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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 Mon 11 Mar, 2002
Analysis Summary
----------------
BGP routing table entries examined: 109726
Prefixes after maximum aggregation: 72142
Unique aggregates announced to Internet: 53006
Total ASes present in the Internet Routing Table: 12695
Origin-only ASes present in the Internet Routing Table: 10997
Origin ASes announcing only one prefix: 4809
Transit ASes present in the Internet Routing Table: 1698
Transit-only ASes present in the Internet Routing Table: 56
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: 8
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: 1160357032
Equivalent to 69 /8s, 41 /16s and 164 /24s
Percentage of available address space announced: 31.3
Percentage of allocated address space announced: 59.2
Percentage of available address space allocated: 52.8
Total number of prefixes smaller than registry allocations: 73556
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 17886
Total APNIC prefixes after maximum aggregation: 10659
Prefixes being announced from the APNIC address blocks: 16410
Unique aggregates announced from the APNIC address blocks: 9988
APNIC Region origin ASes present in the Internet Routing Table: 1458
APNIC Region origin ASes announcing only one prefix: 482
APNIC Region transit ASes present in the Internet Routing Table: 251
Average APNIC Region AS path length visible: 5.3
Max APNIC Region AS path length visible: 15
Number of APNIC addresses announced to Internet: 81490752
Equivalent to 4 /8s, 219 /16s and 115 /24s
Percentage of available APNIC address space announced: 60.2
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: 73549
Total ARIN prefixes after maximum aggregation: 47354
Prefixes being announced from the ARIN address blocks: 51985
Unique aggregates announced from the ARIN address blocks: 17284
ARIN Region origin ASes present in the Internet Routing Table: 7522
ARIN Region origin ASes announcing only one prefix: 2355
ARIN Region transit ASes present in the Internet Routing Table: 767
Average ARIN Region AS path length visible: 5.3
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 182771652
Equivalent to 10 /8s, 228 /16s and 223 /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: 18290
Total RIPE prefixes after maximum aggregation: 14129
Prefixes being announced from the RIPE address blocks: 15036
Unique aggregates announced from the RIPE address blocks: 10032
RIPE Region origin ASes present in the Internet Routing Table: 3658
RIPE Region origin ASes announcing only one prefix: 1972
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: 107458080
Equivalent to 6 /8s, 103 /16s and 174 /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 1298 1229 957 Telstra Pty Ltd
4538 462 1162 16 China Education and Research
2907 409 1975 373 SINET Japan
703 402 333 313 UUNET Technologies, Inc.
2764 385 360 361 connect.com.au pty ltd
9394 301 113 4 CHINA RAILWAY Internet(CRNET)
7474 295 289 200 Optus Communications Pty Ltd
4755 292 111 87 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 213 1521 147 Korea Internet Exchange for "
7539 164 237 157 TANet2, sponsored by NSC, TAI
4804 148 84 68 Microplex PTY LTD
9583 139 32 5 Satyam Infoway Ltd.,
9768 137 385 82 Korea Telecom
4713 126 898 103 NTT Communications Corporatio
7657 123 22 86 The Internet Group Limited
4780 117 186 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 1038 2630 851 UUNET Technologies, Inc.
3301 394 923 348 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 122 577 122 Swisscom Ltd
12302 121 8 42 MobiFon S.A.
3269 116 693 70 TELECOM ITALIA
8297 115 37 65 Teleglobe Autonomous System i
517 101 226 99 KPNQwest Germany GmbH
9051 101 6 25 INCONET Autonomous System
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 2139 8421 1512 UUNET Technologies, Inc.
7018 1207 7479 907 AT&T
3908 850 1659 481 Supernet, Inc.
1 835 8107 609 BBN Planet
1239 795 3378 623 Sprint
4323 639 435 252 Time Warner Communications, I
7046 620 835 407 UUNET Technologies, Inc.
852 614 1092 398 Telus Advanced Communications
209 547 1993 316 Qwest
7132 517 544 159 Southwestern Bell Internet Se
3549 480 843 245 Global Crossing
690 436 66 282 Merit Network
2914 422 2176 418 Verio, Inc.
