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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 Thu 07 Mar, 2002
Analysis Summary
----------------
BGP routing table entries examined: 109335
Prefixes after maximum aggregation: 72262
Unique aggregates announced to Internet: 52029
Total ASes present in the Internet Routing Table: 12701
Origin-only ASes present in the Internet Routing Table: 11006
Origin ASes announcing only one prefix: 4810
Transit ASes present in the Internet Routing Table: 1695
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: 18
Illegal AS announcements present in the Routing Table: 12
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: 1166784552
Equivalent to 69 /8s, 139 /16s and 184 /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: 73218
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 17834
Total APNIC prefixes after maximum aggregation: 10710
Prefixes being announced from the APNIC address blocks: 16356
Unique aggregates announced from the APNIC address blocks: 10021
APNIC Region origin ASes present in the Internet Routing Table: 1456
APNIC Region origin ASes announcing only one prefix: 481
APNIC Region transit ASes present in the Internet Routing Table: 250
Average APNIC Region AS path length visible: 5.3
Max APNIC Region AS path length visible: 15
Number of APNIC addresses announced to Internet: 81063488
Equivalent to 4 /8s, 212 /16s and 238 /24s
Percentage of available APNIC address space announced: 59.9
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: 73225
Total ARIN prefixes after maximum aggregation: 47382
Prefixes being announced from the ARIN address blocks: 51744
Unique aggregates announced from the ARIN address blocks: 16283
ARIN Region origin ASes present in the Internet Routing Table: 7511
ARIN Region origin ASes announcing only one prefix: 2347
ARIN Region transit ASes present in the Internet Routing Table: 763
Average ARIN Region AS path length visible: 5.3
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 189849924
Equivalent to 11 /8s, 80 /16s and 225 /24s
Percentage of available ARIN address space announced: 70.7
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: 18271
Total RIPE prefixes after maximum aggregation: 14170
Prefixes being announced from the RIPE address blocks: 15010
Unique aggregates announced from the RIPE address blocks: 9995
RIPE Region origin ASes present in the Internet Routing Table: 3676
RIPE Region origin ASes announcing only one prefix: 1982
RIPE Region transit ASes present in the Internet Routing Table: 670
Average RIPE Region AS path length visible: 5.9
Max RIPE Region AS path length visible: 18
Number of RIPE addresses announced to Internet: 107180576
Equivalent to 6 /8s, 99 /16s and 114 /24s
Percentage of available RIPE address space announced: 71.0
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 1301 1229 959 Telstra Pty Ltd
4538 462 1162 16 China Education and Research
2907 407 1959 371 SINET Japan
703 403 349 313 UUNET Technologies, Inc.
2764 385 360 361 connect.com.au pty ltd
7474 299 289 203 Optus Communications Pty Ltd
9394 296 112 3 CHINA RAILWAY Internet(CRNET)
4755 291 109 84 Videsh Sanchar Nigam Ltd. Aut
4134 272 1882 95 Data Communications Bureau
9443 272 44 63 Primus Telecommunications
17557 233 15 100 Pakistan Telecom
4766 213 1521 147 Korea Internet Exchange for "
7539 160 220 155 TANet2, sponsored by NSC, TAI
4804 148 84 68 Microplex PTY LTD
9768 147 385 89 Korea Telecom
9583 133 28 46 Satyam Infoway Ltd.,
4713 127 914 104 NTT Communications Corporatio
7657 122 22 85 The Internet Group Limited
4780 116 186 40 Digital United Inc.
17676 116 1856 18 XTAGE CORPORATION
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 1064 2644 852 UUNET Technologies, Inc.
3301 397 924 351 TeliaNet Sweden
3215 262 570 157 France Telecom / &Equant
1257 237 487 233 SWIPnet Swedish IP Network
680 231 2147 230 DFN-IP service G-WiN
5515 216 697 173 Sonera Finland Autonomous Sys
5400 201 83 94 Concert European Core Network
3320 196 1964 171 Deutsche Telekom AG
786 182 1874 182 The JANET IP Service
8708 162 23 148 Romania Data Systems S.A.
719 132 289 118 LANLINK autonomous system
2856 131 790 120 BTnet UK Regional network
3303 123 577 123 Swisscom Ltd
12302 117 7 38 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 99 226 97 KPNQwest Germany GmbH
2874 95 100 35 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 2147 8439 1519 UUNET Technologies, Inc.
7018 1207 7493 909 AT&T
3908 849 1659 481 Supernet, Inc.
