Weekly Routing Table Report
Routing Table Analysis
cscora at thyme.apnic.net
Fri Feb 15 05:04:38 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 15 Feb, 2002
Analysis Summary
----------------
BGP routing table entries examined: 107865
Prefixes after maximum aggregation: 71870
Unique aggregates announced to Internet: 51605
Total ASes present in the Internet Routing Table: 12551
Origin-only ASes present in the Internet Routing Table: 10860
Origin ASes announcing only one prefix: 4759
Transit ASes present in the Internet Routing Table: 1691
Transit-only ASes present in the Internet Routing Table: 55
Average AS path length visible in the Internet Routing Table: 5.4
Max AS path length visible: 19
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: 14
Number of addresses announced to Internet: 1172878088
Equivalent to 69 /8s, 232 /16s and 179 /24s
Percentage of available address space announced: 31.6
Percentage of allocated address space announced: 59.9
Percentage of available address space allocated: 52.8
Total number of prefixes smaller than registry allocations: 71809
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 17369
Total APNIC prefixes after maximum aggregation: 10575
Prefixes being announced from the APNIC address blocks: 15870
Unique aggregates announced from the APNIC address blocks: 9270
APNIC Region origin ASes present in the Internet Routing Table: 1446
APNIC Region origin ASes announcing only one prefix: 480
APNIC Region transit ASes present in the Internet Routing Table: 254
Average APNIC Region AS path length visible: 5.3
Max APNIC Region AS path length visible: 15
Number of APNIC addresses announced to Internet: 83565888
Equivalent to 4 /8s, 251 /16s and 29 /24s
Percentage of available APNIC address space announced: 61.8
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: 72603
Total ARIN prefixes after maximum aggregation: 47272
Prefixes being announced from the ARIN address blocks: 51295
Unique aggregates announced from the ARIN address blocks: 17275
ARIN Region origin ASes present in the Internet Routing Table: 7429
ARIN Region origin ASes announcing only one prefix: 2313
ARIN Region transit ASes present in the Internet Routing Table: 768
Average ARIN Region AS path length visible: 5.2
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 186573124
Equivalent to 11 /8s, 30 /16s and 225 /24s
Percentage of available ARIN address space announced: 69.5
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: 17893
Total RIPE prefixes after maximum aggregation: 14023
Prefixes being announced from the RIPE address blocks: 14698
Unique aggregates announced from the RIPE address blocks: 9419
RIPE Region origin ASes present in the Internet Routing Table: 3620
RIPE Region origin ASes announcing only one prefix: 1966
RIPE Region transit ASes present in the Internet Routing Table: 655
Average RIPE Region AS path length visible: 5.8
Max RIPE Region AS path length visible: 19
Number of RIPE addresses announced to Internet: 110064128
Equivalent to 6 /8s, 143 /16s and 114 /24s
Percentage of available RIPE address space announced: 72.9
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 1314 1258 959 Telstra Pty Ltd
4538 454 1162 16 China Education and Research
703 403 359 309 UUNET Technologies, Inc.
2907 399 1942 366 SINET Japan
2764 389 361 364 connect.com.au pty ltd
7474 300 289 203 Optus Communications Pty Ltd
4134 270 1874 98 Data Communications Bureau
4755 265 111 82 Videsh Sanchar Nigam Ltd. Aut
9394 243 112 3 CHINA RAILWAY Internet(CRNET)
4766 205 1393 145 Korea Internet Exchange for "
7539 161 204 155 TANet2, sponsored by NSC, TAI
9443 157 44 58 Primus Telecommunications
9768 146 385 88 Korea Telecom
4804 144 84 68 Microplex PTY LTD
9583 134 32 5 Satyam Infoway Ltd.,
7657 122 22 85 The Internet Group Limited
4713 117 914 103 NTT Communications Corporatio
4780 115 186 40 Digital United Inc.
9800 115 4231 13 CHINA UNICOM
17676 115 1840 17 XTAGE CORPORATION
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 1073 2617 860 UUNET Technologies, Inc.
3301 398 924 351 TeliaNet Sweden
1257 256 487 247 SWIPnet Swedish IP Network
3215 242 570 156 France Telecom / &Equant
680 232 2147 230 DFN-IP service G-WiN
5515 214 689 172 Sonera Finland Autonomous Sys
5400 200 83 95 Concert European Core Network
3320 196 1964 172 Deutsche Telekom AG
786 182 1874 182 The JANET IP Service
719 167 305 121 LANLINK autonomous system
8708 155 21 144 Romania Data Systems S.A.
