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Weekly Routing Table Report
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 22 Feb, 2002
Analysis Summary
----------------
BGP routing table entries examined: 108511
Prefixes after maximum aggregation: 71931
Unique aggregates announced to Internet: 51754
Total ASes present in the Internet Routing Table: 12591
Origin-only ASes present in the Internet Routing Table: 10899
Origin ASes announcing only one prefix: 4778
Transit ASes present in the Internet Routing Table: 1692
Transit-only ASes present in the Internet Routing Table: 58
Average AS path length visible in the Internet Routing Table: 5.4
Max AS path length visible: 16
Illegal AS announcements present in the Routing Table: 2
Non-routable prefixes present in the Routing Table: 1
Prefixes being announced from the IANA Reserved Address blocks: 15
Number of addresses announced to Internet: 1174523208
Equivalent to 70 /8s, 1 /16s and 205 /24s
Percentage of available address space announced: 31.7
Percentage of allocated address space announced: 60.0
Percentage of available address space allocated: 52.8
Total number of prefixes smaller than registry allocations: 72403
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 17358
Total APNIC prefixes after maximum aggregation: 10557
Prefixes being announced from the APNIC address blocks: 15867
Unique aggregates announced from the APNIC address blocks: 9799
APNIC Region origin ASes present in the Internet Routing Table: 1445
APNIC Region origin ASes announcing only one prefix: 491
APNIC Region transit ASes present in the Internet Routing Table: 255
Average APNIC Region AS path length visible: 5.3
Max APNIC Region AS path length visible: 15
Number of APNIC addresses announced to Internet: 79641920
Equivalent to 4 /8s, 191 /16s and 61 /24s
Percentage of available APNIC address space announced: 58.9
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: 72928
Total ARIN prefixes after maximum aggregation: 47301
Prefixes being announced from the ARIN address blocks: 51446
Unique aggregates announced from the ARIN address blocks: 16297
ARIN Region origin ASes present in the Internet Routing Table: 7449
ARIN Region origin ASes announcing only one prefix: 2322
ARIN Region transit ASes present in the Internet Routing Table: 766
Average ARIN Region AS path length visible: 5.2
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 194750084
Equivalent to 11 /8s, 155 /16s and 166 /24s
Percentage of available ARIN address space announced: 72.6
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: 18225
Total RIPE prefixes after maximum aggregation: 14073
Prefixes being announced from the RIPE address blocks: 14981
Unique aggregates announced from the RIPE address blocks: 9993
RIPE Region origin ASes present in the Internet Routing Table: 3638
RIPE Region origin ASes announcing only one prefix: 1965
RIPE Region transit ASes present in the Internet Routing Table: 660
Average RIPE Region AS path length visible: 5.8
Max RIPE Region AS path length visible: 15
Number of RIPE addresses announced to Internet: 106891520
Equivalent to 6 /8s, 95 /16s and 9 /24s
Percentage of available RIPE address space announced: 70.8
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 1311 1246 963 Telstra Pty Ltd
4538 454 1162 16 China Education and Research
703 402 359 311 UUNET Technologies, Inc.
2907 399 1942 365 SINET Japan
2764 387 361 362 connect.com.au pty ltd
7474 302 290 206 Optus Communications Pty Ltd
4755 290 111 88 Videsh Sanchar Nigam Ltd. Aut
4134 270 1874 98 Data Communications Bureau
9394 253 112 3 CHINA RAILWAY Internet(CRNET)
17557 226 17 95 Pakistan Telecom
4766 213 1392 151 Korea Internet Exchange for "
7539 162 220 155 TANet2, sponsored by NSC, TAI
9443 162 44 60 Primus Telecommunications
9768 146 385 88 Korea Telecom
4804 144 84 68 Microplex PTY LTD
9583 140 32 5 Satyam Infoway Ltd.,
7657 122 22 85 The Internet Group Limited
4780 118 186 40 Digital United Inc.
4713 117 914 103 NTT Communications Corporatio
17676 115 1840 17 XTAGE CORPORATION
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 1063 2631 856 UUNET Technologies, Inc.
3301 398 924 352 TeliaNet Sweden
1257 247 487 243 SWIPnet Swedish IP Network
3215 238 570 155 France Telecom / &Equant
680 232 2147 230 DFN-IP service G-WiN
5515 217 713 174 Sonera Finland Autonomous Sys
5400 197 82 93 Concert European Core Network
3320 196 1964 172 Deutsche Telekom AG
786 181 1858 181 The JANET IP Service
719 167 305 121 LANLINK autonomous system
8708 157 22 145 Romania Data Systems S.A.
