Weekly Routing Table Report
Routing Table Analysis
cscora at thyme.apnic.net
Fri May 3 06:05:04 EDT 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 03 May, 2002
Analysis Summary
----------------
BGP routing table entries examined: 111873
Prefixes after maximum aggregation: 72897
Unique aggregates announced to Internet: 53102
Total ASes present in the Internet Routing Table: 13028
Origin-only ASes present in the Internet Routing Table: 11298
Origin ASes announcing only one prefix: 4965
Transit ASes present in the Internet Routing Table: 1730
Transit-only ASes present in the Internet Routing Table: 47
Average AS path length visible in the Internet Routing Table: 5.4
Max AS path length visible: 17
Illegal AS announcements present in the Routing Table: 4
Non-routable prefixes present in the Routing Table: 0
Prefixes being announced from the IANA Reserved Address blocks: 43
Number of addresses announced to Internet: 1188794684
Equivalent to 70 /8s, 219 /16s and 145 /24s
Percentage of available address space announced: 32.1
Percentage of allocated address space announced: 59.8
Percentage of available address space allocated: 53.7
Total number of prefixes smaller than registry allocations: 45077
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 18140
Total APNIC prefixes after maximum aggregation: 10897
Prefixes being announced from the APNIC address blocks: 16645
Unique aggregates announced from the APNIC address blocks: 10272
APNIC Region origin ASes present in the Internet Routing Table: 1503
APNIC Region origin ASes announcing only one prefix: 493
APNIC Region transit ASes present in the Internet Routing Table: 269
Average APNIC Region AS path length visible: 5.3
Max APNIC Region AS path length visible: 17
Number of APNIC addresses announced to Internet: 84391488
Equivalent to 5 /8s, 7 /16s and 182 /24s
Percentage of available APNIC address space announced: 62.4
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: 74929
Total ARIN prefixes after maximum aggregation: 47684
Prefixes being announced from the ARIN address blocks: 53032
Unique aggregates announced from the ARIN address blocks: 16682
ARIN Region origin ASes present in the Internet Routing Table: 7694
ARIN Region origin ASes announcing only one prefix: 2430
ARIN Region transit ASes present in the Internet Routing Table: 752
Average ARIN Region AS path length visible: 5.2
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 191550660
Equivalent to 11 /8s, 106 /16s and 212 /24s
Percentage of available ARIN address space announced: 71.4
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
25600 - 26623
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: 18804
Total RIPE prefixes after maximum aggregation: 14316
Prefixes being announced from the RIPE address blocks: 15483
Unique aggregates announced from the RIPE address blocks: 10336
RIPE Region origin ASes present in the Internet Routing Table: 3784
RIPE Region origin ASes announcing only one prefix: 2042
RIPE Region transit ASes present in the Internet Routing Table: 692
Average RIPE Region AS path length visible: 5.9
Max RIPE Region AS path length visible: 15
Number of RIPE addresses announced to Internet: 108931888
Equivalent to 6 /8s, 126 /16s and 43 /24s
Percentage of available RIPE address space announced: 72.1
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 1277 1210 941 Telstra Pty Ltd
4538 477 1194 17 China Education and Research
2907 434 1878 371 SINET Japan
703 410 336 327 UUNET Technologies, Inc.
2764 397 362 364 connect.com.au pty ltd
7474 307 291 209 Optus Communications Pty Ltd
4134 280 2036 94 Data Communications Bureau
9443 274 44 63 Primus Telecommunications
17557 269 18 108 Pakistan Telecom
4755 248 109 74 Videsh Sanchar Nigam Ltd. Aut
4766 221 1518 158 Korea Internet Exchange for "
9583 169 32 5 Satyam Infoway Ltd.,
4804 167 92 66 Microplex PTY LTD
7539 165 238 159 TANet2, sponsored by NSC, TAI
9768 146 386 80 Korea Telecom
7657 126 22 89 The Internet Group Limited
4814 125 64 5 China Telecom (Group) - Beiji
17676 122 1952 9 XTAGE CORPORATION
4713 115 993 106 NTT Communications Corporatio
4780 113 186 39 Digital United Inc.
