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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 17 Nov, 2001
Analysis Summary
----------------
BGP routing table entries examined: 108626
Total ASes present in the Internet Routing Table: 12114
Origin-only ASes present in the Internet Routing Table: 10526
Origin ASes announcing only one prefix: 4495
Transit ASes present in the Internet Routing Table: 1588
Transit-only ASes present in the Internet Routing Table: 54
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: 1258871142
Equivalent to 75 /8s, 8 /16s and 217 /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: 73756
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 16956
Prefixes being announced from the APNIC address blocks: 15430
APNIC Region origin ASes present in the Internet Routing Table: 1404
APNIC Region origin ASes announcing only one prefix: 458
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: 14
Number of APNIC addresses announced to Internet: 88876034
Equivalent to 5 /8s, 76 /16s and 36 /24s
Percentage of available APNIC address space announced: 75.0
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: 73873
Prefixes being announced from the ARIN address blocks: 52722
ARIN Region origin ASes present in the Internet Routing Table: 7203
ARIN Region origin ASes announcing only one prefix: 2197
ARIN Region transit ASes present in the Internet Routing Table: 735
Average ARIN Region AS path length visible: 5.2
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 221154242
Equivalent to 13 /8s, 46 /16s and 139 /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: 17796
Prefixes being announced from the RIPE address blocks: 14430
RIPE Region origin ASes present in the Internet Routing Table: 3453
RIPE Region origin ASes announcing only one prefix: 1840
RIPE Region transit ASes present in the Internet Routing Table: 606
Average RIPE Region AS path length visible: 5.9
Max RIPE Region AS path length visible: 15
Number of RIPE addresses announced to Internet: 110114924
Equivalent to 6 /8s, 144 /16s and 56 /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 1539 1303 Telstra Pty Ltd
2764 413 380 connect.com.au pty ltd
703 397 360 UUNET Technologies, Inc.
2907 372 1848 SINET Japan
4755 359 171 Videsh Sanchar Nigam Ltd. Aut
7474 297 275 Optus Communications Pty Ltd
4134 255 1924 Data Communications Bureau
4766 185 1431 Korea Internet Exchange for "
4740 169 24 OzEmail ISP
17676 168 1957 XTAGE CORPORATION
9443 167 53 Primus Telecommunications
1659 165 1157 Taiwan Academic Network (TANe
17557 152 12 Pakistan Telecom
7539 144 129 TANet2, sponsored by NSC, TAI
9583 139 47 Satyam Infoway Ltd.,
4812 137 305 China Telecom (Group) - Shang
2521 136 171 PSINet Japan
4786 131 15 NetConnect Communications Pty
9768 127 362 Korea Telecom
7657 121 23 The Internet Group Limited
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv Description
702 1066 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
719 134 289 LANLINK autonomous system
2856 134 777 BTnet UK Regional network
3303 131 560 Swisscom Ltd
5549 121 82 Nextra Deutschland GmbH + Co.
517 112 248 KPNQwest Germany GmbH
12302 108 7 MobiFon S.A.
1273 107 165 Cable & Wireless ECRC GmbH
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 2240 9177 UUNET Technologies, Inc.
7018 1084 7300 AT&T
3967 1056 483 Exodus Communication
1 843 8504 BBN Planet
7046 826 973 UUNET Technologies, Inc.
1239 724 3385 Sprint
8010 719 106 PublicNet Communications, Inc
3908 687 1532 Supernet, Inc.
209 581 2200 Qwest
4323 543 453 Time Warner Communications, I
852 520 695 Telus Advanced Communications
690 495 86 Merit Network
2149 484 334 Performance Systems, Inc.
2914 483 2270 Verio, Inc.
4293 444 112 Cable & Wireless USA
705 426 249 UUNET Technologies, Inc.
3549 391 887 Global Crossing
3561 379 2303 Cable & Wireless USA
4151 364 1254 USDA
3741 348 765 The Internet Solution
Global Per AS prefix count summary
----------------------------------
ASN No of nets /20 equiv Description
701 2240 9177 UUNET Technologies, Inc.
1221 1539 1303 Telstra Pty Ltd
7018 1084 7300 AT&T
702 1066 2145 UUNET Technologies, Inc.
3967 1056 483 Exodus Communication
1 843 8504 BBN Planet
7046 826 973 UUNET Technologies, Inc.
1239 724 3385 Sprint
8010 719 106 PublicNet Communications, Inc
3908 687 1532 Supernet, Inc.
209 581 2200 Qwest
4323 543 453 Time Warner Communications, I
852 520 695 Telus Advanced Communications
690 495 86 Merit Network
2149 484 334 Performance Systems, Inc.
2914 483 2270 Verio, Inc.
4293 444 112 Cable & Wireless USA
3301 429 948 TeliaNet Sweden
705 426 249 UUNET Technologies, Inc.
2764 413 380 connect.com.au pty ltd
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
2027 UNALLOCATED 150.185.128.0/18 8143 Publicom Corp.
1877 UNALLOCATED 192.108.201.0/24 1880 Stupi, house man's p
65000 PRIVATE 203.21.200.0/24 1221 Telstra Pty Ltd
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 /14:220 /15:386 /16:7071 /17:1357 /18:2434
/19:7062 /20:6038 /21:4739 /22:7128 /23:8928 /24:61521
/25:332 /26:324 /27:270 /28:250 /29:158 /30:183
/31:0 /32:58
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
701 1431 2240 UUNET Technologies, Inc.
1221 1397 1539 Telstra Pty Ltd
3967 873 1056 Exodus Communication
702 732 1066 UUNET Technologies, Inc.
8010 703 719 PublicNet Communications, Inc
7046 657 826 UUNET Technologies, Inc.
7018 560 1084 AT&T
690 491 495 Merit Network
4323 469 543 Time Warner Communications, I
3908 465 687 Supernet, Inc.
4293 429 444 Cable & Wireless USA
209 409 581 Qwest
1 408 843 BBN Planet
1239 405 724 Sprint
2764 366 413 connect.com.au pty ltd
2149 362 484 Performance Systems, Inc.
852 340 520 Telus Advanced Communications
705 335 426 UUNET Technologies, Inc.
703 326 397 UUNET Technologies, Inc.
4151 319 364 USDA
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:5 9:1 12:425 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 61:123 62:154 63:1911 64:1501 65:920
66:718 67:6 80:102 128:61 129:113 130:23
131:42 132:13 133:2 134:134 135:10 136:47
137:99 138:197 139:47 140:173 141:58 142:67
143:43 144:148 145:11 146:209 147:133 148:182
149:86 150:42 151:191 152:380 153:71 154:8
155:84 156:92 157:107 158:69 159:70 160:46
161:55 162:80 163:129 164:128 165:122 166:207
167:161 168:119 169:46 170:298 171:2 192:5372
193:2037 194:2054 195:843 196:456 198:3759 199:3443
200:2375 201:1 202:2830 203:4588 204:3359 205:2140
206:2765 207:2651 208:2970 209:2969 210:547 211:155
212:965 213:525 214:9 215:15 216:3002 217:434
218:6
End of report
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