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[bgp-stats] Routing Table Report - Japan view
* BGP Statistics focusing on the Asia Pacific Region *
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Routing Table Report 04:00 +10GMT Sun 24 Feb, 2002
Analysis Summary
----------------
BGP routing table entries examined: 108526
Prefixes after maximum aggregation: 71909
Unique aggregates announced to Internet: 51362
Total ASes present in the Internet Routing Table: 12589
Origin-only ASes present in the Internet Routing Table: 10892
Origin ASes announcing only one prefix: 4778
Transit ASes present in the Internet Routing Table: 1697
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: 16
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: 1177916104
Equivalent to 70 /8s, 53 /16s and 146 /24s
Percentage of available address space announced: 31.8
Percentage of allocated address space announced: 60.1
Percentage of available address space allocated: 52.8
Total number of prefixes smaller than registry allocations: 72379
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 17404
Total APNIC prefixes after maximum aggregation: 10526
Prefixes being announced from the APNIC address blocks: 15953
Unique aggregates announced from the APNIC address blocks: 9379
APNIC Region origin ASes present in the Internet Routing Table: 1440
APNIC Region origin ASes announcing only one prefix: 489
APNIC Region transit ASes present in the Internet Routing Table: 257
Average APNIC Region AS path length visible: 5.3
Max APNIC Region AS path length visible: 15
Number of APNIC addresses announced to Internet: 83696448
Equivalent to 4 /8s, 253 /16s and 27 /24s
Percentage of available APNIC address space announced: 61.9
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: 72998
Total ARIN prefixes after maximum aggregation: 47339
Prefixes being announced from the ARIN address blocks: 51485
Unique aggregates announced from the ARIN address blocks: 16312
ARIN Region origin ASes present in the Internet Routing Table: 7449
ARIN Region origin ASes announcing only one prefix: 2324
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: 194743428
Equivalent to 11 /8s, 155 /16s and 140 /24s
Percentage of available ARIN address space announced: 72.5
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: 18124
Total RIPE prefixes after maximum aggregation: 14044
Prefixes being announced from the RIPE address blocks: 14899
Unique aggregates announced from the RIPE address blocks: 10007
RIPE Region origin ASes present in the Internet Routing Table: 3639
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: 5.9
Max RIPE Region AS path length visible: 15
Number of RIPE addresses announced to Internet: 106904192
Equivalent to 6 /8s, 95 /16s and 58 /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 1309 1245 961 Telstra Pty Ltd
4538 454 1162 16 China Education and Research
703 401 359 310 UUNET Technologies, Inc.
2907 400 1942 366 SINET Japan
2764 387 361 362 connect.com.au pty ltd
7474 301 289 205 Optus Communications Pty Ltd
4755 289 111 84 Videsh Sanchar Nigam Ltd. Aut
4134 270 1874 98 Data Communications Bureau
9394 252 112 3 CHINA RAILWAY Internet(CRNET)
17557 229 17 97 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 120 186 40 Digital United Inc.
4713 117 914 103 NTT Communications Corporatio
9800 115 4231 13 CHINA UNICOM
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 1061 2632 854 UUNET Technologies, Inc.
3301 397 924 351 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
786 182 1874 182 The JANET IP Service
719 167 305 121 LANLINK autonomous system
8708 158 22 146 Romania Data Systems S.A.
2856 131 790 120 BTnet UK Regional network
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
2830 92 210 73 UUNET Dual-Homed customers
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
701 2099 8443 1498 UUNET Technologies, Inc.
7018 1234 7511 931 AT&T
3908 833 1661 481 Supernet, Inc.
1 822 8103 601 BBN Planet
1239 803 3332 619 Sprint
4323 659 434 258 Time Warner Communications, I
7046 647 853 425 UUNET Technologies, Inc.
852 607 1118 404 Telus Advanced Communications
209 540 1974 310 Qwest
3549 459 823 234 Global Crossing
7132 455 510 164 Southwestern Bell Internet Se
2914 453 2192 420 Verio, Inc.
690 437 66 283 Merit Network
7843 377 298 47 Adelphia Corp.
705 374 114 264 UUNET Technologies, Inc.
2149 372 208 310 Performance Systems, Inc.
577 353 588 221 Bell Advanced Communications
3561 348 2204 309 Cable & Wireless USA
3741 343 730 234 The Internet Solution
2386 333 355 190 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 659 401 Time Warner Communications, I
3908 833 352 Supernet, Inc.
1221 1309 348 Telstra Pty Ltd
7843 377 330 Adelphia Corp.
7018 1234 303 AT&T
7132 455 291 Southwestern Bell Internet Se
4151 305 289 USDA
6198 307 274 BellSouth Network Solutions,
11371 278 272 Rhythms NetConnections
9394 252 249 CHINA RAILWAY Internet(CRNET)
6347 316 238 SAVVIS Communications Corpora
209 540 230 Qwest
7029 244 229 Alltel Information Services,
3549 459 225 Global Crossing
7046 647 222 UUNET Technologies, Inc.
1 822 221 BBN Planet
702 1061 207 UUNET Technologies, Inc.
4755 289 205 Videsh Sanchar Nigam Ltd. Aut
4355 240 204 EarthLink, 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
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 /8:20 /9:6 /10:8 /11:12 /12:37
/13:91 /14:233 /15:396 /16:7150 /17:1437 /18:2555
/19:7363 /20:6783 /21:4808 /22:7300 /23:8886 /24:60501
/25:217 /26:256 /27:121 /28:85 /29:91 /30:129
/31:0 /32:41
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
701 1346 2099 UUNET Technologies, Inc.
1221 1164 1309 Telstra Pty Ltd
702 684 1061 UUNET Technologies, Inc.
7018 650 1234 AT&T
3908 588 833 Supernet, Inc.
4323 537 659 Time Warner Communications, I
1239 471 803 Sprint
7046 463 647 UUNET Technologies, Inc.
690 433 437 Merit Network
1 425 822 BBN Planet
852 370 607 Telus Advanced Communications
209 358 540 Qwest
2764 343 387 connect.com.au pty ltd
3549 325 459 Global Crossing
703 324 401 UUNET Technologies, Inc.
705 321 374 UUNET Technologies, Inc.
2149 281 372 Performance Systems, Inc.
7066 276 305 Virginia Polytechnic Institut
6197 275 326 BellSouth Network Solutions,
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 24:781 25:1 32:68 38:9 40:6
44:1 57:14 61:230 62:171 63:1888 64:1123
65:1036 66:717 67:33 68:7 80:205 81:5
128:62 129:122 130:21 131:57 132:11 133:3
134:128 135:10 136:248 137:101 138:148 139:47
140:182 141:62 142:88 143:37 144:143 145:12
146:216 147:156 148:147 149:92 150:41 151:45
152:351 153:32 154:7 155:85 156:75 157:121
158:78 159:90 160:23 161:55 162:139 163:115
164:87 165:121 166:224 167:182 168:119 169:51
170:288 171:2 189:1 192:5426 193:2168 194:2051
195:794 196:441 198:3740 199:3247 200:2327 201:1
202:2912 203:4477 204:3322 205:2171 206:2526 207:2621
208:2567 209:2812 210:545 211:195 212:896 213:571
214:9 215:18 216:2970 217:453 218:12
End of report
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