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 1037 2580 851 UUNET Technologies, Inc.
3301 394 924 346 TeliaNet Sweden
5515 275 761 173 Sonera Finland Autonomous Sys
3215 264 597 164 France Telecom / &Equant
680 231 2149 230 DFN-IP service G-WiN
3320 230 1947 177 Deutsche Telekom AG
1257 210 462 207 SWIPnet Swedish IP Network
5400 198 82 93 Concert European Core Network
786 182 1874 182 The JANET IP Service
8708 143 22 137 Romania Data Systems S.A.
719 136 270 96 LANLINK autonomous system
12302 130 9 49 MobiFon S.A.
2856 126 786 116 BTnet UK Regional network
8297 122 53 67 Teleglobe Autonomous System i
3303 117 546 116 Swisscom Ltd
3269 116 694 71 TELECOM ITALIA
5536 107 9 39 Internet Egypt Network
2118 106 109 20 EUnet/RELCOM Autonomous Syste
5511 106 191 93 France Telecom
517 101 226 97 KPNQwest Germany GmbH
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
701 2055 8409 1469 UUNET Technologies, Inc.
7018 1280 7524 935 AT&T
3908 874 1661 486 Supernet, Inc.
1239 824 3389 661 Sprint
1 812 8188 456 BBN Planet
7046 808 877 582 UUNET Technologies, Inc.
852 662 1148 421 Telus Advanced Communications
4323 632 436 256 Time Warner Communications, I
209 583 1984 321 Qwest
7132 569 604 140 Southwestern Bell Internet Se
3549 519 856 321 Global Crossing
690 493 71 312 Merit Network
7066 473 202 248 Virginia Polytechnic Institut
7843 456 349 48 Adelphia Corp.
2914 417 2145 404 Verio, Inc.
705 377 100 268 UUNET Technologies, Inc.
2149 346 191 288 Performance Systems, Inc.
6197 346 342 135 BellSouth Network Solutions,
3741 344 731 236 The Internet Solution
6347 336 370 81 SAVVIS Communications Corpora
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
4538 477 460 China Education and Research
7132 569 429 Southwestern Bell Internet Se
7843 456 408 Adelphia Corp.
3908 874 388 Supernet, Inc.
4323 632 376 Time Warner Communications, I
1 812 356 BBN Planet
7018 1280 345 AT&T
1221 1277 336 Telstra Pty Ltd
4151 304 288 USDA
11371 292 286 Rhythms NetConnections
209 583 262 Qwest
6347 336 255 SAVVIS Communications Corpora
7029 262 247 Alltel Information Services,
852 662 241 Telus Advanced Communications
7046 808 226 UUNET Technologies, Inc.
7066 473 225 Virginia Polytechnic Institut
4355 259 223 EarthLink, Inc.
6197 346 211 BellSouth Network Solutions,
9443 274 211 Primus Telecommunications
6517 244 210 Yipes Communications, Inc.
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
25707 UNALLOCATED 63.167.148.0/24 7018 AT&T
112 UNALLOCATED 192.175.48.0/24 7500 A Root DNS Server in
5757 UNALLOCATED 207.19.224.0/24 701 UUNET Technologies,
25733 UNALLOCATED 208.33.184.0/22 1239 Sprint
Advertised Unregistered Addresses
---------------------------------
Network Origin AS Description
39.0.0.0/8 4554 Exchange Point Blocks
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
153.147.0.0/16 3561 Cable & Wireless USA
154.150.0.0/16 6494 IDCI
158.0.0.0/13 568 DISO-UNRRA
164.233.0.0/16 6020 DISA NETWORK SERVICES
192.31.126.0/23 1103 SURFnet BV
192.31.128.0/21 1103 SURFnet BV
192.44.0.0/19 702 UUNET Technologies, Inc.
192.72.0.0/18 4780 Digital United Inc.
192.72.0.0/16 4780 Digital United Inc.
