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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 Tue 29 Jan, 2002
Analysis Summary
----------------
BGP routing table entries examined: 107741
Prefixes after maximum aggregation: 71883
Unique aggregates announced to Internet: 52467
Total ASes present in the Internet Routing Table: 12448
Origin-only ASes present in the Internet Routing Table: 10768
Origin ASes announcing only one prefix: 4690
Transit ASes present in the Internet Routing Table: 1680
Transit-only ASes present in the Internet Routing Table: 57
Average AS path length visible in the Internet Routing Table: 5.3
Max AS path length visible: 16
Illegal AS announcements present in the Routing Table: 4
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: 1162682760
Equivalent to 69 /8s, 77 /16s and 33 /24s
Percentage of available address space announced: 31.4
Percentage of allocated address space announced: 59.4
Percentage of available address space allocated: 52.8
Total number of prefixes smaller than registry allocations: 71821
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 17281
Total APNIC prefixes after maximum aggregation: 10650
Prefixes being announced from the APNIC address blocks: 15740
Unique aggregates announced from the APNIC address blocks: 9848
APNIC Region origin ASes present in the Internet Routing Table: 1440
APNIC Region origin ASes announcing only one prefix: 477
APNIC Region transit ASes present in the Internet Routing Table: 254
Average APNIC Region AS path length visible: 5.3
Max APNIC Region AS path length visible: 15
Number of APNIC addresses announced to Internet: 78863936
Equivalent to 4 /8s, 179 /16s and 94 /24s
Percentage of available APNIC address space announced: 58.3
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: 72557
Total ARIN prefixes after maximum aggregation: 47295
Prefixes being announced from the ARIN address blocks: 51253
Unique aggregates announced from the ARIN address blocks: 17136
ARIN Region origin ASes present in the Internet Routing Table: 7364
ARIN Region origin ASes announcing only one prefix: 2276
ARIN Region transit ASes present in the Internet Routing Table: 757
Average ARIN Region AS path length visible: 5.2
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 184896452
Equivalent to 11 /8s, 5 /16s and 75 /24s
Percentage of available ARIN address space announced: 68.9
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: 17902
Total RIPE prefixes after maximum aggregation: 13938
Prefixes being announced from the RIPE address blocks: 14689
Unique aggregates announced from the RIPE address blocks: 9826
RIPE Region origin ASes present in the Internet Routing Table: 3586
RIPE Region origin ASes announcing only one prefix: 1937
RIPE Region transit ASes present in the Internet Routing Table: 656
Average RIPE Region AS path length visible: 5.8
Max RIPE Region AS path length visible: 15
Number of RIPE addresses announced to Internet: 106219520
Equivalent to 6 /8s, 84 /16s and 200 /24s
Percentage of available RIPE address space announced: 70.3
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 1337 1260 976 Telstra Pty Ltd
4538 450 1162 16 China Education and Research
703 402 342 306 UUNET Technologies, Inc.
2764 396 377 370 connect.com.au pty ltd
2907 394 1893 364 SINET Japan
7474 299 285 204 Optus Communications Pty Ltd
4755 298 113 87 Videsh Sanchar Nigam Ltd. Aut
4134 268 1858 100 Data Communications Bureau
4766 208 1394 147 Korea Internet Exchange for "
17557 194 15 86 Pakistan Telecom
9443 160 44 59 Primus Telecommunications
7539 153 137 152 TANet2, sponsored by NSC, TAI
9768 145 385 88 Korea Telecom
4740 143 34 117 OzEmail ISP
1659 142 908 33 Taiwan Academic Network (TANe
9583 138 32 5 Satyam Infoway Ltd.,
7657 125 22 85 The Internet Group Limited
4713 117 894 103 NTT Communications Corporatio
4780 116 186 40 Digital United Inc.
9800 113 193 22 CHINA UNICOM
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 1117 2622 863 UUNET Technologies, Inc.
3301 396 924 350 TeliaNet Sweden
1257 253 487 249 SWIPnet Swedish IP Network
3215 236 562 153 France Telecom / &Equant
680 235 2149 233 DFN-IP service G-WiN
5515 218 705 175 Sonera Finland Autonomous Sys
5400 199 82 96 Concert European Core Network
3320 194 1962 170 Deutsche Telekom AG
786 173 1777 173 The JANET IP Service
719 165 289 119 LANLINK autonomous system
8708 150 20 140 Romania Data Systems S.A.
2856 131 790 120 BTnet UK Regional network
3303 124 575 124 Swisscom Ltd
3269 118 695 72 TELECOM ITALIA
8297 117 40 66 Teleglobe Autonomous System i
12302 114 7 35 MobiFon S.A.
