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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 18 Mar, 2002
Analysis Summary
----------------
BGP routing table entries examined: 108808
Prefixes after maximum aggregation: 71883
Unique aggregates announced to Internet: 53104
Total ASes present in the Internet Routing Table: 12711
Origin-only ASes present in the Internet Routing Table: 11023
Origin ASes announcing only one prefix: 4831
Transit ASes present in the Internet Routing Table: 1688
Transit-only ASes present in the Internet Routing Table: 53
Average AS path length visible in the Internet Routing Table: 5.3
Max AS path length visible: 19
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: 14
Number of addresses announced to Internet: 1161115424
Equivalent to 69 /8s, 53 /16s and 55 /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: 72721
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 17698
Total APNIC prefixes after maximum aggregation: 10479
Prefixes being announced from the APNIC address blocks: 16359
Unique aggregates announced from the APNIC address blocks: 9966
APNIC Region origin ASes present in the Internet Routing Table: 1459
APNIC Region origin ASes announcing only one prefix: 483
APNIC Region transit ASes present in the Internet Routing Table: 251
Average APNIC Region AS path length visible: 5.2
Max APNIC Region AS path length visible: 15
Number of APNIC addresses announced to Internet: 81799232
Equivalent to 4 /8s, 224 /16s and 40 /24s
Percentage of available APNIC address space announced: 60.5
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: 72704
Total ARIN prefixes after maximum aggregation: 47283
Prefixes being announced from the ARIN address blocks: 51627
Unique aggregates announced from the ARIN address blocks: 17373
ARIN Region origin ASes present in the Internet Routing Table: 7517
ARIN Region origin ASes announcing only one prefix: 2357
ARIN Region transit ASes present in the Internet Routing Table: 748
Average ARIN Region AS path length visible: 5.2
Max ARIN Region AS path length visible: 17
Number of ARIN addresses announced to Internet: 183081024
Equivalent to 10 /8s, 233 /16s and 152 /24s
Percentage of available ARIN address space announced: 68.2
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: 18406
Total RIPE prefixes after maximum aggregation: 14121
Prefixes being announced from the RIPE address blocks: 15139
Unique aggregates announced from the RIPE address blocks: 10053
RIPE Region origin ASes present in the Internet Routing Table: 3681
RIPE Region origin ASes announcing only one prefix: 1991
RIPE Region transit ASes present in the Internet Routing Table: 675
Average RIPE Region AS path length visible: 5.8
Max RIPE Region AS path length visible: 19
Number of RIPE addresses announced to Internet: 107655200
Equivalent to 6 /8s, 106 /16s and 176 /24s
Percentage of available RIPE address space announced: 71.3
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 1285 1228 948 Telstra Pty Ltd
4538 441 1194 15 China Education and Research
703 407 334 316 UUNET Technologies, Inc.
2907 404 1910 370 SINET Japan
2764 385 361 361 connect.com.au pty ltd
7474 298 289 202 Optus Communications Pty Ltd
4755 297 111 83 Videsh Sanchar Nigam Ltd. Aut
4134 274 1962 97 Data Communications Bureau
9443 274 44 63 Primus Telecommunications
9394 255 113 4 CHINA RAILWAY Internet(CRNET)
17557 238 15 100 Pakistan Telecom
4766 208 1516 146 Korea Internet Exchange for "
4804 165 84 68 Microplex PTY LTD
9583 149 32 5 Satyam Infoway Ltd.,
9768 137 385 82 Korea Telecom
4713 128 922 105 NTT Communications Corporatio
7657 123 22 86 The Internet Group Limited
4780 118 186 40 Digital United Inc.
17676 117 1872 17 XTAGE CORPORATION
9800 114 194 23 CHINA UNICOM
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 1031 2611 842 UUNET Technologies, Inc.
3301 394 924 349 TeliaNet Sweden
5515 272 697 171 Sonera Finland Autonomous Sys
3215 259 570 157 France Telecom / &Equant
1257 235 486 231 SWIPnet Swedish IP Network
680 231 2147 230 DFN-IP service G-WiN
3320 197 1964 172 Deutsche Telekom AG
5400 197 83 92 Concert European Core Network
786 182 1874 182 The JANET IP Service
719 163 289 118 LANLINK autonomous system
8708 156 23 144 Romania Data Systems S.A.
2856 129 788 118 BTnet UK Regional network
3303 124 579 124 Swisscom Ltd
12302 122 8 43 MobiFon S.A.