2856 131 790 120 BTnet UK Regional network
2118 126 109 20 EUnet/RELCOM Autonomous Syste
3303 123 577 123 Swisscom Ltd
3269 117 693 71 TELECOM ITALIA
8297 116 40 65 Teleglobe Autonomous System i
12302 114 7 35 MobiFon S.A.
517 100 226 98 KPNQwest Germany GmbH
5536 97 13 25 Internet Egypt Network
2874 95 100 35 Global One Services AB
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
701 2106 8443 1503 UUNET Technologies, Inc.
7018 1237 7511 932 AT&T
3908 834 1661 481 Supernet, Inc.
1 817 8102 596 BBN Planet
1239 805 3348 621 Sprint
4323 658 434 257 Time Warner Communications, I
7046 616 850 416 UUNET Technologies, Inc.
852 614 1127 410 Telus Advanced Communications
209 537 1974 309 Qwest
7132 455 510 164 Southwestern Bell Internet Se
2914 453 2193 421 Verio, Inc.
3549 451 807 234 Global Crossing
690 437 66 283 Merit Network
7843 377 298 47 Adelphia Corp.
705 373 114 263 UUNET Technologies, Inc.
2149 373 209 311 Performance Systems, Inc.
577 353 588 221 Bell Advanced Communications
3561 350 2204 310 Cable & Wireless USA
3741 343 730 234 The Internet Solution
2386 332 354 189 AT&T Data Communications Serv
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
4538 454 438 China Education and Research
4323 658 401 Time Warner Communications, I
3908 834 353 Supernet, Inc.
1221 1311 348 Telstra Pty Ltd
7843 377 330 Adelphia Corp.
7018 1237 305 AT&T
7132 455 291 Southwestern Bell Internet Se
4151 305 289 USDA
6198 307 274 BellSouth Network Solutions,
11371 279 272 Rhythms NetConnections
9394 253 250 CHINA RAILWAY Internet(CRNET)
6347 316 238 SAVVIS Communications Corpora
7029 244 229 Alltel Information Services,
209 537 228 Qwest
1 817 221 BBN Planet
3549 451 217 Global Crossing
702 1063 207 UUNET Technologies, Inc.
852 614 204 Telus Advanced Communications
4355 243 204 EarthLink, Inc.
4755 290 202 Videsh Sanchar Nigam Ltd. Aut
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,
Prefixes from private and non-routed address space (Global)
-----------------------------------------------------------
Prefix Origin AS Description
172.16.0.0/12 9367 Tokyo Institute of Technology
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
189.186.184.0/24 4471 Michigan Internet Cooperative
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 /9:6 /10:8 /11:12 /12:38
/13:90 /14:233 /15:396 /16:7146 /17:1433 /18:2528
/19:7364 /20:6760 /21:4801 /22:7291 /23:8889 /24:60555
/25:216 /26:260 /27:120 /28:87 /29:91 /30:130
/31:0 /32:38
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
701 1351 2106 UUNET Technologies, Inc.
1221 1166 1311 Telstra Pty Ltd
702 687 1063 UUNET Technologies, Inc.
7018 652 1237 AT&T
3908 589 834 Supernet, Inc.
4323 537 658 Time Warner Communications, I
1239 472 805 Sprint
690 433 437 Merit Network
7046 433 616 UUNET Technologies, Inc.
1 420 817 BBN Planet
852 372 614 Telus Advanced Communications
209 355 537 Qwest
2764 343 387 connect.com.au pty ltd
703 324 402 UUNET Technologies, Inc.
705 320 373 UUNET Technologies, Inc.
3549 318 451 Global Crossing
2149 282 373 Performance Systems, Inc.
7066 276 305 Virginia Polytechnic Institut
6197 275 326 BellSouth Network Solutions,
11371 273 279 Rhythms NetConnections
Number of /24s announced per /8 block (Global)
----------------------------------------------
3:1 9:1 12:481 13:10 15:1 17:5
20:2 24:771 25:1 32:68 38:9 40:6
44:1 57:14 61:230 62:171 63:1880 64:1128
65:1032 66:721 67:34 68:7 80:204 81:5
128:62 129:123 130:21 131:57 132:11 133:3
134:128 135:10 136:247 137:101 138:148 139:47
140:185 141:62 142:88 143:37 144:152 145:12
146:216 147:156 148:146 149:92 150:39 151:45
152:352 153:32 154:7 155:85 156:75 157:121
158:78 159:89 160:23 161:55 162:139 163:115
164:95 165:120 166:225 167:182 168:119 169:51
170:293 171:2 189:1 192:5436 193:2180 194:2103
195:817 196:443 198:3741 199:3236 200:2318 201:1
202:2906 203:4459 204:3337 205:2174 206:2526 207:2626
208:2570 209:2820 210:528 211:184 212:895 213:567
214:9 215:18 216:2969 217:452 218:10
End of report
-----
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