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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 Sat 09 Mar, 2002
Analysis Summary
----------------
BGP routing table entries examined: 109788
Prefixes after maximum aggregation: 72166
Unique aggregates announced to Internet: 51988
Total ASes present in the Internet Routing Table: 12700
Origin-only ASes present in the Internet Routing Table: 10992
Origin ASes announcing only one prefix: 4807
Transit ASes present in the Internet Routing Table: 1708
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: 7
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: 1167992232
Equivalent to 69 /8s, 158 /16s and 37 /24s
Percentage of available address space announced: 31.5
Percentage of allocated address space announced: 59.6
Percentage of available address space allocated: 52.8
Total number of prefixes smaller than registry allocations: 73608
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 17916
Total APNIC prefixes after maximum aggregation: 10640
Prefixes being announced from the APNIC address blocks: 16445
Unique aggregates announced from the APNIC address blocks: 9990
APNIC Region origin ASes present in the Internet Routing Table: 1455
APNIC Region origin ASes announcing only one prefix: 480
APNIC Region transit ASes present in the Internet Routing Table: 253
Average APNIC Region AS path length visible: 5.3
Max APNIC Region AS path length visible: 15
Number of APNIC addresses announced to Internet: 81497408
Equivalent to 4 /8s, 219 /16s and 141 /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: 73579
Total ARIN prefixes after maximum aggregation: 47385
Prefixes being announced from the ARIN address blocks: 51975
Unique aggregates announced from the ARIN address blocks: 16274
ARIN Region origin ASes present in the Internet Routing Table: 7521
ARIN Region origin ASes announcing only one prefix: 2349
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: 189987012
Equivalent to 11 /8s, 82 /16s and 248 /24s
Percentage of available ARIN address space announced: 70.8
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: 18293
Total RIPE prefixes after maximum aggregation: 14141
Prefixes being announced from the RIPE address blocks: 15043
Unique aggregates announced from the RIPE address blocks: 10008
RIPE Region origin ASes present in the Internet Routing Table: 3665
RIPE Region origin ASes announcing only one prefix: 1978
RIPE Region transit ASes present in the Internet Routing Table: 669
Average RIPE Region AS path length visible: 5.9
Max RIPE Region AS path length visible: 15
Number of RIPE addresses announced to Internet: 107418144
Equivalent to 6 /8s, 103 /16s and 18 /24s
Percentage of available RIPE address space announced: 71.1
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 1299 1229 958 Telstra Pty Ltd
4538 462 1162 16 China Education and Research
2907 408 1959 372 SINET Japan
703 404 333 314 UUNET Technologies, Inc.
2764 386 361 362 connect.com.au pty ltd
9394 302 113 4 CHINA RAILWAY Internet(CRNET)
7474 295 289 200 Optus Communications Pty Ltd
4755 290 111 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 213 1521 147 Korea Internet Exchange for "
7539 164 237 157 TANet2, sponsored by NSC, TAI
4804 148 84 68 Microplex PTY LTD
9583 142 32 5 Satyam Infoway Ltd.,
9768 136 385 81 Korea Telecom
4713 127 914 104 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 1037 2630 850 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 214 697 171 Sonera Finland Autonomous Sys
5400 200 83 94 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 157 23 147 Romania Data Systems S.A.
2856 131 790 120 BTnet UK Regional network
3303 122 577 122 Swisscom Ltd
12302 120 8 41 MobiFon S.A.
3269 116 693 70 TELECOM ITALIA
8297 114 36 64 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 2142 8438 1515 UUNET Technologies, Inc.
7018 1217 7495 917 AT&T
3908 846 1659 480 Supernet, Inc.
1 836 8123 610 BBN Planet
1239 793 3381 622 Sprint
4323 639 435 252 Time Warner Communications, I
852 634 1128 414 Telus Advanced Communications
7046 626 835 410 UUNET Technologies, Inc.
209 545 1992 314 Qwest
7132 516 543 158 Southwestern Bell Internet Se
3549 478 843 243 Global Crossing
690 438 67 284 Merit Network
2914 422 2176 418 Verio, Inc.
2149 380 209 316 Performance Systems, Inc.
7843 380 306 51 Adelphia Corp.
705 370 115 261 UUNET Technologies, Inc.
3741 345 731 235 The Internet Solution
2386 337 356 192 AT&T Data Communications Serv
6197 330 215 168 BellSouth Network Solutions,
3561 325 2169 292 Cable & Wireless USA
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 846 366 Supernet, Inc.
7132 516 358 Southwestern Bell Internet Se
1221 1299 341 Telstra Pty Ltd
7843 380 329 Adelphia Corp.
7018 1217 300 AT&T
9394 302 298 CHINA RAILWAY Internet(CRNET)
4151 306 290 USDA
6198 309 276 BellSouth Network Solutions,
11371 280 274 Rhythms NetConnections
6347 315 237 SAVVIS Communications Corpora
3549 478 235 Global Crossing
209 545 231 Qwest
7029 243 228 Alltel Information Services,
1 836 226 BBN Planet
852 634 220 Telus Advanced Communications
7046 626 216 UUNET Technologies, Inc.
9443 273 210 Primus Telecommunications
4355 242 205 EarthLink, Inc.
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,
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 /8:19 /9:5 /10:8 /11:14 /12:35
/13:88 /14:232 /15:404 /16:7179 /17:1382 /18:2535
/19:7387 /20:6897 /21:4918 /22:7472 /23:9152 /24:61065
/25:228 /26:267 /27:120 /28:90 /29:111 /30:133
/31:0 /32:47
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
701 1381 2142 UUNET Technologies, Inc.
1221 1156 1299 Telstra Pty Ltd
702 659 1037 UUNET Technologies, Inc.
7018 637 1217 AT&T
3908 582 846 Supernet, Inc.
4323 510 639 Time Warner Communications, I
1239 453 793 Sprint
7046 442 626 UUNET Technologies, Inc.
690 434 438 Merit Network
1 433 836 BBN Planet
852 389 634 Telus Advanced Communications
209 357 545 Qwest
2764 342 386 connect.com.au pty ltd
3549 341 478 Global Crossing
703 326 404 UUNET Technologies, Inc.
705 317 370 UUNET Technologies, Inc.
9394 289 302 CHINA RAILWAY Internet(CRNET)
2149 288 380 Performance Systems, Inc.
6197 279 330 BellSouth Network Solutions,
11371 274 280 Rhythms NetConnections
Number of /24s announced per /8 block (Global)
----------------------------------------------
3:1 9:1 12:488 13:10 15:1 17:5
20:2 24:759 25:1 32:68 38:9 40:6
44:1 57:15 61:284 62:171 63:1883 64:1146
65:1069 66:814 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
139:48 140:185 141:61 142:85 143:37 144:144
145:12 146:217 147:164 148:130 149:91 150:41
151:49 152:344 153:33 154:8 155:90 156:75
157:119 158:73 159:118 160:23 161:55 162:140
163:108 164:92 165:123 166:225 167:187 168:119
169:49 170:290 171:2 189:1 192:5424 193:2205
194:2078 195:799 196:427 198:3681 199:3233 200:2370
201:1 202:3039 203:4540 204:3337 205:2166 206:2576
207:2629 208:2563 209:2807 210:545 211:196 212:867
213:585 214:9 215:18 216:2982 217:444 218:21
End of report
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