1052 Covad Communications 9583 977 1109 Sify Limited Complete listing at http://thyme.apnic.net/current/data/sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 4:8 8:139 12:2163 13:2 15:22 16:3 17:5 18:13 20:35 24:1080 32:59 38:501 40:92 41:703 43:1 44:2 47:12 52:3 55:3 56:3 57:27 58:521 59:521 60:452 61:975 62:1226 63:2035 64:3218 65:2388 66:3485 67:1262 68:790 69:2328 70:853 71:172 72:2053 73:7 74:1199 75:166 76:264 77:795 78:840 79:258 80:939 81:838 82:583 83:377 84:576 85:1003 86:398 87:717 88:338 89:1361 90:21 91:1535 92:267 93:851 94:178 96:74 97:81 98:335 99:8 113:1 114:110 115:86 116:1001 117:366 118:232 119:498 120:94 121:597 122:850 123:437 124:862 125:1196 128:358 129:201 130:134 131:413 132:70 133:9 134:177 135:32 136:224 137:96 138:142 139:91 140:507 141:103 142:408 143:302 144:326 145:51 146:370 147:159 148:521 149:209 150:128 151:181 152:149 153:136 154:10 155:281 156:173 157:301 158:168 159:306 160:268 161:138 162:254 163:154 164:516 165:503 166:367 167:332 168:634 169:143 170:447 171:33 172:10 173:34 186:1 187:16 188:1 189:312 190:2226 192:5756 193:4136 194:3256 195:2583 196:997 198:3727 199:3301 200:5508 201:1436 202:7853 203:8086 204:3949 205:2140 206:2351 207:2739 208:3643 209:3420 210:2613 211:1088 212:1466 213:1631 214:176 215:50 216:4354 217:1218 218:350 219:437 220:1064 221:418 222:287 End of report

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[routing-wg]BGP Update Report
by cidr-report＠potaroo.net 26 Sep '08

26 Sep '08

BGP Update Report Interval: 25-Aug-08 -to- 25-Sep-08 (32 days) Observation Point: BGP Peering with AS2.0 TOP 20 Unstable Origin AS Rank ASN Upds % Upds/Pfx AS-Name 1 - AS9583 293291 3.5% 220.7 -- SIFY-AS-IN Sify Limited 2 - AS1803 109779 1.3% 81.6 -- ICMNET-5 - Sprint 3 - AS4538 104222 1.2% 20.7 -- ERX-CERNET-BKB China Education and Research Network Center 4 - AS5691 78349 0.9% 6026.8 -- MITRE-AS-5 - The MITRE Corporation 5 - AS8151 68816 0.8% 29.0 -- Uninet S.A. de C.V. 6 - AS9051 64130 0.8% 400.8 -- IDM Autonomous System 7 - AS6389 62409 0.7% 14.3 -- BELLSOUTH-NET-BLK - BellSouth.net Inc. 8 - AS4184 61060 0.7% 30530.0 -- STORTEK-WHQ - Storage Technology Corporation 9 - AS14593 51960 0.6% 51960.0 -- BRAND-INSTITUTE - Brand Instiute, Inc. 10 - AS209 49708 0.6% 10.4 -- ASN-QWEST - Qwest 11 - AS10396 49135 0.6% 701.9 -- COQUI-NET - DATACOM CARIBE, INC. 12 - AS4274 45008 0.5% 661.9 -- ERX-AU-NET Assumption University 13 - AS17488 42268 0.5% 28.9 -- HATHWAY-NET-AP Hathway IP Over Cable Internet 14 - AS20115 41040 0.5% 22.8 -- CHARTER-NET-HKY-NC - Charter Communications 15 - AS30890 40002 0.5% 28.6 -- EVOLVA Evolva Telecom 16 - AS11971 39566 0.5% 5652.3 -- PFIZERNET-GROTON - PFIZER INC. 17 - AS8866 38036 0.5% 117.0 -- BTC-AS Bulgarian Telecommunication Company Plc. 18 - AS18231 36518 0.4% 146.7 -- EXATT-AS-AP IOL NETCOM LTD 19 - AS7018 34799 0.4% 23.5 -- ATT-INTERNET4 - AT&T WorldNet Services 20 - AS6458 33132 0.4% 91.8 -- Telgua TOP 20 Unstable Origin AS (Updates per announced prefix) Rank ASN Upds % Upds/Pfx AS-Name 1 - AS14593 51960 0.6% 51960.0 -- BRAND-INSTITUTE - Brand Instiute, Inc. 2 - AS4184 61060 0.7% 30530.0 -- STORTEK-WHQ - Storage Technology Corporation 3 - AS8266 14927 0.2% 14927.0 -- NEXUSTEL Nexus Telecommunications 4 - AS29910 7072 0.1% 7072.0 -- IACP - INTL. ASSN OF CHIEF OF POLICEI 5 - AS38180 6550 0.1% 6550.0 -- ETPI-IDS-JOLLIBEE-AS-AP 6/Fth floor JOLLIBEE PLAZA, Emerald Ave. Ortigas Center Pasig City. 6 - AS5691 78349 0.9% 6026.8 -- MITRE-AS-5 - The MITRE Corporation 7 - AS11971 39566 0.5% 5652.3 -- PFIZERNET-GROTON - PFIZER INC. 8 - AS43299 4660 0.1% 4660.0 -- TELECONTACT-AS Telecontact Ltd. 9 - AS4557 7872 0.1% 3936.0 -- EP0-BLK-ASNBLOCK-7 - EP.NET, LLC. 10 - AS23082 19333 0.2% 3866.6 -- MPHI - Michigan Public Health Institute 11 - AS30969 26572 0.3% 3321.5 -- TAN-NET TransAfrica Networks 12 - AS44194 3184 0.0% 3184.0 -- FREIFUNK-BERLIN-AS Freifunk Berlin 13 - AS23917 2247 0.0% 2247.0 -- BRIBIE-NET-AS-AP Bribie Island Net Multihomed, Brisbane 14 - AS24491 1774 0.0% 1774.0 -- WORLDWEB-THAILAND-AS-AP Internet Service Provider Thailand 15 - AS32011 1572 0.0% 1572.0 -- JOHO-NYC - Joho Capital, LLC 16 - AS9747 11612 0.1% 1451.5 -- EZINTERNET-AS-AP EZInternet Pty Ltd 17 - AS10221 5686 0.1% 1421.5 -- HEWLETT-PACKARD Multi-homed connections to multiple ISP's providing 18 - AS25321 1247 0.0% 1247.0 -- G4S-NET GROUP 4 SECURITAS Prague 19 - AS35287 2469 0.0% 1234.5 -- BGT-NOGLIKI-AS JSC BG Telecom Nogliki 20 - AS39843 2258 0.0% 1129.0 -- RATECOM-AS Joint Stock Company "Ratecom" TOP 20 Unstable Prefixes Rank Prefix Upds % Origin AS -- AS Name 1 - 192.12.120.0/24 78240 0.9% AS5691 -- MITRE-AS-5 - The MITRE Corporation 2 - 210.214.151.0/24 61247 0.7% AS9583 -- SIFY-AS-IN Sify Limited 3 - 221.134.222.0/24 58908 0.7% AS9583 -- SIFY-AS-IN Sify Limited 4 - 194.126.143.0/24 55779 0.6% AS9051 -- IDM Autonomous System 5 - 12.8.7.0/24 51960 0.6% AS14593 -- BRAND-INSTITUTE - Brand Instiute, Inc. 6 - 210.210.112.0/24 48805 0.6% AS9583 -- SIFY-AS-IN Sify Limited 7 - 221.135.80.0/24 48067 0.5% AS9583 -- SIFY-AS-IN Sify Limited 8 - 221.135.251.0/24 42804 0.5% AS9583 -- SIFY-AS-IN Sify Limited 9 - 12.18.36.0/24 39310 0.4% AS11971 -- PFIZERNET-GROTON - PFIZER INC. 10 - 129.80.0.0/16 30747 0.3% AS4184 -- STORTEK-WHQ - Storage Technology Corporation 11 - 199.117.144.0/22 30313 0.3% AS4184 -- STORTEK-WHQ - Storage Technology Corporation 12 - 83.228.71.0/24 28667 0.3% AS8866 -- BTC-AS Bulgarian Telecommunication Company Plc. 13 - 221.128.192.0/18 28275 0.3% AS18231 -- EXATT-AS-AP IOL NETCOM LTD 14 - 72.50.96.0/20 24678 0.3% AS10396 -- COQUI-NET - DATACOM CARIBE, INC. 15 - 196.42.0.0/20 23694 0.3% AS10396 -- COQUI-NET - DATACOM CARIBE, INC. 16 - 89.38.98.0/23 15960 0.2% AS6663 -- EUROWEBRO Euroweb Romania SA 17 - 193.93.148.0/22 14927 0.2% AS8266 -- NEXUSTEL Nexus Telecommunications 18 - 86.105.182.0/24 13984 0.2% AS6663 -- EUROWEBRO Euroweb Romania SA 19 - 89.4.131.0/24 13145 0.1% AS24731 -- ASN-NESMA National Engineering Services and Marketing Company Ltd. (NESMA) 20 - 196.27.104.0/21 12894 0.1% AS30969 -- TAN-NET TransAfrica Networks Details at http://bgpupdates.potaroo.net ------------------------------------ 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

