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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 25 Jan, 2002
Analysis Summary
----------------
BGP routing table entries examined: 107663
Prefixes after maximum aggregation: 71804
Unique aggregates announced to Internet: 52392
Total ASes present in the Internet Routing Table: 12434
Origin-only ASes present in the Internet Routing Table: 10766
Origin ASes announcing only one prefix: 4691
Transit ASes present in the Internet Routing Table: 1668
Transit-only ASes present in the Internet Routing Table: 58
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: 3
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: 1162994312
Equivalent to 69 /8s, 81 /16s and 226 /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: 71787
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 17208
Total APNIC prefixes after maximum aggregation: 10606
Prefixes being announced from the APNIC address blocks: 15704
Unique aggregates announced from the APNIC address blocks: 9831
APNIC Region origin ASes present in the Internet Routing Table: 1437
APNIC Region origin ASes announcing only one prefix: 474
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: 78680640
Equivalent to 4 /8s, 176 /16s and 146 /24s
Percentage of available APNIC address space announced: 58.2
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: 72511
Total ARIN prefixes after maximum aggregation: 47259
Prefixes being announced from the ARIN address blocks: 51232
Unique aggregates announced from the ARIN address blocks: 17134
ARIN Region origin ASes present in the Internet Routing Table: 7357
ARIN Region origin ASes announcing only one prefix: 2281
ARIN Region transit ASes present in the Internet Routing Table: 754
Average ARIN Region AS path length visible: 5.2
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 184667588
Equivalent to 11 /8s, 1 /16s and 205 /24s
Percentage of available ARIN address space announced: 68.8
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: 17944
Total RIPE prefixes after maximum aggregation: 13939
Prefixes being announced from the RIPE address blocks: 14708
Unique aggregates announced from the RIPE address blocks: 9813
RIPE Region origin ASes present in the Internet Routing Table: 3581
RIPE Region origin ASes announcing only one prefix: 1936
RIPE Region transit ASes present in the Internet Routing Table: 653
Average RIPE Region AS path length visible: 5.8
Max RIPE Region AS path length visible: 15
Number of RIPE addresses announced to Internet: 106246912
Equivalent to 6 /8s, 85 /16s and 51 /24s
Percentage of available RIPE address space announced: 70.4
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 1336 1258 976 Telstra Pty Ltd
4538 449 1162 16 China Education and Research
703 401 342 305 UUNET Technologies, Inc.
2764 397 377 371 connect.com.au pty ltd
2907 395 1909 365 SINET Japan
7474 300 286 205 Optus Communications Pty Ltd
4755 299 113 88 Videsh Sanchar Nigam Ltd. Aut
4134 268 1858 100 Data Communications Bureau
4766 198 1393 145 Korea Internet Exchange for "
17557 189 14 87 Pakistan Telecom
9443 160 44 59 Primus Telecommunications
4740 147 34 121 OzEmail ISP
9768 145 385 88 Korea Telecom
1659 143 908 33 Taiwan Academic Network (TANe
9583 138 32 5 Satyam Infoway Ltd.,
7657 125 22 85 The Internet Group Limited
7539 122 132 121 TANet2, sponsored by NSC, TAI
4780 116 186 40 Digital United Inc.
4713 115 894 102 NTT Communications Corporatio
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
3320 190 1961 168 Deutsche Telekom AG
5400 187 77 93 Concert European Core Network
786 182 1874 182 The JANET IP Service
719 164 289 118 LANLINK autonomous system
8708 150 20 140 Romania Data Systems S.A.
2856 135 775 124 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 115 7 36 MobiFon S.A.
517 103 227 101 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 2086 8305 1511 UUNET Technologies, Inc.
7018 1743 7561 974 AT&T
1 843 8264 611 BBN Planet
3908 785 1656 463 Supernet, Inc.
1239 781 3193 610 Sprint
7046 652 837 428 UUNET Technologies, Inc.
4323 621 412 219 Time Warner Communications, I
852 564 978 364 Telus Advanced Communications
209 514 1875 293 Qwest
690 510 74 313 Merit Network
2914 453 2193 422 Verio, Inc.
7132 449 504 159 Southwestern Bell Internet Se
705 431 193 285 UUNET Technologies, Inc.
3549 427 834 219 Global Crossing
2149 396 214 332 Performance Systems, Inc.
2386 386 354 243 AT&T Data Communications Serv
3967 378 372 204 Exodus Communication
3561 377 2236 328 Cable & Wireless USA
577 353 604 221 Bell Advanced Communications
3741 350 731 239 The Internet Solution
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
7018 1743 769 AT&T
4538 449 433 China Education and Research
4323 621 402 Time Warner Communications, I
1221 1336 360 Telstra Pty Ltd
3908 785 322 Supernet, Inc.
4151 337 321 USDA
7132 449 290 Southwestern Bell Internet Se
11371 278 271 Rhythms NetConnections
702 1117 254 UUNET Technologies, Inc.
6347 318 235 SAVVIS Communications Corpora
1 843 232 BBN Planet
7046 652 224 UUNET Technologies, Inc.
209 514 221 Qwest
7843 256 216 Adelphia Corp.
4755 299 211 Videsh Sanchar Nigam Ltd. Aut
3549 427 208 Global Crossing
4355 237 207 EarthLink, Inc.
852 564 200 Telus Advanced Communications
690 510 197 Merit Network
6172 240 189 @Home Network
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
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
/13:92 /14:231 /15:390 /16:7142 /17:1412 /18:2492
/19:7310 /20:6668 /21:4821 /22:7286 /23:8942 /24:59943
/25:216 /26:205 /27:111 /28:84 /29:58 /30:135
/31:0 /32:45
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
701 1332 2086 UUNET Technologies, Inc.
1221 1187 1336 Telstra Pty Ltd
7018 1154 1743 AT&T
702 739 1117 UUNET Technologies, Inc.
3908 538 785 Supernet, Inc.
4323 511 621 Time Warner Communications, I
690 506 510 Merit Network
7046 483 652 UUNET Technologies, Inc.
1239 457 781 Sprint
1 435 843 BBN Planet
2764 352 397 connect.com.au pty ltd
852 351 564 Telus Advanced Communications
705 350 431 UUNET Technologies, Inc.
209 340 514 Qwest
703 327 401 UUNET Technologies, Inc.
2386 310 386 AT&T Data Communications Serv
2149 299 396 Performance Systems, Inc.
3549 295 427 Global Crossing
4151 291 337 USDA
7066 275 304 Virginia Polytechnic Institut
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:2 9:1 12:734 13:10 15:2 17:5
20:1 24:715 25:1 32:181 38:12 40:4
44:2 57:14 61:211 62:168 63:1881 64:1103
65:983 66:595 67:33 68:19 80:153 81:4
128:62 129:134 130:23 131:46 132:13 133:2
134:121 135:10 136:124 137:104 138:61 139:29
140:94 141:58 142:65 143:38 144:56 145:12
146:216 147:62 148:142 149:85 150:39 151:43
152:384 153:34 154:8 155:83 156:81 157:125
158:72 159:86 160:26 161:55 162:97 163:125
164:91 165:115 166:225 167:160 168:121 169:48
170:283 171:4 192:5401 193:2122 194:2035 195:796
196:436 198:3739 199:3255 200:2313 201:1 202:2892
203:4520 204:3300 205:2147 206:2611 207:2645 208:2588
209:2854 210:535 211:152 212:880 213:579 214:7
215:16 216:2972 217:439 218:12
End of report
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