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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 07 Dec, 2001
Analysis Summary
----------------
BGP routing table entries examined: 107712
Total ASes present in the Internet Routing Table: 12232
Origin-only ASes present in the Internet Routing Table: 10617
Origin ASes announcing only one prefix: 4581
Transit ASes present in the Internet Routing Table: 1615
Transit-only ASes present in the Internet Routing Table: 56
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: 11
Non-routable prefixes present in the Routing Table: 0
Prefixes being announced from the IANA Reserved Address blocks: 20
Number of addresses announced to Internet: 1279312136
Equivalent to 76 /8s, 64 /16s and 193 /24s
Percentage of available address space announced: 34.5
Percentage of allocated address space announced: 65.9
Percentage of available address space allocated: 52.4
Total number of prefixes smaller than registry allocations: 72589
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 16934
Prefixes being announced from the APNIC address blocks: 15450
APNIC Region origin ASes present in the Internet Routing Table: 1414
APNIC Region origin ASes announcing only one prefix: 456
APNIC Region transit ASes present in the Internet Routing Table: 245
Average APNIC Region AS path length visible: 5.2
Max APNIC Region AS path length visible: 14
Number of APNIC addresses announced to Internet: 89530928
Equivalent to 5 /8s, 86 /16s and 34 /24s
Percentage of available APNIC address space announced: 75.6
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: 72921
Prefixes being announced from the ARIN address blocks: 52225
ARIN Region origin ASes present in the Internet Routing Table: 7260
ARIN Region origin ASes announcing only one prefix: 2231
ARIN Region transit ASes present in the Internet Routing Table: 736
Average ARIN Region AS path length visible: 5.2
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 239383066
Equivalent to 14 /8s, 68 /16s and 178 /24s
Percentage of available ARIN address space announced: 89.2
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: 17849
Prefixes being announced from the RIPE address blocks: 14551
RIPE Region origin ASes present in the Internet Routing Table: 3505
RIPE Region origin ASes announcing only one prefix: 1894
RIPE Region transit ASes present in the Internet Routing Table: 621
Average RIPE Region AS path length visible: 5.9
Max RIPE Region AS path length visible: 15
Number of RIPE addresses announced to Internet: 111338932
Equivalent to 6 /8s, 162 /16s and 229 /24s
Percentage of available RIPE address space announced: 73.7
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 1528 1328 Telstra Pty Ltd
2764 392 356 connect.com.au pty ltd
703 384 337 UUNET Technologies, Inc.
2907 372 1863 SINET Japan
7474 306 287 Optus Communications Pty Ltd
4755 303 158 Videsh Sanchar Nigam Ltd. Aut
4134 257 1940 Data Communications Bureau
4766 186 1423 Korea Internet Exchange for "
4740 174 40 OzEmail ISP
1659 171 1127 Taiwan Academic Network (TANe
9443 169 61 Primus Telecommunications
17557 162 13 Pakistan Telecom
2521 161 171 PSINet Japan
9583 152 48 Satyam Infoway Ltd.,
4812 137 305 China Telecom (Group) - Shang
7539 137 134 TANet2, sponsored by NSC, TAI
4786 127 15 NetConnect Communications Pty
9768 127 362 Korea Telecom
17676 125 1952 XTAGE CORPORATION
4713 120 936 NTT Communications Corporatio
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv Description
702 1091 2747 UUNET Technologies, Inc.
3301 430 934 TeliaNet Sweden
1257 268 500 SWIPnet Swedish IP Network
3215 236 543 France Telecom / &Equant
680 230 2148 DFN-IP service G-WiN
5515 212 705 Sonera Finland Autonomous Sys
3320 189 1960 Deutsche Telekom AG
786 182 1874 The JANET IP Service
719 164 292 LANLINK autonomous system
8708 149 20 Romania Data Systems S.A.
5400 146 65 Concert European Core Network
3246 141 191 Song Networks / Clinet
2856 134 777 BTnet UK Regional network
3303 134 577 Swisscom Ltd
5549 121 82 Nextra Deutschland GmbH + Co.
517 111 248 KPNQwest Germany GmbH
12302 110 7 MobiFon S.A.
3269 106 793 TELECOM ITALIA
1290 98 398 PSINet UK Ltd.
8297 97 30 Teleglobe Autonomous System i
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv Description
701 2161 9058 UUNET Technologies, Inc.