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[routing-wg]The Cidr Report
by cidr-report＠potaroo.net 26 Sep '08

26 Sep '08

This report has been generated at Fri Sep 26 21:17:13 2008 AEST. The report analyses the BGP Routing Table of AS2.0 router and generates a report on aggregation potential within the table. Check http://www.cidr-report.org for a current version of this report. Recent Table History Date Prefixes CIDR Agg 19-09-08 281956 172041 20-09-08 281868 172074 21-09-08 281827 172189 22-09-08 281819 172625 23-09-08 281367 173268 24-09-08 281992 173902 25-09-08 282130 173067 26-09-08 282212 171940 AS Summary 29495 Number of ASes in routing system 12509 Number of ASes announcing only one prefix 5018 Largest number of prefixes announced by an AS AS4538 : ERX-CERNET-BKB China Education and Research Network Center 88406272 Largest address span announced by an AS (/32s) AS721 : DISA-ASNBLK - DoD Network Information Center 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'). --- 26Sep08 --- ASnum NetsNow NetsAggr NetGain % Gain Description Table 282143 172778 109365 38.8% All ASes AS4538 5018 876 4142 82.5% ERX-CERNET-BKB China Education and Research Network Center AS6389 4295 351 3944 91.8% BELLSOUTH-NET-BLK - BellSouth.net Inc. AS209 2957 1348 1609 54.4% ASN-QWEST - Qwest AS1785 1659 159 1500 90.4% AS-PAETEC-NET - PaeTec Communications, Inc. AS4755 1646 299 1347 81.8% TATACOMM-AS TATA Communications formerly VSNL is Leading ISP AS6298 1998 732 1266 63.4% COX-PHX - Cox Communications Inc. AS17488 1388 300 1088 78.4% HATHWAY-NET-AP Hathway IP Over Cable Internet AS4323 1518 502 1016 66.9% TWTC - tw telecom holdings, inc. AS22773 987 69 918 93.0% CCINET-2 - Cox Communications Inc. AS8151 1410 576 834 59.1% Uninet S.A. de C.V. AS18566 1052 231 821 78.0% COVAD - Covad Communications Co. AS19262 953 228 725 76.1% VZGNI-TRANSIT - Verizon Internet Services Inc. AS11492 1210 487 723 59.8% CABLEONE - CABLE ONE AS2386 1556 910 646 41.5% INS-AS - AT&T Data Communications Services AS9498 680 72 608 89.4% BBIL-AP BHARTI Airtel Ltd. AS6478 1187 587 600 50.5% ATT-INTERNET3 - AT&T WorldNet Services AS18101 776 233 543 70.0% RIL-IDC Reliance Infocom Ltd Internet Data Centre, AS3356 1029 527 502 48.8% LEVEL3 Level 3 Communications AS4766 903 416 487 53.9% KIXS-AS-KR Korea Telecom AS4808 626 152 474 75.7% CHINA169-BJ CNCGROUP IP network China169 Beijing Province Network AS17676 524 64 460 87.8% GIGAINFRA BB TECHNOLOGY Corp. AS7029 538 91 447 83.1% WINDSTREAM - Windstream Communications Inc AS855 595 157 438 73.6% CANET-ASN-4 - Bell Aliant AS4134 840 402 438 52.1% CHINANET-BACKBONE No.31,Jin-rong Street AS7545 586 149 437 74.6% TPG-INTERNET-AP TPG Internet Pty Ltd AS9443 523 86 437 83.6% INTERNETPRIMUS-AS-AP Primus Telecommunications AS22047 564 127 437 77.5% VTR BANDA ANCHA S.A. AS7011 913 478 435 47.6% FRONTIER-AND-CITIZENS - Frontier Communications of America, Inc. AS7018 1429 997 432 30.2% ATT-INTERNET4 - AT&T WorldNet Services AS24560 586 156 430 73.4% AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., Telemedia Services Total 39946 11762 28184 70.6% Top 30 total Possible Bogus Routes 24.75.116.0/22 AS10796 SCRR-10796 - Road Runner HoldCo LLC 24.75.160.0/19 AS7843 ADELPHIA-AS - Road Runner HoldCo LLC 24.142.40.0/21 AS7018 ATT-INTERNET4 - AT&T WorldNet Services 24.142.160.0/19 AS7018 ATT-INTERNET4 - AT&T WorldNet Services 24.245.128.0/17 AS11492 CABLEONE - CABLE ONE 24.246.0.0/17 AS7018 ATT-INTERNET4 - AT&T WorldNet Services 24.246.128.0/18 AS7018 ATT-INTERNET4 - AT&T WorldNet Services 62.61.220.0/24 AS24974 TACHYON-EU Tachyon Europe BV - Wireless Broadband via Satellite 63.140.213.0/24 AS22555 UTC - Universal Talkware Corporation 63.143.71.0/24 AS701 UUNET - MCI Communications Services, Inc. d/b/a Verizon Business 63.143.115.0/24 AS701 UUNET - MCI Communications Services, Inc. d/b/a Verizon Business 63.143.251.0/24 AS22555 UTC - Universal Talkware Corporation 63.248.0.0/16 AS3356 LEVEL3 Level 3 Communications 64.7.112.0/21 AS6453 GLOBEINTERNET TATA Communications 64.7.120.0/21 AS6453 GLOBEINTERNET TATA Communications 64.64.159.0/24 AS32004 BIG-ASN - Business Information Group, Inc. 64.79.88.0/24 AS26096 LODDEN - Lodden Services 64.79.89.0/24 AS26096 LODDEN - Lodden Services 64.188.0.0/16 AS3356 LEVEL3 Level 3 Communications 66.11.32.0/20 AS6261 VISINET - Visionary Systems, Inc. 66.11.40.0/21 AS6261 VISINET - Visionary Systems, Inc. 66.54.91.0/24 AS30506 BLACKSUN-1 - Blacksun Technologies LLC 66.55.160.0/19 AS29994 66.180.239.0/24 AS35888 VIGNETTE - VIGNETTE CORPORATION 66.199.32.0/20 AS10397 WISP-AS - Wispnet, LLC 66.206.32.0/24 AS17787 PSEB-AS-PK Pakistan Software Export Board 66.206.33.0/24 AS17787 PSEB-AS-PK Pakistan Software Export Board 66.206.34.0/24 AS17787 PSEB-AS-PK Pakistan Software Export Board 66.206.35.0/24 AS17787 PSEB-AS-PK Pakistan Software Export Board 66.206.40.0/22 AS174 COGENT Cogent/PSI 66.206.44.0/23 AS174 COGENT Cogent/PSI 66.206.47.0/24 AS17557 PKTELECOM-AS-AP Pakistan Telecom 66.207.32.0/20 AS23011 69.71.192.0/20 AS13818 PHX-INTL-TELEPORT - Phoenix International Teleport 69.80.0.0/17 AS3043 AMPHIB-AS - Amphibian Media Corporation 75.101.64.0/20 AS7065 SONOMA - Sonoma Interconnect 80.88.0.0/21 AS33774 DJAWEB 80.88.8.0/22 AS33774 DJAWEB 80.88.10.0/24 AS33774 DJAWEB 80.88.12.0/24 AS33779 wataniya-telecom-as 91.200.192.128/25 AS44045 DIGIEF-AS Didjief internation kulinari koncept LLC 91.200.193.128/25 AS44045 DIGIEF-AS Didjief internation kulinari koncept LLC 91.200.194.128/25 AS44045 DIGIEF-AS Didjief internation kulinari koncept LLC 91.200.195.128/25 AS44045 DIGIEF-AS Didjief internation kulinari koncept LLC 91.208.229.0/24 AS44953 ISICONNEXION IsiConneXion Network 94.158.64.0/20 AS47990 95.192.0.0/16 AS12654 RIPE-NCC-RIS-AS RIPE NCC RIS project 95.255.248.0/21 AS12654 RIPE-NCC-RIS-AS