517 99 227 97 KPNQwest Germany GmbH
1290 94 411 69 PSINet UK Ltd.
1267 92 1471 42 Infostrada S.p.A.
5511 91 192 80 France Telecom
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
701 2082 8302 1502 UUNET Technologies, Inc.
7018 1744 7554 981 AT&T
1 838 8152 611 BBN Planet
3908 790 1656 466 Supernet, Inc.
1239 780 3157 607 Sprint
7046 638 837 419 UUNET Technologies, Inc.
4323 616 414 220 Time Warner Communications, I
852 565 978 364 Telus Advanced Communications
209 515 1875 294 Qwest
690 495 72 309 Merit Network
2914 452 2194 421 Verio, Inc.
7132 452 504 162 Southwestern Bell Internet Se
3549 427 835 222 Global Crossing
705 411 134 281 UUNET Technologies, Inc.
2386 387 354 244 AT&T Data Communications Serv
2149 384 213 322 Performance Systems, Inc.
3561 377 2235 327 Cable & Wireless USA
3967 374 372 201 Exodus Communication
577 349 604 219 Bell Advanced Communications
3741 349 731 240 The Internet Solution
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
7018 1744 763 AT&T
4538 450 434 China Education and Research
4323 616 396 Time Warner Communications, I
1221 1337 361 Telstra Pty Ltd
3908 790 324 Supernet, Inc.
4151 339 323 USDA
7132 452 290 Southwestern Bell Internet Se
11371 278 271 Rhythms NetConnections
702 1117 254 UUNET Technologies, Inc.
6347 314 233 SAVVIS Communications Corpora
1 838 227 BBN Planet
209 515 221 Qwest
7843 260 221 Adelphia Corp.
7046 638 219 UUNET Technologies, Inc.
4755 298 211 Videsh Sanchar Nigam Ltd. Aut
4355 237 207 EarthLink, Inc.
3549 427 205 Global Crossing
852 565 201 Telus Advanced Communications
6517 221 193 Yipes Communications, Inc.
6172 240 189 @Home Network
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
65400 PRIVATE 66.7.130.0/24 6517 Yipes Communications
23098 UNALLOCATED 144.9.72.0/24 12179 InterNAP Network Ser
23098 UNALLOCATED 144.9.73.0/24 12179 InterNAP Network Ser
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
126.0.0.0/8 7336 Compass Communications
132.0.0.0/10 568 DISO-UNRRA
134.137.0.0/16 400 Headquarters Standard Systems
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 /9:6 /10:7 /11:12 /12:37
/13:91 /14:231 /15:390 /16:7141 /17:1414 /18:2486
/19:7304 /20:6670 /21:4821 /22:7277 /23:8945 /24:60041
/25:214 /26:207 /27:110 /28:83 /29:57 /30:135
/31:0 /32:44
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
701 1332 2082 UUNET Technologies, Inc.
1221 1187 1337 Telstra Pty Ltd
7018 1156 1744 AT&T
702 738 1117 UUNET Technologies, Inc.
3908 543 790 Supernet, Inc.
4323 504 616 Time Warner Communications, I
690 491 495 Merit Network
7046 467 638 UUNET Technologies, Inc.
1239 462 780 Sprint
1 433 838 BBN Planet
852 352 565 Telus Advanced Communications
2764 351 396 connect.com.au pty ltd
705 345 411 UUNET Technologies, Inc.
209 338 515 Qwest
703 328 402 UUNET Technologies, Inc.
2386 311 387 AT&T Data Communications Serv
3549 295 427 Global Crossing
4151 293 339 USDA
2149 290 384 Performance Systems, Inc.
7066 275 304 Virginia Polytechnic Institut
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:2 9:1 12:736 13:10 15:1 17:5
20:1 24:703 25:1 32:181 38:12 40:5
44:2 57:14 61:212 62:165 63:1874 64:1104
65:997 66:611 67:36 68:20 80:155 81:4
128:62 129:126 130:22 131:53 132:13 133:2
134:121 135:10 136:128 137:104 138:61 139:29
140:101 141:59 142:65 143:38 144:56 145:12
146:213 147:60 148:140 149:86 150:39 151:43
152:378 153:34 154:8 155:82 156:81 157:123
158:73 159:86 160:26 161:54 162:96 163:122
164:90 165:125 166:225 167:161 168:118 169:47
170:287 171:4 192:5432 193:2124 194:2027 195:795
196:436 198:3740 199:3254 200:2319 201:1 202:2892
203:4529 204:3301 205:2144 206:2615 207:2659 208:2602
209:2855 210:542 211:151 212:874 213:589 214:7
215:16 216:2972 217:438 218:12
End of report
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