7018 1095 7363 AT&T
3967 1004 466 Exodus Communication
1 854 8519 BBN Planet
1239 749 3380 Sprint
7046 736 891 UUNET Technologies, Inc.
8010 719 106 PublicNet Communications, Inc
3908 703 1581 Supernet, Inc.
209 614 2248 Qwest
4323 586 477 Time Warner Communications, I
852 552 724 Telus Advanced Communications
690 509 72 Merit Network
2914 478 2253 Verio, Inc.
705 458 277 UUNET Technologies, Inc.
2149 429 232 Performance Systems, Inc.
3549 408 888 Global Crossing
3561 386 2278 Cable & Wireless USA
7132 386 534 Southwestern Bell Internet Se
3741 350 766 The Internet Solution
577 348 625 Bell Advanced Communications
Global Per AS prefix count summary
----------------------------------
ASN No of nets /20 equiv Description
701 2161 9058 UUNET Technologies, Inc.
1221 1528 1328 Telstra Pty Ltd
7018 1095 7363 AT&T
702 1091 2747 UUNET Technologies, Inc.
3967 1004 466 Exodus Communication
1 854 8519 BBN Planet
1239 749 3380 Sprint
7046 736 891 UUNET Technologies, Inc.
8010 719 106 PublicNet Communications, Inc
3908 703 1581 Supernet, Inc.
209 614 2248 Qwest
4323 586 477 Time Warner Communications, I
852 552 724 Telus Advanced Communications
690 509 72 Merit Network
2914 478 2253 Verio, Inc.
705 458 277 UUNET Technologies, Inc.
3301 430 934 TeliaNet Sweden
2149 429 232 Performance Systems, Inc.
3549 408 888 Global Crossing
2764 392 356 connect.com.au pty ltd
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
64610 PRIVATE 64.198.32.0/24 10514 Splitrock Services I
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
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
68.1.0.0/17 22773 Cox Communications, Inc. Atla
68.1.128.0/18 22773 Cox Communications, Inc. Atla
68.6.0.0/15 22773 Cox Communications, Inc. Atla
68.8.0.0/17 22773 Cox Communications, Inc. Atla
68.12.0.0/16 22773 Cox Communications, Inc. Atla
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 /8:19 /9:5 /10:7 /11:12 /12:37
/13:89 /14:221 /15:388 /16:7083 /17:1365 /18:2454
/19:7118 /20:6202 /21:4692 /22:7083 /23:8835 /24:60653
/25:323 /26:314 /27:242 /28:207 /29:126 /30:169
/31:0 /32:68
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
1221 1382 1528 Telstra Pty Ltd
701 1381 2161 UUNET Technologies, Inc.
3967 822 1004 Exodus Communication
702 707 1091 UUNET Technologies, Inc.
8010 703 719 PublicNet Communications, Inc
7046 574 736 UUNET Technologies, Inc.
7018 564 1095 AT&T
690 506 509 Merit Network
4323 496 586 Time Warner Communications, I
3908 480 703 Supernet, Inc.
209 441 614 Qwest
1 424 854 BBN Planet
1239 419 749 Sprint
852 367 552 Telus Advanced Communications
705 354 458 UUNET Technologies, Inc.
2764 350 392 connect.com.au pty ltd
2149 326 429 Performance Systems, Inc.
703 311 384 UUNET Technologies, Inc.
4151 299 345 USDA
3549 278 408 Global Crossing
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:4 9:1 12:432 13:10 15:1 17:5
20:1 24:856 25:1 26:1 32:73 38:13
40:1 43:1 44:1 52:1 53:2 57:12
61:152 62:154 63:1924 64:1497 65:995 66:738
67:8 80:111 128:61 129:113 130:23 131:44
132:15 133:2 134:137 135:10 136:118 137:110
138:63 139:30 140:98 141:59 142:69 143:43
144:56 145:13 146:216 147:91 148:129 149:87
150:42 151:38 152:392 153:37 154:6 155:85
156:84 157:115 158:69 159:75 160:45 161:53
162:83 163:127 164:121 165:93 166:206 167:163
168:122 169:46 170:301 171:2 191:1 192:5371
193:2073 194:2082 195:839 196:433 198:3760 199:3340
200:2391 201:1 202:2868 203:4591 204:3314 205:2157
206:2608 207:2673 208:2706 209:2941 210:576 211:146
212:948 213:531 214:9 215:15 216:2961 217:423
218:8
End of report
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