RIPE NCC RIS project 137.0.0.0/13 AS721 DISA-ASNBLK - DoD Network Information Center 151.135.0.0/16 AS4768 CLIX-NZ TelstraClear Ltd 163.142.0.0/16 AS2500 WIDE-BB WIDE Project 166.63.0.0/16 AS33775 NITEL-AS 172.7.0.0/24 AS28175 172.10.1.0/30 AS18305 POSNET POSDATA Co.,Ltd 188.0.0.0/16 AS12654 RIPE-NCC-RIS-AS RIPE NCC RIS project 188.0.0.0/21 AS12654 RIPE-NCC-RIS-AS RIPE NCC RIS project 188.0.0.0/24 AS12654 RIPE-NCC-RIS-AS RIPE NCC RIS project 192.9.200.0/24 AS3602 AS3602-RTI - Rogers Telecom Inc. 192.40.105.0/24 AS12582 TSF-DATANET-NGD-AS TSF MPLS VPN Services 192.64.85.0/24 AS1759 TSF-IP-CORE TeliaSonera Finland IP Network 192.69.107.0/24 AS1759 TSF-IP-CORE TeliaSonera Finland IP Network 192.69.108.0/24 AS1759 TSF-IP-CORE TeliaSonera Finland IP Network 192.69.177.0/24 AS1759 TSF-IP-CORE TeliaSonera Finland IP Network 192.70.164.0/24 AS25689 NRCNET-AS - National Research Council of Canada 192.96.36.0/24 AS5713 SAIX-NET 192.96.37.0/24 AS10474 NETACTIVE 192.96.135.0/24 AS2018 TENET-1 192.96.136.0/23 AS2018 TENET-1 192.96.141.0/24 AS2018 TENET-1 192.96.143.0/24 AS2018 TENET-1 192.96.145.0/24 AS2018 TENET-1 192.96.177.0/24 AS6083 POSIX-AFRICA 192.101.45.0/24 AS2905 TICSA-ASN 192.101.46.0/24 AS6503 Avantel, S.A. 192.101.47.0/24 AS6503 Avantel, S.A. 192.101.64.0/21 AS702 AS702 Verizon Business EMEA - Commercial IP service provider in Europe 192.101.70.0/24 AS701 UUNET - MCI Communications Services, Inc. d/b/a Verizon Business 192.101.71.0/24 AS701 UUNET - MCI Communications Services, Inc. d/b/a Verizon Business 192.101.72.0/24 AS702 AS702 Verizon Business EMEA - Commercial IP service provider in Europe 192.101.73.0/24 AS4765 WORLDNET-AS World Net & Services Co., Ltd. 192.101.74.0/24 AS1239 SPRINTLINK - Sprint 192.122.212.0/24 AS209 ASN-QWEST - Qwest 192.124.248.0/23 AS680 DFN-IP service G-WiN 192.124.252.0/22 AS680 DFN-IP service G-WiN 192.131.233.0/24 AS6389 BELLSOUTH-NET-BLK - BellSouth.net Inc. 192.133.6.0/24 AS10282 EQUANT-CEEUR EQUANT AS for Central and Eastern Europe region 192.153.144.0/21 AS721 DISA-ASNBLK - DoD Network Information Center 192.154.32.0/19 AS81 NCREN - MCNC 192.188.208.0/20 AS721 DISA-ASNBLK - DoD Network Information Center 193.25.240.0/21 AS3209 Arcor IP-Network 193.25.246.0/24 AS3211 Arcor Data-Network 194.31.227.0/24 AS21461 TRANSFAIRNET Transfair-net GmbH Krefeld 194.246.72.0/23 AS8893 ARTFILES-AS Artfiles New Media GmbH 196.6.108.0/24 AS5713 SAIX-NET 196.10.119.0/24 AS2018 TENET-1 196.10.122.0/23 AS2018 TENET-1 196.10.251.0/24 AS2018 TENET-1 196.10.252.0/23 AS2018 TENET-1 196.10.254.0/24 AS2018 TENET-1 196.13.101.0/24 AS2018 TENET-1 196.13.102.0/23 AS2018 TENET-1 196.13.104.0/24 AS2018 TENET-1 196.13.121.0/24 AS2018 TENET-1 196.13.125.0/24 AS2018 TENET-1 196.13.126.0/24 AS2018 TENET-1 196.13.169.0/24 AS2018 TENET-1 196.13.174.0/23 AS2018 TENET-1 196.13.176.0/21 AS2018 TENET-1 196.13.192.0/22 AS2018 TENET-1 196.13.196.0/24 AS2018 TENET-1 196.201.98.0/24 AS29571 CITelecom-AS 198.23.26.0/24 AS4390 BELLATLANTIC-COM - Bell Atlantic, Inc. 198.54.82.0/24 AS2018 TENET-1 198.54.92.0/24 AS2018 TENET-1 198.54.222.0/24 AS2018 TENET-1 198.97.72.0/21 AS721 DISA-ASNBLK - DoD Network Information Center 198.97.80.0/20 AS721 DISA-ASNBLK - DoD Network Information Center 198.97.96.0/19 AS721 DISA-ASNBLK - DoD Network Information Center 198.97.240.0/20 AS721 DISA-ASNBLK - DoD Network Information Center 198.144.96.0/20 AS12185 198.161.87.0/24 AS6539 GT-BELL - Bell Canada 198.167.0.0/16 AS7456 INTERHOP - Interhop Network SERVICES Inc. 198.168.0.0/16 AS701 UUNET - MCI Communications Services, Inc. d/b/a Verizon Business 198.169.0.0/16 AS803 SASKTEL - Saskatchewan Telecommunications 198.180.198.0/24 AS23715 SEOUL-INTGW-GXS-AP Global Exchange Services 199.9.128.0/17 AS668 ASN-ASNET-NET-AS - Defense Research and Engineering Network 199.10.0.0/16 AS721 DISA-ASNBLK - DoD Network Information Center 199.114.0.0/21 AS721 DISA-ASNBLK - DoD Network Information Center 199.114.128.0/18 AS721 DISA-ASNBLK - DoD Network Information Center 199.114.130.0/24 AS6045 DDN-ASNBLK - DoD Network Information Center 199.114.131.0/24 AS6045 DDN-ASNBLK - DoD Network Information Center 199.114.132.0/24 AS6045 DDN-ASNBLK - DoD Network Information Center 199.114.134.0/24 AS3541 ITSDN-U4 - DoD Network Information Center 199.114.136.0/24 AS27044 DDN-ASNBLK1 - DoD Network Information Center 199.114.138.0/24 AS6045 DDN-ASNBLK - DoD Network Information Center 199.114.140.0/24 AS3544 ITSDN-U7 - DoD Network Information Center 199.114.142.0/24 AS6045 DDN-ASNBLK - DoD Network Information Center 199.114.144.0/24 AS6045 DDN-ASNBLK - DoD Network Information Center 199.114.148.0/24 AS6045 DDN-ASNBLK - DoD Network Information Center 199.114.150.0/24 AS6045 DDN-ASNBLK - DoD Network Information Center 199.114.152.0/24 AS27033 DDN-ASNBLK1 - DoD Network Information Center 199.114.153.0/24 AS27034 DDN-ASNBLK1 - DoD Network Information Center 199.114.154.0/24 AS1733 CENTAF-SWA - 754th Electronic Systems Group 199.114.156.0/24 AS1733 CENTAF-SWA - 754th Electronic Systems Group 199.114.160.0/24 AS1733 CENTAF-SWA - 754th Electronic Systems Group 199.121.0.0/16 AS721 DISA-ASNBLK - DoD Network Information Center 199.123.0.0/18 AS721 DISA-ASNBLK - DoD Network Information Center 199.123.16.0/20 AS721 DISA-ASNBLK - DoD Network Information Center 199.123.80.0/21 AS721 DISA-ASNBLK - DoD Network Information Center 199.189.32.0/19 AS7332 IQUEST-AS - IQuest Internet 199.202.0.0/16 AS701 UUNET - MCI Communications Services, Inc. d/b/a Verizon Business 199.246.116.0/24 AS813 UUNET-CANADA - MCI Communications Services, Inc. d/b/a Verizon Business 202.58.113.0/24 AS19161 INNOCOM-TELECOM - INNOCOM TELECOM 202.73.144.0/20 AS4788 TMNET-AS-AP TM Net, Internet Service Provider 202.80.192.0/20 AS2706 HKSUPER-HK-AP Pacific Internet (Hong Kong) Limited 202.86.252.0/22 AS4748 RESOLINK-AS-AP