7843 382 311 50 Adelphia Corp.
2149 380 225 316 Performance Systems, Inc.
705 365 114 256 UUNET Technologies, Inc.
3741 345 731 235 The Internet Solution
2386 339 356 194 AT&T Data Communications Serv
6197 330 215 168 BellSouth Network Solutions,
577 324 602 217 Bell Advanced Communications
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
4538 462 446 China Education and Research
4323 639 387 Time Warner Communications, I
3908 850 369 Supernet, Inc.
7132 517 358 Southwestern Bell Internet Se
1221 1298 341 Telstra Pty Ltd
7843 382 332 Adelphia Corp.
7018 1207 300 AT&T
9394 301 297 CHINA RAILWAY Internet(CRNET)
4151 305 289 USDA
11371 289 283 Rhythms NetConnections
6198 309 276 BellSouth Network Solutions,
6347 315 237 SAVVIS Communications Corpora
3549 480 235 Global Crossing
209 547 231 Qwest
7029 243 228 Alltel Information Services,
1 835 226 BBN Planet
852 614 216 Telus Advanced Communications
7046 620 213 UUNET Technologies, Inc.
9443 273 210 Primus Telecommunications
4755 292 205 Videsh Sanchar Nigam Ltd. Aut
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
23336 UNALLOCATED 65.163.175.0/24 701 UUNET Technologies,
23336 UNALLOCATED 65.166.167.0/24 701 UUNET Technologies,
23336 UNALLOCATED 65.171.130.0/24 701 UUNET Technologies,
23336 UNALLOCATED 65.222.19.0/24 701 UUNET Technologies,
23339 UNALLOCATED 66.181.32.0/20 701 UUNET Technologies,
65012 PRIVATE 164.117.0.0/16 765 Communications Syste
23336 UNALLOCATED 204.182.49.0/24 701 UUNET Technologies,
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 /16:7174 /17:1382 /18:2536
/19:7384 /20:6896 /21:4919 /22:7476 /23:9163 /24:61015
/25:225 /26:264 /27:119 /28:89 /29:109 /30:131
/31:0 /32:41
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
701 1380 2139 UUNET Technologies, Inc.
1221 1155 1298 Telstra Pty Ltd
702 660 1038 UUNET Technologies, Inc.
7018 633 1207 AT&T
3908 585 850 Supernet, Inc.
4323 510 639 Time Warner Communications, I
1239 455 795 Sprint
7046 437 620 UUNET Technologies, Inc.
1 433 835 BBN Planet
690 432 436 Merit Network
852 374 614 Telus Advanced Communications
209 360 547 Qwest
3549 343 480 Global Crossing
2764 341 385 connect.com.au pty ltd
703 324 402 UUNET Technologies, Inc.
705 313 365 UUNET Technologies, Inc.
9394 288 301 CHINA RAILWAY Internet(CRNET)
2149 287 380 Performance Systems, Inc.
11371 283 289 Rhythms NetConnections
6197 279 330 BellSouth Network Solutions,
Number of /24s announced per /8 block (Global)
----------------------------------------------
3:1 9:1 12:490 13:10 15:1 17:5
20:2 24:758 25:1 32:69 38:9 40:6
44:1 57:15 61:283 62:170 63:1885 64:1150
65:1072 66:804 67:52 68:5 80:212 81:5
101:1 128:63 129:121 130:23 131:74 132:11
133:3 134:125 135:10 136:251 137:102 138:193
139:48 140:185 141:61 142:88 143:37 144:142
145:12 146:216 147:164 148:131 149:91 150:41
151:48 152:343 153:33 154:8 155:90 156:75
157:115 158:73 159:118 160:23 161:55 162:139
163:107 164:94 165:123 166:225 167:188 168:119
169:49 170:290 171:2 189:1 192:5412 193:2208
194:2076 195:800 196:427 198:3693 199:3226 200:2377
201:1 202:3010 203:4532 204:3325 205:2177 206:2569
207:2628 208:2565 209:2809 210:547 211:200 212:869
213:584 214:9 215:18 216:2973 217:441 218:21
End of report
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