Weekly Routing Table Report
Routing Table Analysis
cscora at thyme.apnic.net
Fri Mar 1 05:04:44 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 01 Mar, 2002
Analysis Summary
----------------
BGP routing table entries examined: 109166
Prefixes after maximum aggregation: 72127
Unique aggregates announced to Internet: 51877
Total ASes present in the Internet Routing Table: 12656
Origin-only ASes present in the Internet Routing Table: 10956
Origin ASes announcing only one prefix: 4788
Transit ASes present in the Internet Routing Table: 1700
Transit-only ASes present in the Internet Routing Table: 57
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: 9
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: 1170537896
Equivalent to 69 /8s, 196 /16s and 253 /24s
Percentage of available address space announced: 31.6
Percentage of allocated address space announced: 59.8
Percentage of available address space allocated: 52.8
Total number of prefixes smaller than registry allocations: 73032
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 17792
Total APNIC prefixes after maximum aggregation: 10648
Prefixes being announced from the APNIC address blocks: 16359
Unique aggregates announced from the APNIC address blocks: 9952
APNIC Region origin ASes present in the Internet Routing Table: 1456
APNIC Region origin ASes announcing only one prefix: 480
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: 80235584
Equivalent to 4 /8s, 200 /16s and 76 /24s
Percentage of available APNIC address space announced: 59.3
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: 73100
Total ARIN prefixes after maximum aggregation: 47396
Prefixes being announced from the ARIN address blocks: 51620
Unique aggregates announced from the ARIN address blocks: 16248
ARIN Region origin ASes present in the Internet Routing Table: 7494
ARIN Region origin ASes announcing only one prefix: 2343
ARIN Region transit ASes present in the Internet Routing Table: 769
Average ARIN Region AS path length visible: 5.3
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 190060100
Equivalent to 11 /8s, 84 /16s and 22 /24s
Percentage of available ARIN address space announced: 70.8
ARIN AS Blocks 1 - 1876, 1902 - 2042, 2044 - 2046, 2048 - 2106
2138 - 2584, 2615 - 2772, 2823 - 2829, 2880 - 3153
3354 - 4607, 4865 - 5119, 5632 - 6655, 6912 - 7466
7723 - 8191, 10240 - 12287, 13312 - 15359
16384 - 17407, 18432 - 20479, 21504 - 23551
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: 18270
Total RIPE prefixes after maximum aggregation: 14083
Prefixes being announced from the RIPE address blocks: 15001
Unique aggregates announced from the RIPE address blocks: 10014
RIPE Region origin ASes present in the Internet Routing Table: 3648
RIPE Region origin ASes announcing only one prefix: 1965
RIPE Region transit ASes present in the Internet Routing Table: 665
Average RIPE Region AS path length visible: 5.9
Max RIPE Region AS path length visible: 15
Number of RIPE addresses announced to Internet: 107107488
Equivalent to 6 /8s, 98 /16s and 84 /24s
Percentage of available RIPE address space announced: 70.9
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 1298 1229 959 Telstra Pty Ltd
4538 457 1162 16 China Education and Research
2907 408 1975 371 SINET Japan
703 397 353 307 UUNET Technologies, Inc.
2764 385 360 361 connect.com.au pty ltd
7474 298 289 203 Optus Communications Pty Ltd
4755 297 111 86 Videsh Sanchar Nigam Ltd. Aut
4134 270 1874 98 Data Communications Bureau
9443 270 44 62 Primus Telecommunications
9394 263 112 3 CHINA RAILWAY Internet(CRNET)
17557 228 15 99 Pakistan Telecom
4766 211 1393 147 Korea Internet Exchange for "
4804 148 84 68 Microplex PTY LTD
9768 147 385 89 Korea Telecom
9583 142 32 5 Satyam Infoway Ltd.,
7539 134 215 131 TANet2, sponsored by NSC, TAI
4713 127 914 104 NTT Communications Corporatio
7657 122 22 85 The Internet Group Limited
4780 120 186 40 Digital United Inc.
17676 115 1840 17 XTAGE CORPORATION
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 1062 2618 856 UUNET Technologies, Inc.
3301 397 924 351 TeliaNet Sweden
3215 259 570 156 France Telecom / &Equant
1257 244 487 240 SWIPnet Swedish IP Network
680 231 2147 230 DFN-IP service G-WiN
5515 217 713 174 Sonera Finland Autonomous Sys
5400 201 82 93 Concert European Core Network
3320 195 1964 171 Deutsche Telekom AG
786 181 1858 181 The JANET IP Service
719 164 289 119 LANLINK autonomous system
8708 161 22 147 Romania Data Systems S.A.
2856 131 790 120 BTnet UK Regional network
3303 123 577 123 Swisscom Ltd
12302 118 7 36 MobiFon S.A.
