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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 Fri 22 Mar, 2002
Analysis Summary
----------------
BGP routing table entries examined: 109891
Prefixes after maximum aggregation: 72214
Unique aggregates announced to Internet: 53339
Total ASes present in the Internet Routing Table: 12780
Origin-only ASes present in the Internet Routing Table: 11062
Origin ASes announcing only one prefix: 4844
Transit ASes present in the Internet Routing Table: 1718
Transit-only ASes present in the Internet Routing Table: 53
Average AS path length visible in the Internet Routing Table: 5.4
Max AS path length visible: 19
Illegal AS announcements present in the Routing Table: 2
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: 1162074792
Equivalent to 69 /8s, 67 /16s and 218 /24s
Percentage of available address space announced: 31.4
Percentage of allocated address space announced: 59.3
Percentage of available address space allocated: 52.8
Total number of prefixes smaller than registry allocations: 73575
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 17991
Total APNIC prefixes after maximum aggregation: 10672
Prefixes being announced from the APNIC address blocks: 16529
Unique aggregates announced from the APNIC address blocks: 10071
APNIC Region origin ASes present in the Internet Routing Table: 1468
APNIC Region origin ASes announcing only one prefix: 479
APNIC Region transit ASes present in the Internet Routing Table: 255
Average APNIC Region AS path length visible: 5.3
Max APNIC Region AS path length visible: 15
Number of APNIC addresses announced to Internet: 81960000
Equivalent to 4 /8s, 226 /16s and 156 /24s
Percentage of available APNIC address space announced: 60.6
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: 73480
Total ARIN prefixes after maximum aggregation: 47372
Prefixes being announced from the ARIN address blocks: 51911
Unique aggregates announced from the ARIN address blocks: 17427
ARIN Region origin ASes present in the Internet Routing Table: 7566
ARIN Region origin ASes announcing only one prefix: 2376
ARIN Region transit ASes present in the Internet Routing Table: 768
Average ARIN Region AS path length visible: 5.2
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 183322564
Equivalent to 10 /8s, 237 /16s and 71 /24s
Percentage of available ARIN address space announced: 68.3
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: 18420
Total RIPE prefixes after maximum aggregation: 14170
Prefixes being announced from the RIPE address blocks: 15149
Unique aggregates announced from the RIPE address blocks: 10079
RIPE Region origin ASes present in the Internet Routing Table: 3692
RIPE Region origin ASes announcing only one prefix: 1989
RIPE Region transit ASes present in the Internet Routing Table: 682
Average RIPE Region AS path length visible: 5.8
Max RIPE Region AS path length visible: 19
Number of RIPE addresses announced to Internet: 107900192
Equivalent to 6 /8s, 110 /16s and 109 /24s
Percentage of available RIPE address space announced: 71.5
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 1283 1228 949 Telstra Pty Ltd
4538 446 1194 17 China Education and Research
703 409 334 317 UUNET Technologies, Inc.
2907 407 1910 372 SINET Japan
2764 384 361 360 connect.com.au pty ltd
7474 300 289 204 Optus Communications Pty Ltd
4755 290 113 84 Videsh Sanchar Nigam Ltd. Aut
4134 274 1962 96 Data Communications Bureau
9443 274 44 63 Primus Telecommunications
9394 259 113 4 CHINA RAILWAY Internet(CRNET)
17557 246 16 94 Pakistan Telecom
4766 206 1516 146 Korea Internet Exchange for "
7539 166 239 160 TANet2, sponsored by NSC, TAI
4804 165 84 68 Microplex PTY LTD
9583 146 31 14 Satyam Infoway Ltd.,
9768 138 385 82 Korea Telecom
7657 122 22 85 The Internet Group Limited
4713 121 907 105 NTT Communications Corporatio
4780 118 186 40 Digital United Inc.
17676 118 1888 16 XTAGE CORPORATION
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 1029 2596 845 UUNET Technologies, Inc.
3301 394 924 349 TeliaNet Sweden
3215 266 586 158 France Telecom / &Equant
5515 261 696 167 Sonera Finland Autonomous Sys
680 232 2149 231 DFN-IP service G-WiN
1257 224 464 220 SWIPnet Swedish IP Network
5400 198 83 93 Concert European Core Network
3320 197 1964 172 Deutsche Telekom AG
786 182 1874 182 The JANET IP Service
719 161 288 118 LANLINK autonomous system
8708 158 23 146 Romania Data Systems S.A.
2856 129 788 118 BTnet UK Regional network
3303 125 581 124 Swisscom Ltd
12302 124 8 45 MobiFon S.A.
