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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 01 Dec, 2001
Analysis Summary
----------------
BGP routing table entries examined: 107621
Total ASes present in the Internet Routing Table: 12182
Origin-only ASes present in the Internet Routing Table: 10573
Origin ASes announcing only one prefix: 4555
Transit ASes present in the Internet Routing Table: 1609
Transit-only ASes present in the Internet Routing Table: 60
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: 13
Non-routable prefixes present in the Routing Table: 0
Prefixes being announced from the IANA Reserved Address blocks: 15
Number of addresses announced to Internet: 1262294090
Equivalent to 75 /8s, 61 /16s and 20 /24s
Percentage of available address space announced: 34.1
Percentage of allocated address space announced: 65.0
Percentage of available address space allocated: 52.4
Total number of prefixes smaller than registry allocations: 72564
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 16969
Prefixes being announced from the APNIC address blocks: 15462
APNIC Region origin ASes present in the Internet Routing Table: 1409
APNIC Region origin ASes announcing only one prefix: 461
APNIC Region transit ASes present in the Internet Routing Table: 245
Average APNIC Region AS path length visible: 5.1
Max APNIC Region AS path length visible: 14
Number of APNIC addresses announced to Internet: 89485902
Equivalent to 5 /8s, 85 /16s and 114 /24s
Percentage of available APNIC address space announced: 75.5
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: 72862
Prefixes being announced from the ARIN address blocks: 52226
ARIN Region origin ASes present in the Internet Routing Table: 7238
ARIN Region origin ASes announcing only one prefix: 2222
ARIN Region transit ASes present in the Internet Routing Table: 741
Average ARIN Region AS path length visible: 5.2
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 222618514
Equivalent to 13 /8s, 68 /16s and 227 /24s
Percentage of available ARIN address space announced: 82.9
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: 17783
Prefixes being announced from the RIPE address blocks: 14481
RIPE Region origin ASes present in the Internet Routing Table: 3477
RIPE Region origin ASes announcing only one prefix: 1872
RIPE Region transit ASes present in the Internet Routing Table: 611
Average RIPE Region AS path length visible: 5.9
Max RIPE Region AS path length visible: 15
Number of RIPE addresses announced to Internet: 111018644
Equivalent to 6 /8s, 158 /16s and 2 /24s
Percentage of available RIPE address space announced: 73.5
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
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 1531 1328 Telstra Pty Ltd
2764 400 357 connect.com.au pty ltd
703 383 336 UUNET Technologies, Inc.
2907 371 1863 SINET Japan
7474 305 287 Optus Communications Pty Ltd
4755 302 157 Videsh Sanchar Nigam Ltd. Aut
4134 256 1932 Data Communications Bureau
4766 186 1431 Korea Internet Exchange for "
4740 176 40 OzEmail ISP
9443 173 62 Primus Telecommunications
2521 167 172 PSINet Japan
1659 164 1124 Taiwan Academic Network (TANe
17557 163 13 Pakistan Telecom
9583 154 48 Satyam Infoway Ltd.,
7539 141 150 TANet2, sponsored by NSC, TAI
4812 137 305 China Telecom (Group) - Shang
9768 127 362 Korea Telecom
17676 125 1952 XTAGE CORPORATION
7657 124 23 The Internet Group Limited
4713 121 944 NTT Communications Corporatio
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv Description
702 1083 2765 UUNET Technologies, Inc.
3301 429 934 TeliaNet Sweden
1257 268 500 SWIPnet Swedish IP Network
3215 237 543 France Telecom / &Equant
680 231 2148 DFN-IP service G-WiN
5515 212 705 Sonera Finland Autonomous Sys
3320 191 1960 Deutsche Telekom AG
786 183 1874 The JANET IP Service
719 166 292 LANLINK autonomous system
8708 162 21 Romania Data Systems S.A.
5400 142 62 Concert European Core Network
2856 134 777 BTnet UK Regional network
3303 132 561 Swisscom Ltd
5549 121 82 Nextra Deutschland GmbH + Co.
517 111 248 KPNQwest Germany GmbH
12302 107 7 MobiFon S.A.
3269 105 799 TELECOM ITALIA
1290 100 398 PSINet UK Ltd.
8297 98 31 Teleglobe Autonomous System i
5511 93 192 France Telecom
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv Description
701 2169 9075 UUNET Technologies, Inc.
7018 1089 7346 AT&T
3967 1025 482 Exodus Communication
1 844 8533 BBN Planet
1239 739 3397 Sprint
7046 724 888 UUNET Technologies, Inc.