Resources Link Network Limited 202.86.252.0/24 AS9304 HUTCHISON-AS-AP Hutchison Global Communications 202.86.253.0/24 AS9304 HUTCHISON-AS-AP Hutchison Global Communications 202.86.254.0/24 AS9304 HUTCHISON-AS-AP Hutchison Global Communications 202.86.255.0/24 AS9304 HUTCHISON-AS-AP Hutchison Global Communications 202.94.1.0/24 AS4808 CHINA169-BJ CNCGROUP IP network China169 Beijing Province Network 202.94.70.0/24 AS9837 POWERTEL-AP Powertel Ltd 202.124.195.0/24 AS17557 PKTELECOM-AS-AP Pakistan Telecom 202.136.254.0/24 AS4808 CHINA169-BJ CNCGROUP IP network China169 Beijing Province Network 202.136.255.0/24 AS4808 CHINA169-BJ CNCGROUP IP network China169 Beijing Province Network 202.181.32.0/24 AS4645 ASN-HKNET-AP HKNet Co. Ltd 203.12.45.0/24 AS4854 NETSPACE-AS-AP Netspace Online Systems 203.62.0.0/17 AS7575 AARNET-AS-AP Australian Academic and Reasearch Network (AARNet) 203.78.48.0/20 AS9299 IPG-AS-AP Philippine Long Distance Telephone Company 203.89.139.0/24 AS17911 BRAINPK-AS-AP Brain Telecommunication Ltd. 203.111.192.0/20 AS7473 SINGTEL-AS-AP Singapore Telecom 203.112.111.0/24 AS7474 OPTUSCOM-AS01-AU SingTel Optus Pty Ltd 203.112.113.0/24 AS7474 OPTUSCOM-AS01-AU SingTel Optus Pty Ltd 203.112.114.0/24 AS4802 ASN-IINET iiNet Limited 203.112.116.0/24 AS7474 OPTUSCOM-AS01-AU SingTel Optus Pty Ltd 203.112.117.0/24 AS7474 OPTUSCOM-AS01-AU SingTel Optus Pty Ltd 203.112.118.0/24 AS7474 OPTUSCOM-AS01-AU SingTel Optus Pty Ltd 203.112.119.0/24 AS7474 OPTUSCOM-AS01-AU SingTel Optus Pty Ltd 203.112.120.0/24 AS7474 OPTUSCOM-AS01-AU SingTel Optus Pty Ltd 203.112.121.0/24 AS7474 OPTUSCOM-AS01-AU SingTel Optus Pty Ltd 203.112.127.0/24 AS7474 OPTUSCOM-AS01-AU SingTel Optus Pty Ltd 203.128.128.0/19 AS4134 CHINANET-BACKBONE No.31,Jin-rong Street 203.128.128.0/24 AS23849 CNNIC-NET263-AP Beijing Capital-online science development Co.,Ltd. 203.160.110.0/23 AS7643 VNN-AS-AP Vietnam Posts and Telecommunications (VNPT) 204.9.216.0/23 AS6389 BELLSOUTH-NET-BLK - BellSouth.net Inc. 204.9.217.0/24 AS4323 TWTC - tw telecom holdings, inc. 204.9.218.0/23 AS6389 BELLSOUTH-NET-BLK - BellSouth.net Inc. 204.13.140.0/22 AS7270 NET2PHONE - Net2Phone Corp. 204.16.120.0/23 AS12077 204.16.122.0/23 AS12077 204.19.14.0/23 AS577 BACOM - Bell Canada 204.48.58.0/24 AS4323 TWTC - tw telecom holdings, inc. 204.48.60.0/24 AS4323 TWTC - tw telecom holdings, inc. 204.154.125.0/24 AS3952 TELLABS-ASN - TELLABS Operations, Inc. 204.154.126.0/24 AS3952 TELLABS-ASN - TELLABS Operations, Inc. 204.154.127.0/24 AS3952 TELLABS-ASN - TELLABS Operations, Inc. 205.144.160.0/20 AS7296 ALCHEMYNET - Alchemy Communications, Inc. 205.150.0.0/15 AS701 UUNET - MCI Communications Services, Inc. d/b/a Verizon Business 206.162.224.0/19 AS23464 ILCSNET - Interlink Computer Services 206.180.240.0/20 AS12083 KNOLOGY-NET - Knology Holdings 206.220.240.0/24 AS10764 STARTAP - National Center for Supercomputing Applications 206.220.240.64/26 AS22335 MREN - Metropolitan Research and Education Network 206.220.240.128/25 AS10764 STARTAP - National Center for Supercomputing Applications 206.220.240.220/32 AS10764 STARTAP - National Center for Supercomputing Applications 206.220.241.0/24 AS10764 STARTAP - National Center for Supercomputing Applications 207.98.209.0/24 AS701 UUNET - MCI Communications Services, Inc. d/b/a Verizon Business 207.98.223.0/24 AS701 UUNET - MCI Communications Services, Inc. d/b/a Verizon Business 207.191.128.0/19 AS10887 BPSI-AS - BPSI Internet Services 207.204.168.0/24 AS15150 BELLTECH-AS - BELLWETHER TECHNOLOGY CORPORATION 207.204.222.0/24 AS22773 CCINET-2 - Cox Communications Inc. 207.231.96.0/19 AS11194 NUNETPA - NuNet Inc. 208.38.192.0/21 AS14237 BEAMSPEED1 - Beamspeed 208.38.202.0/24 AS14237 BEAMSPEED1 - Beamspeed 208.38.203.0/24 AS14237 BEAMSPEED1 - Beamspeed 208.38.204.0/22 AS14237 BEAMSPEED1 - Beamspeed 209.54.93.0/24 AS22773 CCINET-2 - Cox Communications Inc. 209.54.111.0/24 AS22773 CCINET-2 - Cox Communications Inc. 209.54.123.0/24 AS6062 NETPLEX - NETPLEX 209.54.240.0/21 AS10887 BPSI-AS - BPSI Internet Services 209.74.96.0/19 AS10912 INTERNAP-BLK - Internap Network Services Corporation 209.140.90.0/24 AS14461 NTSL - NET SOLUTIONS 209.140.224.0/21 AS10573 WEBNEXUS - WebNexus Communications Inc. 209.140.234.0/24 AS10573 WEBNEXUS - WebNexus Communications Inc. 209.140.235.0/24 AS10573 WEBNEXUS - WebNexus Communications Inc. 209.140.236.0/24 AS10573 WEBNEXUS - WebNexus Communications Inc. 209.140.237.0/24 AS10573 WEBNEXUS - WebNexus Communications Inc. 209.140.238.0/24 AS10573 WEBNEXUS - WebNexus Communications Inc. 209.140.239.0/24 AS10573 WEBNEXUS - WebNexus Communications Inc. 209.141.16.0/21 AS10573 WEBNEXUS - WebNexus Communications Inc. 209.141.48.0/22 AS14461 NTSL - NET SOLUTIONS 209.145.192.0/18 AS3043 AMPHIB-AS - Amphibian Media Corporation 210.5.128.0/20 AS4837 CHINA169-BACKBONE CNCGROUP China169 Backbone 212.75.192.0/19 AS39927 ELIGHT-AS E-Light-Telecom 216.37.114.0/23 AS3549 GBLX Global Crossing Ltd. 216.37.120.0/23 AS13377 216.59.0.0/17 AS3356 LEVEL3 Level 3 Communications 216.99.16.0/24 AS6395 LVLT-6395 - Level 3 Communications, Inc. 216.99.20.0/24 AS6395 LVLT-6395 - Level 3 Communications, Inc. 216.162.96.0/19 AS7393 CYBERCON - CYBERCON, INC. 216.172.198.0/24 AS22773 CCINET-2 - Cox Communications Inc. 216.172.199.0/24 AS22773 CCINET-2 - Cox Communications Inc. 216.210.86.0/24 AS577 BACOM - Bell Canada 216.229.51.0/24 AS15211 216.240.240.0/24 AS7018 ATT-INTERNET4 - AT&T WorldNet Services 216.240.241.0/24 AS7018 ATT-INTERNET4 - AT&T WorldNet Services 216.240.242.0/24 AS7018 ATT-INTERNET4 - AT&T WorldNet Services 216.251.207.0/24 AS1239 SPRINTLINK - Sprint 217.78.71.0/24 AS12491 IPPLANET-AS IPPlanet 217.78.72.0/24 AS12491 IPPLANET-AS IPPlanet 217.78.73.0/24 AS12491 IPPLANET-AS IPPlanet 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

