Weekly Routing Table Report
Routing Table Analysis
cscora at thyme.apnic.net
Fri Feb 8 05:04:23 EST 2002
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 at 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 at cisco.com>.
Routing Table Report 20:00 +10GMT Fri 08 Feb, 2002
Analysis Summary
----------------
BGP routing table entries examined: 107908
Prefixes after maximum aggregation: 71978
Unique aggregates announced to Internet: 52602
Total ASes present in the Internet Routing Table: 12515
Origin-only ASes present in the Internet Routing Table: 10824
Origin ASes announcing only one prefix: 4729
Transit ASes present in the Internet Routing Table: 1691
Transit-only ASes present in the Internet Routing Table: 60
Average AS path length visible in the Internet Routing Table: 5.4
Max AS path length visible: 20
Illegal AS announcements present in the Routing Table: 2
Non-routable prefixes present in the Routing Table: 0
Prefixes being announced from the IANA Reserved Address blocks: 15
Number of addresses announced to Internet: 1164266760
Equivalent to 69 /8s, 101 /16s and 77 /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: 71887
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 17523
Total APNIC prefixes after maximum aggregation: 10668
Prefixes being announced from the APNIC address blocks: 16019
Unique aggregates announced from the APNIC address blocks: 9821
APNIC Region origin ASes present in the Internet Routing Table: 1450
APNIC Region origin ASes announcing only one prefix: 481
APNIC Region transit ASes present in the Internet Routing Table: 253
Average APNIC Region AS path length visible: 5.3
Max APNIC Region AS path length visible: 15
Number of APNIC addresses announced to Internet: 79436352
Equivalent to 4 /8s, 188 /16s and 26 /24s
Percentage of available APNIC address space announced: 58.7
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: 72415
Total ARIN prefixes after maximum aggregation: 47252
Prefixes being announced from the ARIN address blocks: 51059
Unique aggregates announced from the ARIN address blocks: 17199
ARIN Region origin ASes present in the Internet Routing Table: 7401
ARIN Region origin ASes announcing only one prefix: 2294
ARIN Region transit ASes present in the Internet Routing Table: 762
Average ARIN Region AS path length visible: 5.3
Max ARIN Region AS path length visible: 20
Number of ARIN addresses announced to Internet: 185726788
Equivalent to 11 /8s, 17 /16s and 247 /24s
Percentage of available ARIN address space announced: 69.2
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: 17970
Total RIPE prefixes after maximum aggregation: 14058
Prefixes being announced from the RIPE address blocks: 14778
Unique aggregates announced from the RIPE address blocks: 9905
RIPE Region origin ASes present in the Internet Routing Table: 3603
RIPE Region origin ASes announcing only one prefix: 1954
RIPE Region transit ASes present in the Internet Routing Table: 657
Average RIPE Region AS path length visible: 5.9
Max RIPE Region AS path length visible: 15
Number of RIPE addresses announced to Internet: 106625024
Equivalent to 6 /8s, 90 /16s and 248 /24s
Percentage of available RIPE address space announced: 70.6
RIPE AS Blocks 1877 - 1901, 2043, 2047, 2107 - 2136, 2585 - 2614
2773 - 2822, 2830 - 2879, 3154 - 3353, 5377 - 5631
6656 - 6911, 8192 - 9215, 12288 - 13311, 15360 - 16383
20480 - 21503, 24576 - 25599
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 1318 1258 963 Telstra Pty Ltd
4538 454 1162 16 China Education and Research
703 405 363 307 UUNET Technologies, Inc.
2907 395 1893 364 SINET Japan
2764 392 361 369 connect.com.au pty ltd
7474 301 290 204 Optus Communications Pty Ltd
4755 287 111 89 Videsh Sanchar Nigam Ltd. Aut
4134 269 1858 100 Data Communications Bureau
9394 236 112 3 CHINA RAILWAY Internet(CRNET)
4766 206 1393 145 Korea Internet Exchange for "
17557 200 15 90 Pakistan Telecom
7539 162 220 155 TANet2, sponsored by NSC, TAI
9443 161 44 59 Primus Telecommunications
9768 146 385 88 Korea Telecom
9583 139 32 5 Satyam Infoway Ltd.,
4197 130 13 5 Global OnLine Japan K.K.
4740 124 17 104 OzEmail ISP
7657 121 22 84 The Internet Group Limited
4713 117 914 103 NTT Communications Corporatio
4780 115 186 40 Digital United Inc.
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 1112 2619 863 UUNET Technologies, Inc.
3301 398 924 351 TeliaNet Sweden
1257 252 487 248 SWIPnet Swedish IP Network
3215 242 570 156 France Telecom / &Equant
680 232 2147 230 DFN-IP service G-WiN
5515 218 705 175 Sonera Finland Autonomous Sys
5400 199 82 96 Concert European Core Network
3320 196 1964 172 Deutsche Telekom AG
786 182 1874 182 The JANET IP Service
719 166 289 120 LANLINK autonomous system
8708 159 21 145 Romania Data Systems S.A.