8297 120 53 67 Teleglobe Autonomous System i
3269 117 694 71 TELECOM ITALIA
517 102 226 98 KPNQwest Germany GmbH
9051 101 6 25 INCONET Autonomous System
5511 100 193 89 France Telecom
2874 97 100 37 Global One Services AB
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
701 2113 8400 1499 UUNET Technologies, Inc.
7018 1226 7529 913 AT&T
3908 850 1675 478 Supernet, Inc.
1 813 8123 608 BBN Planet
1239 806 3368 631 Sprint
4323 633 436 253 Time Warner Communications, I
852 628 1127 413 Telus Advanced Communications
7046 604 834 392 UUNET Technologies, Inc.
209 555 1992 319 Qwest
7132 518 545 158 Southwestern Bell Internet Se
3549 500 844 255 Global Crossing
690 462 69 305 Merit Network
2914 412 2169 409 Verio, Inc.
7843 400 313 50 Adelphia Corp.
705 379 115 271 UUNET Technologies, Inc.
2149 378 225 315 Performance Systems, Inc.
3741 343 731 233 The Internet Solution
6197 329 217 170 BellSouth Network Solutions,
3561 318 2151 285 Cable & Wireless USA
6347 316 370 78 SAVVIS Communications Corpora
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
4538 446 429 China Education and Research
4323 633 380 Time Warner Communications, I
3908 850 372 Supernet, Inc.
7132 518 360 Southwestern Bell Internet Se
7843 400 350 Adelphia Corp.
1221 1283 334 Telstra Pty Ltd
7018 1226 313 AT&T
4151 306 290 USDA
6198 308 277 BellSouth Network Solutions,
11371 277 271 Rhythms NetConnections
9394 259 255 CHINA RAILWAY Internet(CRNET)
3549 500 245 Global Crossing
6347 316 238 SAVVIS Communications Corpora
209 555 236 Qwest
7029 245 230 Alltel Information Services,
852 628 215 Telus Advanced Communications
7046 604 212 UUNET Technologies, Inc.
9443 274 211 Primus Telecommunications
4755 290 206 Videsh Sanchar Nigam Ltd. Aut
1 813 205 BBN Planet
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
112 UNALLOCATED 192.175.48.0/24 3557 Vixie Enterprises
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
/13:88 /14:229 /15:404 /16:7185 /17:1389 /18:2555
/19:7414 /20:6907 /21:4912 /22:7515 /23:9136 /24:61152
/25:222 /26:239 /27:105 /28:90 /29:96 /30:130
/31:0 /32:43
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
701 1377 2113 UUNET Technologies, Inc.
1221 1147 1283 Telstra Pty Ltd
702 654 1029 UUNET Technologies, Inc.
7018 641 1226 AT&T
3908 582 850 Supernet, Inc.
4323 504 633 Time Warner Communications, I
1239 464 806 Sprint
690 457 462 Merit Network
7046 420 604 UUNET Technologies, Inc.
1 405 813 BBN Planet
852 381 628 Telus Advanced Communications
209 365 555 Qwest
3549 362 500 Global Crossing
2764 340 384 connect.com.au pty ltd
703 330 409 UUNET Technologies, Inc.
705 327 379 UUNET Technologies, Inc.
2149 286 378 Performance Systems, Inc.
6197 278 329 BellSouth Network Solutions,
7066 272 301 Virginia Polytechnic Institut
11371 271 277 Rhythms NetConnections
Number of /24s announced per /8 block (Global)
----------------------------------------------
3:1 9:1 12:486 13:10 15:2 17:5
20:2 24:743 25:1 32:68 38:9 40:6
44:1 57:14 61:272 62:166 63:1897 64:1175
65:1093 66:808 67:53 68:3 80:220 81:6
128:64 129:130 130:23 131:57 132:10 133:3
134:127 135:10 136:283 137:102 138:148 139:49
140:187 141:90 142:84 143:38 144:145 145:12
146:220 147:147 148:135 149:92 150:39 151:50
152:327 153:33 154:5 155:90 156:75 157:118
158:72 159:125 160:26 161:55 162:139 163:104
164:103 165:123 166:221 167:191 168:90 169:51
170:292 171:2 192:5438 193:2222 194:2104 195:794
196:428 198:3729 199:3207 200:2418 201:1 202:3079
203:4561 204:3297 205:2145 206:2491 207:2611 208:2571
209:2780 210:572 211:202 212:858 213:596 214:9
215:19 216:3015 217:462 218:14
End of report
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