3269 117 693 71 TELECOM ITALIA
8297 114 40 65 Teleglobe Autonomous System i
517 100 226 98 KPNQwest Germany GmbH
2874 95 100 35 Global One Services AB
5511 89 192 78 France Telecom
5536 89 13 25 Internet Egypt Network
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
701 2176 8501 1518 UUNET Technologies, Inc.
7018 1202 7492 903 AT&T
3908 849 1660 477 Supernet, Inc.
1 824 8103 598 BBN Planet
1239 801 3364 623 Sprint
4323 644 435 257 Time Warner Communications, I
7046 644 838 421 UUNET Technologies, Inc.
852 618 1119 408 Telus Advanced Communications
209 536 2007 313 Qwest
3549 478 844 242 Global Crossing
7132 456 511 165 Southwestern Bell Internet Se
2914 446 2144 413 Verio, Inc.
690 439 67 285 Merit Network
7843 382 302 48 Adelphia Corp.
705 377 117 267 UUNET Technologies, Inc.
2149 368 208 306 Performance Systems, Inc.
3741 344 731 235 The Internet Solution
2386 334 355 191 AT&T Data Communications Serv
3561 334 2171 299 Cable & Wireless USA
6197 326 214 166 BellSouth Network Solutions,
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
4538 457 441 China Education and Research
4323 644 387 Time Warner Communications, I
3908 849 372 Supernet, Inc.
1221 1298 339 Telstra Pty Ltd
7843 382 334 Adelphia Corp.
7018 1202 299 AT&T
7132 456 291 Southwestern Bell Internet Se
4151 306 290 USDA
6198 307 274 BellSouth Network Solutions,
11371 278 272 Rhythms NetConnections
9394 263 260 CHINA RAILWAY Internet(CRNET)
6347 315 237 SAVVIS Communications Corpora
3549 478 236 Global Crossing
7029 244 229 Alltel Information Services,
1 824 226 BBN Planet
7046 644 223 UUNET Technologies, Inc.
209 536 223 Qwest
4755 297 211 Videsh Sanchar Nigam Ltd. Aut
852 618 210 Telus Advanced Communications
9443 270 208 Primus Telecommunications
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
5757 UNALLOCATED 207.19.224.0/24 701 UUNET Technologies,
23309 UNALLOCATED 209.79.154.0/23 2150 California State Uni
23309 UNALLOCATED 209.79.156.0/23 2150 California State Uni
23309 UNALLOCATED 209.132.144.0/24 2150 California State Uni
23309 UNALLOCATED 209.232.36.0/22 2150 California State Uni
65534 PRIVATE 209.242.165.32/27 195 San Diego Supercompu
65534 PRIVATE 209.242.166.0/26 195 San Diego Supercompu
65534 PRIVATE 209.242.166.72/29 195 San Diego Supercompu
65534 PRIVATE 209.242.166.80/28 195 San Diego Supercompu
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 /12:34
/13:88 /14:233 /15:404 /16:7167 /17:1377 /18:2530
/19:7351 /20:6858 /21:4854 /22:7425 /23:9095 /24:60760
/25:214 /26:257 /27:123 /28:93 /29:93 /30:127
/31:0 /32:38
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
701 1410 2176 UUNET Technologies, Inc.
1221 1154 1298 Telstra Pty Ltd
702 685 1062 UUNET Technologies, Inc.
7018 623 1202 AT&T
3908 588 849 Supernet, Inc.
4323 515 644 Time Warner Communications, I
1239 465 801 Sprint
7046 459 644 UUNET Technologies, Inc.
690 435 439 Merit Network
1 429 824 BBN Planet
852 375 618 Telus Advanced Communications
209 351 536 Qwest
2764 341 385 connect.com.au pty ltd
3549 340 478 Global Crossing
703 322 397 UUNET Technologies, Inc.
705 322 377 UUNET Technologies, Inc.
2149 279 368 Performance Systems, Inc.
6197 275 326 BellSouth Network Solutions,
7066 273 302 Virginia Polytechnic Institut
11371 272 278 Rhythms NetConnections
Number of /24s announced per /8 block (Global)
----------------------------------------------
3:1 9:1 12:489 13:10 15:1 17:5
20:2 24:778 25:1 32:68 38:9 40:6
44:1 57:15 61:237 62:175 63:1878 64:1130
65:1052 66:735 67:49 68:7 80:208 81:4
128:62 129:123 130:23 131:56 132:11 133:3
134:127 135:10 136:250 137:101 138:143 139:48
140:176 141:62 142:82 143:37 144:151 145:13
146:217 147:163 148:148 149:91 150:41 151:48
152:346 153:31 154:7 155:89 156:75 157:119
158:79 159:116 160:23 161:55 162:140 163:117
164:91 165:115 166:223 167:184 168:118 169:49
170:272 171:2 189:1 192:5425 193:2189 194:2090
195:788 196:432 198:3727 199:3233 200:2368 201:1
202:3037 203:4533 204:3317 205:2172 206:2515 207:2618
208:2562 209:2791 210:550 211:196 212:891 213:571
214:9 215:18 216:2949 217:457 218:21
End of report
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