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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 Tue 12 Mar, 2002
Analysis Summary
----------------
BGP routing table entries examined: 109801
Prefixes after maximum aggregation: 72174
Unique aggregates announced to Internet: 52986
Total ASes present in the Internet Routing Table: 12711
Origin-only ASes present in the Internet Routing Table: 11004
Origin ASes announcing only one prefix: 4816
Transit ASes present in the Internet Routing Table: 1707
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: 1
Non-routable prefixes present in the Routing Table: 0
Prefixes being announced from the IANA Reserved Address blocks: 16
Number of addresses announced to Internet: 1160586152
Equivalent to 69 /8s, 45 /16s and 35 /24s
Percentage of available address space announced: 31.3
Percentage of allocated address space announced: 59.3
Percentage of available address space allocated: 52.8
Total number of prefixes smaller than registry allocations: 73642
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 17951
Total APNIC prefixes after maximum aggregation: 10664
Prefixes being announced from the APNIC address blocks: 16473
Unique aggregates announced from the APNIC address blocks: 10003
APNIC Region origin ASes present in the Internet Routing Table: 1457
APNIC Region origin ASes announcing only one prefix: 478
APNIC Region transit ASes present in the Internet Routing Table: 252
Average APNIC Region AS path length visible: 5.3
Max APNIC Region AS path length visible: 15
Number of APNIC addresses announced to Internet: 81517120
Equivalent to 4 /8s, 219 /16s and 218 /24s
Percentage of available APNIC address space announced: 60.3
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: 73554
Total ARIN prefixes after maximum aggregation: 47372
Prefixes being announced from the ARIN address blocks: 51999
Unique aggregates announced from the ARIN address blocks: 17293
ARIN Region origin ASes present in the Internet Routing Table: 7534
ARIN Region origin ASes announcing only one prefix: 2361
ARIN Region transit ASes present in the Internet Routing Table: 774
Average ARIN Region AS path length visible: 5.3
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 182808260
Equivalent to 10 /8s, 229 /16s and 110 /24s
Percentage of available ARIN address space announced: 68.1
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: 18296
Total RIPE prefixes after maximum aggregation: 14138
Prefixes being announced from the RIPE address blocks: 15049
Unique aggregates announced from the RIPE address blocks: 9992
RIPE Region origin ASes present in the Internet Routing Table: 3661
RIPE Region origin ASes announcing only one prefix: 1977
RIPE Region transit ASes present in the Internet Routing Table: 669
Average RIPE Region AS path length visible: 5.8
Max RIPE Region AS path length visible: 15
Number of RIPE addresses announced to Internet: 107440160
Equivalent to 6 /8s, 103 /16s and 104 /24s
Percentage of available RIPE address space announced: 71.2
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 1293 1229 955 Telstra Pty Ltd
4538 459 1162 16 China Education and Research
2907 406 1926 372 SINET Japan
703 402 333 313 UUNET Technologies, Inc.
2764 387 361 363 connect.com.au pty ltd
9394 300 113 4 CHINA RAILWAY Internet(CRNET)
7474 295 289 200 Optus Communications Pty Ltd
4755 294 111 88 Videsh Sanchar Nigam Ltd. Aut
4134 274 1962 97 Data Communications Bureau
9443 273 44 63 Primus Telecommunications
17557 234 15 100 Pakistan Telecom
4766 212 1520 148 Korea Internet Exchange for "
7539 164 237 157 TANet2, sponsored by NSC, TAI
4804 153 84 68 Microplex PTY LTD
9583 143 32 5 Satyam Infoway Ltd.,
9768 137 385 82 Korea Telecom
4713 127 906 104 NTT Communications Corporatio
7657 123 22 86 The Internet Group Limited
4780 118 186 40 Digital United Inc.
17676 117 1872 17 XTAGE CORPORATION
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 1041 2631 852 UUNET Technologies, Inc.
3301 395 924 349 TeliaNet Sweden
3215 258 570 157 France Telecom / &Equant
1257 236 487 232 SWIPnet Swedish IP Network
680 231 2147 230 DFN-IP service G-WiN
5515 216 697 173 Sonera Finland Autonomous Sys
5400 199 83 93 Concert European Core Network
3320 196 1964 171 Deutsche Telekom AG
786 182 1874 182 The JANET IP Service
719 163 289 118 LANLINK autonomous system
8708 158 23 147 Romania Data Systems S.A.
2856 131 790 120 BTnet UK Regional network
3303 124 579 124 Swisscom Ltd
12302 123 8 44 MobiFon S.A.