[routing-wg]RE: a (perhaps) naive question...
by Paul Francis 24 Sep '08

24 Sep '08

Actually, never mind, I got the answer (and feel a bit stupid for not knowing it in the first place). PF > -----Original Message----- > From: Paul Francis > Sent: Wednesday, September 24, 2008 3:16 PM > To: Routing WG > Subject: a (perhaps) naive question... > > > > I was wondering the other day why we don't do aggregating in > BGP along the lines of registry assignments. For instance, > what stops the set of ISPs within Europe from from taking the > 15 or 20 prefixes given to RIPE by IANA, and collectively > aggregating those prefixes when advertising to non-RIPE ISPs? > It seems to me that they could advertise all of their AS#'s > as a huge AS-set for these prefixes. > > Is there a technical issue that prevents this, or does the > organizational effort needed simply outweigh the benefit that > would accrue? > > PF >

1 0

[routing-wg]New AS Number block allocated to the RIPE NCC
by Alex le Heux 24 Sep '08

24 Sep '08

Dear Colleagues, The RIPE NCC received the AS Number Block 48128 - 49151 from the IANA in September 2008. You may want to update your records accordingly. Best regards, Alex Le Heux RIPE NCC

2 1

[routing-wg]Request for references to recent studies on deployment of route flap damping
by Benno Overeinder 23 Sep '08

23 Sep '08

Hi, For some modeling and simulation work, we are interested in recent studies on the deployment of route flap damping. For example, similar to the study performed by Greg Hankins from Force10 and others, whom have presented survey results about BGP usage on RIPE56 (http://www.ripe.net/ripe/meetings/ripe-56/presentations/eix/Hankins-Peering…) Unfortunately, route flap damping was not addressed in this study. Are there any large carrier networks (tier 1 and large tier 2 networks) configured with route flap damping? Are there any references to recent studies on the deployment of route flap damping by network operators? Thanks, -- Benno Overeinder P.S. Similar message has been sent to IDR email list of the IETF. Sorry for duplicates. -- Benno J. Overeinder NLnet Labs http://www.nlnetlabs.nl/

1 0

[routing-wg]Weekly Routing Table Report
by Routing Analysis Role Account 19 Sep '08