2856 131 790 120 BTnet UK Regional network
3303 122 576 122 Swisscom Ltd
3269 117 693 71 TELECOM ITALIA
8297 117 40 66 Teleglobe Autonomous System i
12302 114 7 35 MobiFon S.A.
517 100 226 98 KPNQwest Germany GmbH
5603 93 12 59 SiOL Internet d.o.o.
5511 92 192 81 France Telecom
1267 91 1471 41 Infostrada S.p.A.
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
701 2087 8303 1510 UUNET Technologies, Inc.
7018 1233 7510 928 AT&T
1 842 8153 613 BBN Planet
3908 810 1662 470 Supernet, Inc.
1239 795 3216 615 Sprint
4323 635 432 239 Time Warner Communications, I
7046 632 833 417 UUNET Technologies, Inc.
852 616 1141 409 Telus Advanced Communications
209 529 1908 301 Qwest
690 492 72 307 Merit Network
7132 455 508 163 Southwestern Bell Internet Se
2914 453 2195 422 Verio, Inc.
3549 436 821 217 Global Crossing
705 390 116 274 UUNET Technologies, Inc.
2149 390 210 326 Performance Systems, Inc.
3561 369 2237 325 Cable & Wireless USA
577 352 604 219 Bell Advanced Communications
3741 348 731 239 The Internet Solution
2386 329 355 190 AT&T Data Communications Serv
6197 327 227 161 BellSouth Network Solutions,
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
4538 454 438 China Education and Research
4323 635 396 Time Warner Communications, I
1221 1318 355 Telstra Pty Ltd
3908 810 340 Supernet, Inc.
7018 1233 305 AT&T
4151 311 295 USDA
7132 455 292 Southwestern Bell Internet Se
11371 278 271 Rhythms NetConnections
702 1112 249 UUNET Technologies, Inc.
9394 236 233 CHINA RAILWAY Internet(CRNET)
6347 311 232 SAVVIS Communications Corpora
1 842 229 BBN Planet
209 529 228 Qwest
7843 259 221 Adelphia Corp.
3549 436 219 Global Crossing
7046 632 215 UUNET Technologies, Inc.
852 616 207 Telus Advanced Communications
4355 233 204 EarthLink, Inc.
6198 296 202 BellSouth Network Solutions,
1580 211 200 HQ, 5th Signal Command
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
1877 UNALLOCATED 192.108.201.0/24 1880 Stupi, house man's p
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
126.0.0.0/8 7336 Compass Communications
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 /9:6 /10:7 /11:12 /12:37
/13:91 /14:231 /15:392 /16:7137 /17:1421 /18:2498
/19:7344 /20:6700 /21:4791 /22:7265 /23:8915 /24:60015
/25:219 /26:278 /27:128 /28:100 /29:103 /30:162
/31:0 /32:38
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
701 1336 2087 UUNET Technologies, Inc.
1221 1172 1318 Telstra Pty Ltd
702 735 1112 UUNET Technologies, Inc.
7018 646 1233 AT&T
3908 565 810 Supernet, Inc.
4323 517 635 Time Warner Communications, I
690 488 492 Merit Network
1239 471 795 Sprint
7046 460 632 UUNET Technologies, Inc.
1 435 842 BBN Planet
852 375 616 Telus Advanced Communications
209 351 529 Qwest
2764 348 392 connect.com.au pty ltd
705 336 390 UUNET Technologies, Inc.
703 327 405 UUNET Technologies, Inc.
3549 305 436 Global Crossing
2149 297 390 Performance Systems, Inc.
7066 275 304 Virginia Polytechnic Institut
6197 274 327 BellSouth Network Solutions,
11371 272 278 Rhythms NetConnections
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:1 9:1 12:466 13:10 15:1 17:5
20:8 24:664 25:1 32:68 38:9 40:6
44:1 57:14 61:218 62:163 63:1874 64:1099
65:1028 66:668 67:32 68:5 80:179 81:4
128:65 129:119 130:23 131:52 132:11 133:3
134:128 135:10 136:243 137:105 138:148 139:47
140:163 141:61 142:67 143:39 144:154 145:12
146:216 147:148 148:144 149:86 150:40 151:43
152:328 153:32 154:8 155:81 156:77 157:120
158:80 159:88 160:24 161:55 162:101 163:117
164:95 165:126 166:222 167:167 168:114 169:48
170:291 171:3 192:5445 193:2232 194:2031 195:790
196:444 198:3736 199:3261 200:2315 201:1 202:2923
203:4507 204:3281 205:2157 206:2515 207:2628 208:2566
209:2850 210:525 211:146 212:865 213:553 214:9
215:19 216:2938 217:439 218:10
End of report
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