3269 116 693 70 TELECOM ITALIA
8297 115 37 65 Teleglobe Autonomous System i
9051 101 6 25 INCONET Autonomous System
517 100 226 98 KPNQwest Germany GmbH
2874 97 100 37 Global One Services AB
5511 91 192 79 France Telecom
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
701 2138 8405 1511 UUNET Technologies, Inc.
7018 1211 7495 911 AT&T
3908 846 1659 479 Supernet, Inc.
1 837 8124 611 BBN Planet
1239 795 3382 623 Sprint
4323 639 435 252 Time Warner Communications, I
852 633 1128 413 Telus Advanced Communications
7046 617 835 405 UUNET Technologies, Inc.
209 547 1993 316 Qwest
7132 517 544 159 Southwestern Bell Internet Se
3549 477 843 244 Global Crossing
690 436 66 282 Merit Network
2914 422 2176 418 Verio, Inc.
7843 381 311 50 Adelphia Corp.
2149 380 225 316 Performance Systems, Inc.
705 370 115 261 UUNET Technologies, Inc.
3741 345 731 235 The Internet Solution
2386 340 372 195 AT&T Data Communications Serv
6197 330 215 168 BellSouth Network Solutions,
3561 324 2168 291 Cable & Wireless USA
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
4538 459 443 China Education and Research
4323 639 387 Time Warner Communications, I
3908 846 367 Supernet, Inc.
7132 517 358 Southwestern Bell Internet Se
1221 1293 338 Telstra Pty Ltd
7843 381 331 Adelphia Corp.
7018 1211 300 AT&T
9394 300 296 CHINA RAILWAY Internet(CRNET)
4151 303 287 USDA
11371 287 281 Rhythms NetConnections
6198 309 276 BellSouth Network Solutions,
6347 315 237 SAVVIS Communications Corpora
3549 477 233 Global Crossing
209 547 231 Qwest
7029 243 228 Alltel Information Services,
1 837 226 BBN Planet
852 633 220 Telus Advanced Communications
7046 617 212 UUNET Technologies, Inc.
9443 273 210 Primus Telecommunications
4755 294 206 Videsh Sanchar Nigam Ltd. Aut
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
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
101.101.5.0/24 684 Manitoba Regional Network
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 /8:18 /9:5 /10:8 /11:14 /12:35
/13:88 /14:231 /15:404 /16:7176 /17:1384 /18:2538
/19:7386 /20:6902 /21:4929 /22:7495 /23:9181 /24:61033
/25:223 /26:263 /27:119 /28:89 /29:108 /30:131
/31:0 /32:41
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
701 1380 2138 UUNET Technologies, Inc.
1221 1150 1293 Telstra Pty Ltd
702 663 1041 UUNET Technologies, Inc.
7018 634 1211 AT&T
3908 583 846 Supernet, Inc.
4323 510 639 Time Warner Communications, I
1239 454 795 Sprint
1 434 837 BBN Planet
7046 434 617 UUNET Technologies, Inc.
690 432 436 Merit Network
852 388 633 Telus Advanced Communications
209 360 547 Qwest
2764 343 387 connect.com.au pty ltd
3549 340 477 Global Crossing
703 324 402 UUNET Technologies, Inc.
705 317 370 UUNET Technologies, Inc.
2149 287 380 Performance Systems, Inc.
9394 287 300 CHINA RAILWAY Internet(CRNET)
11371 281 287 Rhythms NetConnections
6197 279 330 BellSouth Network Solutions,
Number of /24s announced per /8 block (Global)
----------------------------------------------
3:1 9:1 12:488 13:10 15:1 17:5
20:2 24:756 25:1 32:69 38:9 40:6
44:1 57:15 61:279 62:168 63:1887 64:1146
65:1072 66:807 67:52 68:5 80:210 81:5
101:1 128:63 129:123 130:24 131:73 132:11
133:3 134:126 135:10 136:251 137:102 138:194
139:48 140:185 141:61 142:88 143:37 144:142
145:12 146:218 147:157 148:131 149:91 150:41
151:49 152:343 153:33 154:8 155:90 156:76
157:114 158:72 159:118 160:23 161:55 162:139
163:108 164:94 165:123 166:225 167:188 168:119
169:50 170:289 171:2 189:1 192:5416 193:2200
194:2081 195:798 196:427 198:3666 199:3220 200:2383
201:1 202:3045 203:4542 204:3327 205:2177 206:2567
207:2632 208:2567 209:2809 210:550 211:200 212:873
213:588 214:9 215:18 216:2967 217:442 218:21
End of report
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