19 Sep '08

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 historical data, please see http://thyme.apnic.net. If you have any comments please contact Philip Smith <pfs(a)cisco.com>. Routing Table Report 04:00 +10GMT Sat 20 Sep, 2008 Report Website: http://thyme.apnic.net Detailed Analysis: http://thyme.apnic.net/current/ Analysis Summary ---------------- BGP routing table entries examined: 269427 Prefixes after maximum aggregation: 129901 Deaggregation factor: 2.07 Unique aggregates announced to Internet: 131012 Total ASes present in the Internet Routing Table: 29274 Prefixes per ASN: 9.20 Origin-only ASes present in the Internet Routing Table: 25443 Origin ASes announcing only one prefix: 12385 Transit ASes present in the Internet Routing Table: 3831 Transit-only ASes present in the Internet Routing Table: 82 Average AS path length visible in the Internet Routing Table: 3.6 Max AS path length visible: 26 Max AS path prepend of ASN ( 3816) 15 Prefixes from unregistered ASNs in the Routing Table: 558 Unregistered ASNs in the Routing Table: 209 Number of 32-bit ASNs allocated by the RIRs: 60 Prefixes from 32-bit ASNs in the Routing Table: 8 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 755 Number of addresses announced to Internet: 1921880352 Equivalent to 114 /8s, 141 /16s and 145 /24s Percentage of available address space announced: 51.9 Percentage of allocated address space announced: 63.0 Percentage of available address space allocated: 82.3 Percentage of address space in use by end-sites: 73.6 Total number of prefixes smaller than registry allocations: 132145 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 62233 Total APNIC prefixes after maximum aggregation: 22899 APNIC Deaggregation factor: 2.72 Prefixes being announced from the APNIC address blocks: 59152 Unique aggregates announced from the APNIC address blocks: 26429 APNIC Region origin ASes present in the Internet Routing Table: 3387 APNIC Prefixes per ASN: 17.46 APNIC Region origin ASes announcing only one prefix: 905 APNIC Region transit ASes present in the Internet Routing Table: 537 Average APNIC Region AS path length visible: 3.5 Max APNIC Region AS path length visible: 18 Number of APNIC addresses announced to Internet: 376338720 Equivalent to 22 /8s, 110 /16s and 121 /24s Percentage of available APNIC address space announced: 80.1 APNIC AS Blocks 4608-4864, 7467-7722, 9216-10239, 17408-18431 (pre-ERX allocations) 23552-24575, 37888-38911, 45056-46079 APNIC Address Blocks 58/8, 59/8, 60/8, 61/8, 112/8, 113/8, 114/8, 115/8, 116/8, 117/8, 118/8, 119/8, 120/8, 121/8, 122/8, 123/8, 124/8, 125/8, 126/8, 202/8, 203/8, 210/8, 211/8, 218/8, 219/8, 220/8, 221/8, 222/8, ARIN Region Analysis Summary ---------------------------- Prefixes being announced by ARIN Region ASes: 122394 Total ARIN prefixes after maximum aggregation: 64619 ARIN Deaggregation factor: 1.89 Prefixes being announced from the ARIN address blocks: 91649 Unique aggregates announced from the ARIN address blocks: 35095 ARIN Region origin ASes present in the Internet Routing Table: 12444 ARIN Prefixes per ASN: 7.36 ARIN Region origin ASes announcing only one prefix: 4804 ARIN Region transit ASes present in the Internet Routing Table: 1200 Average ARIN Region AS path length visible: 3.3 Max ARIN Region AS path length visible: 16 Number of ARIN addresses announced to Internet: 364358112 Equivalent to 21 /8s, 183 /16s and 169 /24s Percentage of available ARIN address space announced: 74.9 ARIN AS Blocks 1-1876, 1902-2042, 2044-2046, 2048-2106 (pre-ERX allocations) 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, 29696-30719, 31744-33791 35840-36863, 39936-40959, 46080-47103 ARIN Address Blocks 24/8, 63/8, 64/8, 65/8, 66/8, 67/8, 68/8, 69/8, 70/8, 71/8, 72/8, 73/8, 74/8, 75/8, 76/8, 96/8, 97/8, 98/8, 99/8, 173/8, 174/8, 199/8, 204/8, 205/8, 206/8, 207/8, 208/8, 209/8, 216/8, RIPE Region Analysis Summary ---------------------------- Prefixes being announced by RIPE Region ASes: 58324 Total RIPE prefixes after maximum aggregation: 35258 RIPE Deaggregation factor: 1.65 Prefixes being announced from the RIPE address blocks: 53463 Unique aggregates announced from the RIPE address blocks: 35860 RIPE Region origin ASes present in the Internet Routing Table: 11903 RIPE Prefixes per ASN: 4.49 RIPE Region origin ASes announcing only one prefix: 6267 RIPE Region transit ASes present in the Internet Routing Table: 1815 Average RIPE Region AS path length visible: 4.0 Max RIPE Region AS path length visible: 26 Number of RIPE addresses announced to Internet: 372326720 Equivalent to 22 /8s, 49 /16s and 65 /24s Percentage of available RIPE address space announced: 85.4 RIPE AS Blocks 1877-1901, 2043, 2047, 2107-2136, 2585-2614 (pre-ERX allocations) 2773-2822, 2830-2879, 3154-3353, 5377-5631 6656-6911, 8192-9215, 12288-13311, 15360-16383 20480-21503, 24576-25599, 28672-29695 30720-31743, 33792-35839, 38912-39935 40960-45055, 47104-49151 RIPE Address Blocks 62/8, 77/8, 78/8, 79/8, 80/8, 81/8, 82/8, 83/8, 84/8, 85/8, 86/8, 87/8, 88/8, 89/8, 90/8, 91/8, 92/8, 93/8, 94/8, 95/8, 193/8, 194/8, 195/8, 212/8, 213/8, 217/8, LACNIC Region Analysis Summary ------------------------------ Prefixes being announced by LACNIC Region ASes: 21824 Total LACNIC prefixes after maximum aggregation: 5394 LACNIC Deaggregation factor: 4.05 Prefixes being announced from the LACNIC address blocks: 20024 Unique aggregates announced from the LACNIC address blocks: 11116 LACNIC Region origin ASes present in the Internet Routing Table: 998 LACNIC Prefixes per ASN: 20.06 LACNIC Region origin ASes announcing only one prefix: 329 LACNIC Region transit ASes present in the Internet Routing Table: 172 Average LACNIC Region AS path length visible: 4.1 Max LACNIC Region AS path length visible: 21 Number of LACNIC addresses announced to Internet: 56720896 Equivalent to 3 /8s, 97 /16s and 126 /24s Percentage of available LACNIC address space announced: 56.3 LACNIC AS Blocks 26592-26623, 27648-28671, plus ERX transfers LACNIC Address Blocks 186/8, 187/8, 189/8, 190/8, 200/8, 201/8, AfriNIC Region Analysis Summary ------------------------------- Prefixes being announced by AfriNIC Region ASes: 4094 Total AfriNIC prefixes after maximum aggregation: 1267 AfriNIC Deaggregation factor: 3.23 Prefixes being announced from the AfriNIC address blocks: 4413 Unique aggregates announced from the AfriNIC address blocks: 2040 AfriNIC Region origin ASes present in the Internet Routing Table: 257 AfriNIC Prefixes per ASN: 17.17 AfriNIC Region origin ASes announcing only one prefix: 80 AfriNIC Region transit ASes present in the Internet Routing Table: 54 Average AfriNIC Region AS path length visible: 3.9 Max AfriNIC Region AS path length visible: 16 Number of AfriNIC addresses announced to Internet: 12729088 Equivalent to 0 /8s, 194 /16s and 59 /24s Percentage of available AfriNIC address space announced: 37.9 AfriNIC AS Blocks 36864-37887 & ERX transfers AfriNIC Address Blocks 41/8, 196/8, APNIC Region per AS prefix count summary ---------------------------------------- ASN No of nets /20 equiv MaxAgg Description 4755 1721 538 181 Videsh Sanchar Nigam