8297 118 37 66 Teleglobe Autonomous System i
3269 117 694 71 TELECOM ITALIA
517 102 227 100 KPNQwest Germany GmbH
9051 101 6 25 INCONET Autonomous System
2874 97 100 37 Global One Services AB
5511 92 192 80 France Telecom
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
701 2126 8337 1502 UUNET Technologies, Inc.
7018 1222 7527 914 AT&T
3908 842 1675 480 Supernet, Inc.
1 840 8108 610 BBN Planet
1239 800 3368 628 Sprint
4323 642 436 254 Time Warner Communications, I
852 625 1112 413 Telus Advanced Communications
7046 621 835 406 UUNET Technologies, Inc.
209 556 1993 320 Qwest
7132 518 545 158 Southwestern Bell Internet Se
3549 486 843 244 Global Crossing
690 436 67 282 Merit Network
2914 422 2177 419 Verio, Inc.
7843 386 313 50 Adelphia Corp.
705 382 116 274 UUNET Technologies, Inc.
2149 369 208 308 Performance Systems, Inc.
3741 345 731 235 The Internet Solution
2386 328 372 186 AT&T Data Communications Serv
6197 326 215 168 BellSouth Network Solutions,
577 320 602 214 Bell Advanced Communications
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
4538 441 426 China Education and Research
4323 642 388 Time Warner Communications, I
3908 842 362 Supernet, Inc.
7132 518 360 Southwestern Bell Internet Se
1221 1285 337 Telstra Pty Ltd
7843 386 336 Adelphia Corp.
7018 1222 308 AT&T
4151 298 282 USDA
6198 309 276 BellSouth Network Solutions,
11371 277 271 Rhythms NetConnections
9394 255 251 CHINA RAILWAY Internet(CRNET)
3549 486 242 Global Crossing
6347 318 237 SAVVIS Communications Corpora
209 556 236 Qwest
1 840 230 BBN Planet
7029 245 230 Alltel Information Services,
7046 621 215 UUNET Technologies, Inc.
4755 297 214 Videsh Sanchar Nigam Ltd. Aut
852 625 212 Telus Advanced Communications
9443 274 211 Primus Telecommunications
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
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
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
/13:89 /14:230 /15:404 /16:7157 /17:1382 /18:2550
/19:7402 /20:6897 /21:4866 /22:7451 /23:9091 /24:60481
/25:193 /26:229 /27:90 /28:66 /29:81 /30:55
/31:0 /32:14
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
701 1387 2126 UUNET Technologies, Inc.
1221 1142 1285 Telstra Pty Ltd
702 656 1031 UUNET Technologies, Inc.
7018 641 1222 AT&T
3908 576 842 Supernet, Inc.
4323 512 642 Time Warner Communications, I
1239 458 800 Sprint
7046 439 621 UUNET Technologies, Inc.
1 432 840 BBN Planet
690 432 436 Merit Network
852 380 625 Telus Advanced Communications
209 369 556 Qwest
3549 349 486 Global Crossing
2764 341 385 connect.com.au pty ltd
703 328 407 UUNET Technologies, Inc.
705 328 382 UUNET Technologies, Inc.
2149 278 369 Performance Systems, Inc.
6197 275 326 BellSouth Network Solutions,
11371 271 277 Rhythms NetConnections
7066 265 294 Virginia Polytechnic Institut
Number of /24s announced per /8 block (Global)
----------------------------------------------
3:1 9:1 12:480 13:10 15:1 17:5
20:2 24:760 25:1 32:68 38:9 40:6
44:1 57:14 61:275 62:171 63:1886 64:1164
65:1073 66:821 67:53 68:4 80:207 81:8
128:64 129:114 130:23 131:55 132:11 133:3
134:104 135:10 136:206 137:102 138:147 139:48
140:153 141:64 142:70 143:37 144:144 145:11
146:212 147:156 148:131 149:92 150:41 151:50
152:342 153:33 154:7 155:87 156:76 157:115
158:73 159:125 160:24 161:55 162:139 163:99
164:91 165:117 166:223 167:191 168:96 169:50
170:283 171:2 192:5356 193:2217 194:2108 195:798
196:406 198:3664 199:3194 200:2357 201:1 202:3019
203:4523 204:3262 205:2142 206:2434 207:2609 208:2572
209:2793 210:542 211:201 212:877 213:591 214:9
215:18 216:3008 217:462 218:21
End of report
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