1 835 8122 609 BBN Planet
1239 788 3364 621 Sprint
4323 639 435 252 Time Warner Communications, I
852 632 1120 411 Telus Advanced Communications
7046 626 835 410 UUNET Technologies, Inc.
209 539 1975 310 Qwest
3549 478 843 243 Global Crossing
7132 456 511 165 Southwestern Bell Internet Se
690 438 67 285 Merit Network
2914 422 2173 416 Verio, Inc.
7843 384 305 50 Adelphia Corp.
2149 375 193 311 Performance Systems, Inc.
705 372 114 263 UUNET Technologies, Inc.
3741 344 731 235 The Internet Solution
2386 338 356 193 AT&T Data Communications Serv
6197 330 215 168 BellSouth Network Solutions,
3561 328 2171 294 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 849 368 Supernet, Inc.
1221 1301 342 Telstra Pty Ltd
7843 384 334 Adelphia Corp.
7018 1207 298 AT&T
9394 296 293 CHINA RAILWAY Internet(CRNET)
7132 456 291 Southwestern Bell Internet Se
4151 304 288 USDA
6198 309 276 BellSouth Network Solutions,
11371 270 264 Rhythms NetConnections
6347 315 237 SAVVIS Communications Corpora
3549 478 235 Global Crossing
209 539 229 Qwest
7029 242 227 Alltel Information Services,
1 835 226 BBN Planet
852 632 221 Telus Advanced Communications
7046 626 216 UUNET Technologies, Inc.
702 1064 212 UUNET Technologies, Inc.
9443 272 209 Primus Telecommunications
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,
65535 PRIVATE 66.219.64.0/19 14989 Broadview Networks
23336 UNALLOCATED 204.182.49.0/24 701 UUNET Technologies,
5757 UNALLOCATED 207.19.224.0/24 701 UUNET Technologies,
65534 PRIVATE 209.242.166.0/26 195 San Diego Supercompu
65534 PRIVATE 209.242.166.72/29 195 San Diego Supercompu
65534 PRIVATE 209.242.166.80/28 195 San Diego Supercompu
54600 RESERVED 212.113.101.0/24 2118 EUnet/RELCOM Autonom
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 /8:19 /9:5 /10:8 /11:14 /12:35
/13:88 /14:231 /15:403 /16:7169 /17:1381 /18:2529
/19:7371 /20:6854 /21:4872 /22:7449 /23:9139 /24:60794
/25:227 /26:265 /27:117 /28:91 /29:93 /30:131
/31:0 /32:50
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
701 1384 2147 UUNET Technologies, Inc.
1221 1157 1301 Telstra Pty Ltd
702 685 1064 UUNET Technologies, Inc.
7018 628 1207 AT&T
3908 587 849 Supernet, Inc.
4323 510 639 Time Warner Communications, I
1239 451 788 Sprint
7046 442 626 UUNET Technologies, Inc.
690 434 438 Merit Network
1 433 835 BBN Planet
852 389 632 Telus Advanced Communications
209 355 539 Qwest
2764 341 385 connect.com.au pty ltd
3549 341 478 Global Crossing
703 324 403 UUNET Technologies, Inc.
705 318 372 UUNET Technologies, Inc.
2149 287 375 Performance Systems, Inc.
9394 284 296 CHINA RAILWAY Internet(CRNET)
6197 279 330 BellSouth Network Solutions,
7066 272 301 Virginia Polytechnic Institut
Number of /24s announced per /8 block (Global)
----------------------------------------------
3:1 9:1 12:488 13:10 15:1 17:5
20:2 24:762 25:1 32:68 38:9 40:6
44:1 57:15 61:283 62:187 63:1877 64:1136
65:1059 66:759 67:51 68:7 80:208 81:5
128:63 129:119 130:23 131:57 132:11 133:3
134:125 135:10 136:250 137:102 138:146 139:48
140:185 141:61 142:82 143:37 144:152 145:13
146:217 147:163 148:129 149:91 150:41 151:48
152:345 153:33 154:8 155:90 156:75 157:119
158:73 159:118 160:23 161:55 162:140 163:118
164:91 165:118 166:224 167:186 168:120 169:49
170:291 171:2 189:1 192:5424 193:2201 194:2068
195:796 196:433 198:3680 199:3240 200:2377 201:1
202:2996 203:4544 204:3330 205:2170 206:2512 207:2635
208:2558 209:2799 210:542 211:195 212:857 213:584
214:9 215:18 216:2975 217:432 218:21
End of report
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