Ltd. Aut 17488 1384 94 101 Hathway IP Over Cable Interne 9583 1107 86 472 Sify Limited 4766 875 6407 359 Korea Telecom (KIX) 4134 842 13651 345 CHINANET-BACKBONE 23577 819 35 695 Korea Telecom (ATM-MPLS) 18101 766 152 51 Reliance Infocom Ltd Internet 4780 715 353 61 Digital United Inc. 9498 677 291 54 BHARTI BT INTERNET LTD. 4808 629 1156 138 CNCGROUP IP network: China169 Complete listing at http://thyme.apnic.net/current/data-ASnet-APNIC ARIN Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 6389 4292 3416 339 bellsouth.net, inc. 209 2927 4001 618 Qwest 6298 1980 316 736 Cox Communicatons 20115 1689 1428 713 Charter Communications 1785 1656 710 156 AppliedTheory Corporation 2386 1550 691 892 AT&T Data Communications Serv 4323 1516 1065 368 Time Warner Telecom 7018 1402 5802 973 AT&T WorldNet Services 11492 1217 152 11 Cable One 6478 1169 241 185 AT&T Worldnet Services Complete listing at http://thyme.apnic.net/current/data-ASnet-ARIN RIPE Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 3292 421 1777 378 TDC Tele Danmark 3301 332 1444 303 TeliaNet Sweden 30890 329 87 175 SC Kappa Invexim SRL 3215 327 2756 106 France Telecom Transpac 3320 324 7063 273 Deutsche Telekom AG 8866 319 77 21 Bulgarian Telecommunication C 8452 316 188 11 TEDATA 5462 296 794 27 Telewest Broadband 8551 287 270 37 Bezeq International 680 275 2047 265 DFN-IP service G-WiN Complete listing at http://thyme.apnic.net/current/data-ASnet-RIPE LACNIC Region per AS prefix count summary ----------------------------------------- ASN No of nets /20 equiv MaxAgg Description 8151 1739 2877 226 UniNet S.A. de C.V. 11830 668 299 9 Instituto Costarricense de El 22047 564 270 14 VTR PUNTO NET S.A. 7303 490 241 70 Telecom Argentina Stet-France 10620 429 105 60 TVCABLE BOGOTA 16814 426 27 10 NSS, S.A. 6471 420 85 48 ENTEL CHILE S.A. 11172 409 118 72 Servicios Alestra S.A de C.V 28573 351 443 28 NET Servicos de Comunicao S.A 14117 345 23 9 Telefonica del Sur S.A. Complete listing at http://thyme.apnic.net/current/data-ASnet-LACNIC AfriNIC Region per AS prefix count summary ------------------------------------------ ASN No of nets /20 equiv MaxAgg Description 24863 516 67 32 LINKdotNET AS number 20858 403 34 3 EgyNet 3741 265 855 223 The Internet Solution 2018 232 215 139 Tertiary Education Network 6713 143 135 11 Itissalat Al-MAGHRIB 33783 137 10 13 EEPAD TISP TELECOM & INTERNET 5536 120 8 17 Internet Egypt Network 5713 118 555 68 Telkom SA Ltd 33776 115 6 3 Starcomms Nigeria Limited 29571 107 13 8 Ci Telecom Autonomous system Complete listing at http://thyme.apnic.net/current/data-ASnet-AFRINIC Global Per AS prefix count summary ---------------------------------- ASN No of nets /20 equiv MaxAgg Description 6389 4292 3416 339 bellsouth.net, inc. 209 2927 4001 618 Qwest 6298 1980 316 736 Cox Communicatons 8151 1739 2877 226 UniNet S.A. de C.V. 4755 1721 538 181 Videsh Sanchar Nigam Ltd. Aut 20115 1689 1428 713 Charter Communications 1785 1656 710 156 AppliedTheory Corporation 2386 1550 691 892 AT&T Data Communications Serv 4323 1516 1065 368 Time Warner Telecom 7018 1402 5802 973 AT&T WorldNet Services Complete listing at http://thyme.apnic.net/current/data-ASnet Global Per AS Maximum Aggr summary ---------------------------------- ASN No of nets Net Savings Description 209 2927 2309 Qwest 4755 1721 1540 Videsh Sanchar Nigam Ltd. Aut 8151 1739 1513 UniNet S.A. de C.V. 1785 1656 1500 AppliedTheory Corporation 17488 1384 1283 Hathway IP Over Cable Interne 6298 1980 1244 Cox Communicatons 11492 1217 1206 Cable One 4323 1516 1148 Time Warner Telecom 18566 1049 1039 Covad Communications 6478 1169 984 AT&T Worldnet Services Complete listing at http://thyme.apnic.net/current/data-CIDRnet List of Unregistered Origin ASNs (Global) ----------------------------------------- Bad AS Designation Network Transit AS Description 16927 UNALLOCATED 12.0.252.0/23 7018 AT&T WorldNet Servic 22492 UNALLOCATED 12.2.46.0/24 7018 AT&T WorldNet Servic 15132 UNALLOCATED 12.9.150.0/24 7018 AT&T WorldNet Servic 32567 UNALLOCATED 12.14.170.0/24 7018 AT&T WorldNet Servic 13632 UNALLOCATED 12.20.55.0/24 6517 Yipes Communications 13746 UNALLOCATED 12.24.56.0/24 7018 AT&T WorldNet Servic 32567 UNALLOCATED 12.25.107.0/24 7018 AT&T WorldNet Servic 13632 UNALLOCATED 12.31.25.0/24 6517 Yipes Communications 26973 UNALLOCATED 12.39.152.0/24 7018 AT&T WorldNet Servic 26973 UNALLOCATED 12.39.154.0/23 7018 AT&T WorldNet Servic Complete listing at http://thyme.apnic.net/current/data-badAS Advertised Unallocated Addresses -------------------------------- Network Origin AS Description 24.75.116.0/22 10796 ServiceCo LLC - Road Runner 24.75.160.0/19 7843 Adelphia Corp. 24.142.40.0/21 7018 AT&T WorldNet Services 24.142.160.0/19 7018 AT&T WorldNet Services 24.246.0.0/17 7018 AT&T WorldNet Services 24.246.128.0/18 7018 AT&T WorldNet Services 62.61.220.0/24 24974 Tachyon Europe BV - Wireless 63.140.213.0/24 22555 Universal Talkware Corporatio 63.143.71.0/24 701 UUNET Technologies, Inc. 63.143.115.0/24 701 UUNET Technologies, Inc. Complete listing at http://thyme.apnic.net/current/data-add-IANA Number of prefixes announced per prefix length (Global) ------------------------------------------------------- /1:0 /2:0 /3:0 /4:0 /5:0 /6:0 /7:0 /8:19 /9:9 /10:17 /11:45 /12:147 /13:294 /14:529 /15:1072 /16:10090 /17:4390 /18:7733 /19:16281 /20:19082 /21:18612 /22:23366 /23:24446 /24:140670 /25:791 /26:968 /27:760 /28:89 /29:9 /30:1 /31:0 /32:7 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 6389 2846 4292 bellsouth.net, inc. 6298 1955 1980 Cox Communicatons 209 1690 2927 Qwest 2386 1231 1550 AT&T Data Communications Serv 11492 1193 1217 Cable One 17488 1191 1384 Hathway IP Over Cable Interne 1785 1125 1656 AppliedTheory Corporation 6478 1062 1169 AT&T Worldnet Services 4755 1057 1721 Videsh Sanchar Nigam Ltd. Aut 18566 1030 1049 Covad Communications Complete listing at http://thyme.apnic.net/current/data/sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 4:8 8:139 12:2145 13:2 15:20 16:3 17:5 18:13 20:35 24:1087 32:59 38:494 40:91 41:723 43:1 44:2 47:12 52:3 55:3 56:3 57:26 58:527 59:520 60:451 61:950 62:1224 63:2033 64:3215 65:2381 66:3478 67:1243 68:780 69:2308 70:848 71:171 72:2026 73:7 74:1183 75:166 76:265 77:780 78:831 79:256 80:948 81:852 82:584 83:372 84:577 85:1018 86:399 87:713 88:336 89:1354 90:21 91:1497 92:264 93:836 94:147 96:65 97:80 98:321 99:8 114:105 115:47 116:987 117:365 118:229 119:500 120:86 121:593 122:853 123:443 124:857 125:1194 128:357 129:201 130:134 131:411 132:70 133:9 134:178 135:32 136:223 137:96 138:142 139:92 140:503 141:102 142:408 143:300 144:325 145:51 146:370 147:156 148:516 149:209 150:128 151:181 152:147 153:136 154:10 155:281 156:175 157:299 158:170 159:300 160:275 161:137 162:255 163:150 164:515 165:499 166:367 167:331 168:631 169:143 170:444 171:33 172:10 173:33 186:1 187:10 188:1 189:608 190:2262 192:5751 193:4144 194:3259 195:2579 196:996 198:3724 199:3297 200:5566 201:1505 202:7851 203:8093 204:3946 205:2136 206:2356 207:2731 208:3600 209:3411 210:2604 211:1088 212:1453 213:1622 214:178 215:50 216:4357 217:1213 218:345 219:437 220:1064 221:415 222:314 End of report