2856 130 790 119 BTnet UK Regional network
3303 123 577 123 Swisscom Ltd
3269 117 693 71 TELECOM ITALIA
12302 115 7 36 MobiFon S.A.
8297 114 40 64 Teleglobe Autonomous System i
517 100 226 98 KPNQwest Germany GmbH
5511 94 193 83 France Telecom
1267 91 1471 41 Infostrada S.p.A.
2830 89 210 71 UUNET Dual-Homed customers
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
701 2105 8429 1502 UUNET Technologies, Inc.
7018 1230 7498 929 AT&T
3908 828 1676 479 Supernet, Inc.
1 827 8103 599 BBN Planet
1239 806 3340 622 Sprint
4323 648 433 243 Time Warner Communications, I
852 615 1125 407 Telus Advanced Communications
7046 612 849 413 UUNET Technologies, Inc.
209 535 1908 305 Qwest
7132 456 510 164 Southwestern Bell Internet Se
2914 452 2193 420 Verio, Inc.
3549 438 821 224 Global Crossing
690 437 66 283 Merit Network
705 383 114 271 UUNET Technologies, Inc.
2149 374 209 313 Performance Systems, Inc.
3561 365 2220 320 Cable & Wireless USA
577 353 588 219 Bell Advanced Communications
7843 349 290 50 Adelphia Corp.
3741 344 730 235 The Internet Solution
2386 333 355 191 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 648 405 Time Warner Communications, I
1221 1314 355 Telstra Pty Ltd
3908 828 349 Supernet, Inc.
7018 1230 301 AT&T
7843 349 299 Adelphia Corp.
7132 456 292 Southwestern Bell Internet Se
4151 304 288 USDA
11371 278 271 Rhythms NetConnections
9394 243 240 CHINA RAILWAY Internet(CRNET)
6347 316 238 SAVVIS Communications Corpora
209 535 230 Qwest
1 827 228 BBN Planet
3549 438 214 Global Crossing
702 1073 213 UUNET Technologies, Inc.
852 615 208 Telus Advanced Communications
4355 244 205 EarthLink, Inc.
6198 301 204 BellSouth Network Solutions,
1580 211 200 HQ, 5th Signal Command
7046 612 199 UUNET Technologies, Inc.
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
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 /8:20 /9:6 /10:7 /11:12 /12:37
/13:91 /14:231 /15:394 /16:7146 /17:1430 /18:2506
/19:7380 /20:6738 /21:4794 /22:7273 /23:8918 /24:59954
/25:220 /26:251 /27:121 /28:85 /29:85 /30:125
/31:0 /32:41
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
701 1354 2105 UUNET Technologies, Inc.
1221 1168 1314 Telstra Pty Ltd
702 698 1073 UUNET Technologies, Inc.
7018 644 1230 AT&T
3908 582 828 Supernet, Inc.
4323 529 648 Time Warner Communications, I
1239 476 806 Sprint
7046 437 612 UUNET Technologies, Inc.
690 433 437 Merit Network
1 426 827 BBN Planet
852 374 615 Telus Advanced Communications
209 356 535 Qwest
2764 345 389 connect.com.au pty ltd
705 330 383 UUNET Technologies, Inc.
703 327 403 UUNET Technologies, Inc.
3549 306 438 Global Crossing
2149 283 374 Performance Systems, Inc.
6197 275 328 BellSouth Network Solutions,
7066 275 304 Virginia Polytechnic Institut
11371 272 278 Rhythms NetConnections
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:1 9:1 12:482 13:10 15:1 17:5
20:5 24:750 25:1 32:68 38:9 40:6
44:1 57:14 61:227 62:170 63:1886 64:1109
65:1031 66:695 67:33 68:5 80:188 81:4
128:63 129:120 130:21 131:57 132:11 133:3
134:128 135:10 136:245 137:106 138:148 139:47
140:162 141:61 142:67 143:37 144:155 145:12
146:217 147:154 148:146 149:91 150:40 151:45
152:302 153:32 154:7 155:83 156:77 157:82
158:81 159:88 160:24 161:54 162:102 163:114
164:94 165:124 166:222 167:168 168:114 169:49
170:292 171:2 192:5423 193:2116 194:2010 195:784
196:445 198:3736 199:3239 200:2319 201:1 202:2889
203:4436 204:3312 205:2163 206:2534 207:2619 208:2574
209:2829 210:531 211:158 212:882 213:558 214:9
215:18 216:2962 217:438 218:10
End of report
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