192.83.1.0/24 5515 Sonera Finland Autonomous Sys
192.83.2.0/24 5515 Sonera Finland Autonomous Sys
192.83.8.0/21 5515 Sonera Finland Autonomous Sys
192.83.14.0/24 5515 Sonera Finland Autonomous Sys
192.83.16.0/20 5515 Sonera Finland Autonomous Sys
192.83.25.0/24 5515 Sonera Finland Autonomous Sys
192.83.32.0/19 5515 Sonera Finland Autonomous Sys
192.83.96.0/22 5515 Sonera Finland Autonomous Sys
192.83.100.0/24 5515 Sonera Finland Autonomous Sys
192.91.198.0/24 2568 CTS Network Services
192.92.167.0/24 297 NASA Science Network
192.119.135.0/24 270 NASA
192.135.50.0/24 7018 AT&T
192.135.248.0/23 109 Cisco Systems, Inc.
192.136.79.0/24 719 LANLINK autonomous system
192.136.86.0/24 719 LANLINK autonomous system
192.136.87.0/24 719 LANLINK autonomous system
192.136.88.0/24 719 LANLINK autonomous system
192.139.62.0/24 6539 GT Group Telecom Services Cor
192.140.0.0/16 5511 France Telecom
192.152.213.0/24 1239 Sprint
192.153.136.0/21 568 DISO-UNRRA
192.156.0.0/19 568 DISO-UNRRA
192.172.0.0/19 568 DISO-UNRRA
192.195.253.0/24 237 Merit Network
192.208.29.0/24 3908 Supernet, Inc.
192.208.30.0/23 3908 Supernet, Inc.
192.243.36.0/23 7168 Northwest Link
Number of prefixes announced per prefix length (Global)
-------------------------------------------------------
/1:0 /2:0 /3:0 /4:0 /5:0 /6:0
/7:0 /8:20 /9:8 /10:7 /11:13 /12:32
/13:85 /14:231 /15:404 /16:7186 /17:1426 /18:2605
/19:7491 /20:7070 /21:5029 /22:7729 /23:9367 /24:62392
/25:224 /26:194 /27:86 /28:92 /29:53 /30:92
/31:0 /32:37
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
702 648 1037 UUNET Technologies, Inc.
701 612 2055 UUNET Technologies, Inc.
3908 453 874 Supernet, Inc.
7046 435 808 UUNET Technologies, Inc.
690 432 493 Merit Network
7066 381 473 Virginia Polytechnic Institut
7018 331 1280 AT&T
209 275 583 Qwest
7843 267 456 Adelphia Corp.
7029 247 262 Alltel Information Services,
6197 246 346 BellSouth Network Solutions,
11371 245 292 Rhythms NetConnections
1 243 812 BBN Planet
3301 236 394 TeliaNet Sweden
6198 228 304 BellSouth Network Solutions,
6517 222 244 Yipes Communications, Inc.
3549 219 519 Global Crossing
1239 213 824 Sprint
1580 202 214 HQ, 5th Signal Command
3215 199 264 France Telecom / &Equant
Number of /24s announced per /8 block (Global)
----------------------------------------------
3:2 4:2 9:1 12:497 13:10 15:2
17:7 20:2 24:760 25:1 32:67 38:8
40:6 44:1 57:13 61:202 62:197 63:2087
64:1212 65:1284 66:881 67:68 68:9 80:239
81:17 128:59 129:133 130:23 131:47 132:12
133:3 134:121 135:9 136:313 137:93 138:149
139:49 140:186 141:119 142:80 143:38 144:149
145:12 146:225 147:135 148:163 149:92 150:41
151:60 152:308 153:33 154:3 155:99 156:76
157:125 158:69 159:130 160:24 161:56 162:151
163:103 164:271 165:124 166:224 167:170 168:122
169:54 170:302 171:2 192:5449 193:2309 194:2126
195:830 196:438 198:3737 199:3208 200:2435 202:3163
203:4535 204:3281 205:2164 206:2564 207:2647 208:2602
209:2718 210:654 211:212 212:874 213:597 214:9
215:18 216:3012 217:458 218:20
End of report
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