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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 20:00 19 Nov, 2001
Analysis Summary
----------------
BGP routing table entries examined: 108215
Total ASes present in the Internet Routing Table: 12117
Origin-only ASes present in the Internet Routing Table: 10538
Origin ASes announcing only one prefix: 4521
Transit ASes present in the Internet Routing Table: 1579
Transit-only ASes present in the Internet Routing Table: 55
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: 8
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: 1258778193
Equivalent to 75 /8s, 7 /16s and 110 /24s
Percentage of available address space announced: 34.0
Percentage of allocated address space announced: 64.8
Percentage of available address space allocated: 52.4
Total number of prefixes smaller than registry allocations: 73361
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 16940
Prefixes being announced from the APNIC address blocks: 15420
APNIC Region origin ASes present in the Internet Routing Table: 1403
APNIC Region origin ASes announcing only one prefix: 461
APNIC Region transit ASes present in the Internet Routing Table: 236
Average APNIC Region AS path length visible: 5.2
Max APNIC Region AS path length visible: 16
Number of APNIC addresses announced to Internet: 88806778
Equivalent to 5 /8s, 75 /16s and 21 /24s
Percentage of available APNIC address space announced: 74.9
APNIC AS Blocks 4608 - 4864, 7467 - 7722, 9216 - 10239
17408 - 18431, 23552 - 24575
APNIC Address Blocks 61/8, 202/7, 210/7 and 218/7
ARIN Region Analysis Summary
----------------------------
Prefixes being announced by ARIN Region ASes: 73461
Prefixes being announced from the ARIN address blocks: 52236
ARIN Region origin ASes present in the Internet Routing Table: 7204
ARIN Region origin ASes announcing only one prefix: 2210
ARIN Region transit ASes present in the Internet Routing Table: 723
Average ARIN Region AS path length visible: 5.2
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 221077502
Equivalent to 13 /8s, 45 /16s and 95 /24s
Percentage of available ARIN address space announced: 82.4
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: 17809
Prefixes being announced from the RIPE address blocks: 14448
RIPE Region origin ASes present in the Internet Routing Table: 3456
RIPE Region origin ASes announcing only one prefix: 1850
RIPE Region transit ASes present in the Internet Routing Table: 610
Average RIPE Region AS path length visible: 5.9
Max RIPE Region AS path length visible: 15
Number of RIPE addresses announced to Internet: 110069260
Equivalent to 6 /8s, 143 /16s and 134 /24s
Percentage of available RIPE address space announced: 72.9
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
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 Description
1221 1542 1305 Telstra Pty Ltd
2764 411 379 connect.com.au pty ltd
703 383 343 UUNET Technologies, Inc.
2907 371 1848 SINET Japan
4755 356 168 Videsh Sanchar Nigam Ltd. Aut
7474 299 275 Optus Communications Pty Ltd
4134 255 1924 Data Communications Bureau
4766 184 1431 Korea Internet Exchange for "
4740 179 41 OzEmail ISP
9443 169 53 Primus Telecommunications
17676 169 1958 XTAGE CORPORATION
1659 165 1157 Taiwan Academic Network (TANe
17557 153 12 Pakistan Telecom
7539 143 121 TANet2, sponsored by NSC, TAI
2521 139 171 PSINet Japan
4812 137 305 China Telecom (Group) - Shang
9583 137 47 Satyam Infoway Ltd.,
4786 131 15 NetConnect Communications Pty
9768 127 362 Korea Telecom
7657 120 23 The Internet Group Limited
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv Description
702 1067 2145 UUNET Technologies, Inc.
3301 429 948 TeliaNet Sweden
1257 268 500 SWIPnet Swedish IP Network
3215 234 568 France Telecom / &Equant
680 231 2148 DFN-IP service G-WiN
5515 197 688 Sonera Finland Autonomous Sys
3320 196 1959 Deutsche Telekom AG
786 184 1890 The JANET IP Service
8708 169 17 Romania Data Systems S.A.
5400 137 62 Concert European Core Network
2856 135 778 BTnet UK Regional network
719 134 289 LANLINK autonomous system
3303 131 560 Swisscom Ltd
5549 121 82 Nextra Deutschland GmbH + Co.
517 112 248 KPNQwest Germany GmbH
1273 108 166 Cable & Wireless ECRC GmbH
12302 107 7 MobiFon S.A.
3269 105 808 TELECOM ITALIA
1290 100 398 PSINet UK Ltd.
8297 99 31 Teleglobe Autonomous System i
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv Description
701 2239 9179 UUNET Technologies, Inc.