8010 719 106 PublicNet Communications, Inc
3908 697 1549 Supernet, Inc.
209 607 2217 Qwest
4323 585 477 Time Warner Communications, I
852 543 697 Telus Advanced Communications
690 502 71 Merit Network
2914 483 2269 Verio, Inc.
705 449 252 UUNET Technologies, Inc.
2149 434 250 Performance Systems, Inc.
3549 409 889 Global Crossing
3561 388 2288 Cable & Wireless USA
7132 386 534 Southwestern Bell Internet Se
4151 358 1286 USDA
3741 350 766 The Internet Solution
Global Per AS prefix count summary
----------------------------------
ASN No of nets /20 equiv Description
701 2169 9075 UUNET Technologies, Inc.
1221 1531 1328 Telstra Pty Ltd
7018 1089 7346 AT&T
702 1083 2765 UUNET Technologies, Inc.
3967 1025 482 Exodus Communication
1 844 8533 BBN Planet
1239 739 3397 Sprint
7046 724 888 UUNET Technologies, Inc.
8010 719 106 PublicNet Communications, Inc
3908 697 1549 Supernet, Inc.
209 607 2217 Qwest
4323 585 477 Time Warner Communications, I
852 543 697 Telus Advanced Communications
690 502 71 Merit Network
2914 483 2269 Verio, Inc.
705 449 252 UUNET Technologies, Inc.
2149 434 250 Performance Systems, Inc.
3301 429 934 TeliaNet Sweden
3549 409 889 Global Crossing
2764 400 357 connect.com.au pty ltd
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
22830 UNALLOCATED 66.100.87.0/24 6347 SAVVIS Communication
2027 UNALLOCATED 150.185.128.0/18 8143 Publicom Corp.
65025 PRIVATE 168.95.70.0/24 3462 Data Communication B
65025 PRIVATE 168.95.71.0/24 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
22830 UNALLOCATED 206.153.0.0/24 6347 SAVVIS Communication
22830 UNALLOCATED 206.153.21.0/24 6347 SAVVIS Communication
5757 UNALLOCATED 207.19.224.0/24 701 UUNET Technologies,
65515 PRIVATE 212.110.142.0/24 5593 CRIS-AS
17940 UNALLOCATED 218.45.0.0/20 4713 NTT Communications C
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
191.9.200.0/24 1290 PSINet UK Ltd.
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 /12:37
/13:89 /14:221 /15:386 /16:7089 /17:1364 /18:2453
/19:7111 /20:6146 /21:4689 /22:7083 /23:8853 /24:60491
/25:327 /26:319 /27:266 /28:237 /29:151 /30:189
/31:0 /32:78
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
701 1389 2169 UUNET Technologies, Inc.
1221 1385 1531 Telstra Pty Ltd
3967 842 1025 Exodus Communication
8010 703 719 PublicNet Communications, Inc
702 695 1083 UUNET Technologies, Inc.
7018 562 1089 AT&T
7046 558 724 UUNET Technologies, Inc.
690 499 502 Merit Network
4323 495 585 Time Warner Communications, I
3908 473 697 Supernet, Inc.
209 436 607 Qwest
1 415 844 BBN Planet
1239 408 739 Sprint
852 363 543 Telus Advanced Communications
2764 358 400 connect.com.au pty ltd
705 356 449 UUNET Technologies, Inc.
2149 326 434 Performance Systems, Inc.
4151 312 358 USDA
703 311 383 UUNET Technologies, Inc.
3549 276 409 Global Crossing
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:4 9:1 12:422 13:10 15:1 17:5
20:1 24:859 25:1 26:1 32:72 38:13
40:1 43:1 44:2 52:1 53:2 57:12
61:129 62:152 63:1918 64:1494 65:966 66:736
67:9 80:108 128:61 129:111 130:23 131:44
132:14 133:2 134:136 135:10 136:115 137:102
138:63 139:30 140:98 141:59 142:68 143:43
144:54 145:13 146:211 147:90 148:129 149:88
150:42 151:38 152:390 153:37 154:6 155:85
156:83 157:114 158:69 159:71 160:45 161:55
162:82 163:128 164:121 165:97 166:205 167:162
168:120 169:46 170:303 171:2 191:1 192:5376
193:2068 194:2092 195:818 196:425 198:3753 199:3348
200:2368 201:1 202:2839 203:4556 204:3313 205:2145
206:2606 207:2655 208:2728 209:2989 210:593 211:144
212:919 213:539 214:9 215:15 216:2974 217:424
218:7
End of report
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