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[routing-wg]BGP Update Report
by cidr-report＠potaroo.net 19 Sep '08

19 Sep '08

BGP Update Report Interval: 18-Aug-08 -to- 18-Sep-08 (32 days) Observation Point: BGP Peering with AS2.0 TOP 20 Unstable Origin AS Rank ASN Upds % Upds/Pfx AS-Name 1 - AS9583 301731 3.8% 226.5 -- SIFY-AS-IN Sify Limited 2 - AS1803 126042 1.6% 94.9 -- ICMNET-5 - Sprint 3 - AS4538 107539 1.3% 21.4 -- ERX-CERNET-BKB China Education and Research Network Center 4 - AS5691 77600 1.0% 5969.2 -- MITRE-AS-5 - The MITRE Corporation 5 - AS8151 76788 1.0% 31.8 -- Uninet S.A. de C.V. 6 - AS6389 67460 0.8% 15.5 -- BELLSOUTH-NET-BLK - BellSouth.net Inc. 7 - AS9051 65154 0.8% 407.2 -- IDM Autonomous System 8 - AS209 51813 0.7% 10.8 -- ASN-QWEST - Qwest 9 - AS14593 50458 0.6% 50458.0 -- BRAND-INSTITUTE - Brand Instiute, Inc. 10 - AS10396 46699 0.6% 667.1 -- COQUI-NET - DATACOM CARIBE, INC. 11 - AS17488 44961 0.6% 30.8 -- HATHWAY-NET-AP Hathway IP Over Cable Internet 12 - AS4184 43385 0.5% 21692.5 -- STORTEK-WHQ - Storage Technology Corporation 13 - AS8866 39604 0.5% 123.0 -- BTC-AS Bulgarian Telecommunication Company Plc. 14 - AS20115 38076 0.5% 21.4 -- CHARTER-NET-HKY-NC - Charter Communications 15 - AS18231 36058 0.5% 146.0 -- EXATT-AS-AP IOL NETCOM LTD 16 - AS7018 35690 0.5% 24.2 -- ATT-INTERNET4 - AT&T WorldNet Services 17 - AS6663 35173 0.4% 286.0 -- EUROWEBRO Euroweb Romania SA 18 - AS9198 34983 0.4% 152.1 -- KAZTELECOM-AS Kazakhtelecom Corporate Sales Administration 19 - AS4755 33910 0.4% 19.5 -- TATACOMM-AS TATA Communications formerly VSNL is Leading ISP 20 - AS6458 31107 0.4% 70.2 -- Telgua TOP 20 Unstable Origin AS (Updates per announced prefix) Rank ASN Upds % Upds/Pfx AS-Name 1 - AS14593 50458 0.6% 50458.0 -- BRAND-INSTITUTE - Brand Instiute, Inc. 2 - AS4184 43385 0.5% 21692.5 -- STORTEK-WHQ - Storage Technology Corporation 3 - AS8266 9569 0.1% 9569.0 -- NEXUSTEL Nexus Telecommunications 4 - AS29910 8235 0.1% 8235.0 -- IACP - INTL. ASSN OF CHIEF OF POLICEI 5 - AS5691 77600 1.0% 5969.2 -- MITRE-AS-5 - The MITRE Corporation 6 - AS38180 5727 0.1% 5727.0 -- ETPI-IDS-JOLLIBEE-AS-AP 6/Fth floor JOLLIBEE PLAZA, Emerald Ave. Ortigas Center Pasig City. 7 - AS43299 4606 0.1% 4606.0 -- TELECONTACT-AS Telecontact Ltd. 8 - AS4557 7873 0.1% 3936.5 -- EP0-BLK-ASNBLOCK-7 - EP.NET, LLC. 9 - AS23082 18900 0.2% 3780.0 -- MPHI - Michigan Public Health Institute 10 - AS11971 21651 0.3% 3093.0 -- PFIZERNET-GROTON - PFIZER INC. 11 - AS30969 23119 0.3% 2311.9 -- TAN-NET TransAfrica Networks 12 - AS23917 2160 0.0% 2160.0 -- BRIBIE-NET-AS-AP Bribie Island Net Multihomed, Brisbane 13 - AS24491 1774 0.0% 1774.0 -- WORLDWEB-THAILAND-AS-AP Internet Service Provider Thailand 14 - AS44194 1590 0.0% 1590.0 -- FREIFUNK-BERLIN-AS Freifunk Berlin 15 - AS32011 1577 0.0% 1577.0 -- JOHO-NYC - Joho Capital, LLC 16 - AS9747 12268 0.1% 1533.5 -- EZINTERNET-AS-AP EZInternet Pty Ltd 17 - AS25321 1249 0.0% 1249.0 -- G4S-NET GROUP 4 SECURITAS Prague 18 - AS26276 5529 0.1% 1105.8 -- TIMKEN-USA - The Timken Company 19 - AS39843 2156 0.0% 1078.0 -- RATECOM-AS Joint Stock Company "Ratecom" 20 - AS3944 4275 0.1% 1068.8 -- PARTAN-LAB - Partan & Partan TOP 20 Unstable Prefixes Rank Prefix Upds % Origin AS -- AS Name 1 - 192.12.120.0/24 77527 0.9% AS5691 -- MITRE-AS-5 - The MITRE Corporation 2 - 221.134.222.0/24 59162 0.7% AS9583 -- SIFY-AS-IN Sify Limited 3 - 194.126.143.0/24 57735 0.7% AS9051 -- IDM Autonomous System 4 - 210.214.151.0/24 55122 0.6% AS9583 -- SIFY-AS-IN Sify Limited 5 - 12.8.7.0/24 50458 0.6% AS14593 -- BRAND-INSTITUTE - Brand Instiute, Inc. 6 - 210.210.112.0/24 44322 0.5% AS9583 -- SIFY-AS-IN Sify Limited 7 - 221.135.80.0/24 44047 0.5% AS9583 -- SIFY-AS-IN Sify Limited 8 - 221.135.251.0/24 42813 0.5% AS9583 -- SIFY-AS-IN Sify Limited 9 - 83.228.71.0/24 30651 0.4% AS8866 -- BTC-AS Bulgarian Telecommunication Company Plc. 10 - 221.128.192.0/18 27373 0.3% AS18231 -- EXATT-AS-AP IOL NETCOM LTD 11 - 72.50.96.0/20 24360 0.3% AS10396 -- COQUI-NET - DATACOM CARIBE, INC. 12 - 199.117.144.0/22 21694 0.2% AS4184 -- STORTEK-WHQ - Storage Technology Corporation 13 - 129.80.0.0/16 21691 0.2% AS4184 -- STORTEK-WHQ - Storage Technology Corporation 14 - 12.18.36.0/24 21381 0.2% AS11971 -- PFIZERNET-GROTON - PFIZER INC. 15 - 196.42.0.0/20 21180 0.2% AS10396 -- COQUI-NET - DATACOM CARIBE, INC. 16 - 89.38.98.0/23 18104 0.2% AS6663 -- EUROWEBRO Euroweb Romania SA 17 - 86.105.182.0/24 13985 0.2% AS6663 -- EUROWEBRO Euroweb Romania SA 18 - 195.251.5.0/24 12799 0.1% AS5408 -- GR-NET Greek Research & Technology Network, http://www.grnet.gr 19 - 89.4.131.0/24 12704 0.1% AS24731 -- ASN-NESMA National Engineering Services and Marketing Company Ltd. (NESMA) 20 - 205.162.132.0/23 12495 0.1% AS23541 -- Scarlet B.V. Details at http://bgpupdates.potaroo.net ------------------------------------ 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

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