7018 1083 7284 AT&T
3967 1051 483 Exodus Communication
1 845 8522 BBN Planet
7046 823 972 UUNET Technologies, Inc.
8010 719 106 PublicNet Communications, Inc
1239 715 3387 Sprint
3908 688 1532 Supernet, Inc.
209 586 2215 Qwest
4323 573 467 Time Warner Communications, I
852 540 697 Telus Advanced Communications
690 495 87 Merit Network
2914 482 2269 Verio, Inc.
2149 478 317 Performance Systems, Inc.
705 427 249 UUNET Technologies, Inc.
3549 390 887 Global Crossing
3561 385 2288 Cable & Wireless USA
7132 383 522 Southwestern Bell Internet Se
4151 360 1254 USDA
3741 349 765 The Internet Solution
Global Per AS prefix count summary
----------------------------------
ASN No of nets /20 equiv Description
701 2239 9179 UUNET Technologies, Inc.
1221 1542 1305 Telstra Pty Ltd
7018 1083 7284 AT&T
702 1067 2145 UUNET Technologies, Inc.
3967 1051 483 Exodus Communication
1 845 8522 BBN Planet
7046 823 972 UUNET Technologies, Inc.
8010 719 106 PublicNet Communications, Inc
1239 715 3387 Sprint
3908 688 1532 Supernet, Inc.
209 586 2215 Qwest
4323 573 467 Time Warner Communications, I
852 540 697 Telus Advanced Communications
690 495 87 Merit Network
2914 482 2269 Verio, Inc.
2149 478 317 Performance Systems, Inc.
3301 429 948 TeliaNet Sweden
705 427 249 UUNET Technologies, Inc.
2764 411 379 connect.com.au pty ltd
3549 390 887 Global Crossing
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
2027 UNALLOCATED 150.185.128.0/18 8143 Publicom Corp.
65025 PRIVATE 168.95.70.0/24 3462 Data Communication B
65025 PRIVATE 168.95.86.32/27 3462 Data Communication B
65026 PRIVATE 168.95.86.128/27 3462 Data Communication B
65026 PRIVATE 168.95.160.0/24 3462 Data Communication B
65026 PRIVATE 168.95.161.0/24 3462 Data Communication B
1877 UNALLOCATED 192.108.201.0/24 1880 Stupi, house man's p
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
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.
153.34.0.0/15 701 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 /10:7 /11:12 /12:36
/13:89 /14:221 /15:386 /16:7070 /17:1352 /18:2435
/19:7064 /20:6038 /21:4721 /22:7104 /23:8924 /24:61148
/25:337 /26:321 /27:272 /28:248 /29:158 /30:184
/31:0 /32:65
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
701 1430 2239 UUNET Technologies, Inc.
1221 1399 1542 Telstra Pty Ltd
3967 869 1051 Exodus Communication
702 733 1067 UUNET Technologies, Inc.
8010 703 719 PublicNet Communications, Inc
7046 654 823 UUNET Technologies, Inc.
7018 559 1083 AT&T
4323 492 573 Time Warner Communications, I
690 491 495 Merit Network
3908 466 688 Supernet, Inc.
209 414 586 Qwest
1 408 845 BBN Planet
1239 395 715 Sprint
2764 364 411 connect.com.au pty ltd
852 360 540 Telus Advanced Communications
2149 358 478 Performance Systems, Inc.
705 336 427 UUNET Technologies, Inc.
4151 315 360 USDA
703 313 383 UUNET Technologies, Inc.
4755 310 356 Videsh Sanchar Nigam Ltd. Aut
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:5 9:1 12:424 13:10 15:1 17:5
20:1 24:846 25:1 26:1 32:73 38:13
40:1 43:2 44:2 47:2 52:1 53:9
57:12 61:119 62:154 63:1899 64:1496 65:931
66:727 67:6 80:94 128:61 129:113 130:23
131:42 132:13 133:2 134:134 135:10 136:118
137:99 138:197 139:47 140:173 141:58 142:67
143:43 144:149 145:11 146:209 147:133 148:185
149:88 150:42 151:191 152:382 153:69 154:8
155:84 156:91 157:106 158:69 159:71 160:46
161:51 162:79 163:128 164:126 165:122 166:207
167:161 168:119 169:45 170:297 171:2 192:5361
193:2040 194:2061 195:842 196:455 198:3757 199:3422
200:2375 201:1 202:2848 203:4570 204:3344 205:2133
206:2675 207:2627 208:2756 209:2987 210:548 211:147
212:967 213:518 214:9 215:15 216:2938 217:439
218:6
End of report
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