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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 08 Dec, 2001
Analysis Summary
----------------
BGP routing table entries examined: 107486
Total ASes present in the Internet Routing Table: 12240
Origin-only ASes present in the Internet Routing Table: 10626
Origin ASes announcing only one prefix: 4582
Transit ASes present in the Internet Routing Table: 1614
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: 20
Illegal AS announcements present in the Routing Table: 10
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: 1262030443
Equivalent to 75 /8s, 57 /16s and 14 /24s
Percentage of available address space announced: 34.0
Percentage of allocated address space announced: 64.4
Percentage of available address space allocated: 52.8
Total number of prefixes smaller than registry allocations: 72379
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 16882
Prefixes being announced from the APNIC address blocks: 15398
APNIC Region origin ASes present in the Internet Routing Table: 1412
APNIC Region origin ASes announcing only one prefix: 457
APNIC Region transit ASes present in the Internet Routing Table: 244
Average APNIC Region AS path length visible: 5.2
Max APNIC Region AS path length visible: 14
Number of APNIC addresses announced to Internet: 89598016
Equivalent to 5 /8s, 87 /16s and 40 /24s
Percentage of available APNIC address space announced: 66.2
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: 72838
Prefixes being announced from the ARIN address blocks: 52222
ARIN Region origin ASes present in the Internet Routing Table: 7260
ARIN Region origin ASes announcing only one prefix: 2227
ARIN Region transit ASes present in the Internet Routing Table: 731
Average ARIN Region AS path length visible: 5.2
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 223093334
Equivalent to 13 /8s, 76 /16s and 34 /24s
Percentage of available ARIN address space announced: 83.1
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: 17759
Prefixes being announced from the RIPE address blocks: 14454
RIPE Region origin ASes present in the Internet Routing Table: 3510
RIPE Region origin ASes announcing only one prefix: 1898
RIPE Region transit ASes present in the Internet Routing Table: 624
Average RIPE Region AS path length visible: 5.9
Max RIPE Region AS path length visible: 20
Number of RIPE addresses announced to Internet: 111285924
Equivalent to 6 /8s, 162 /16s and 22 /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 1523 1328 Telstra Pty Ltd
2764 391 356 connect.com.au pty ltd
703 384 337 UUNET Technologies, Inc.
2907 370 1863 SINET Japan
7474 306 287 Optus Communications Pty Ltd
4755 305 159 Videsh Sanchar Nigam Ltd. Aut
4134 257 1940 Data Communications Bureau
4766 186 1423 Korea Internet Exchange for "
1659 175 1161 Taiwan Academic Network (TANe
4740 174 40 OzEmail ISP
9443 169 61 Primus Telecommunications
17557 162 13 Pakistan Telecom
2521 161 171 PSINet Japan
9583 152 48 Satyam Infoway Ltd.,
7539 138 134 TANet2, sponsored by NSC, TAI
4812 137 305 China Telecom (Group) - Shang
9768 127 362 Korea Telecom
17676 125 1952 XTAGE CORPORATION
4713 120 936 NTT Communications Corporatio
4786 118 14 NetConnect Communications Pty
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv Description
702 1086 2737 UUNET Technologies, Inc.
3301 430 934 TeliaNet Sweden
1257 268 500 SWIPnet Swedish IP Network
3215 237 545 France Telecom / &Equant
680 232 2149 DFN-IP service G-WiN
5515 212 705 Sonera Finland Autonomous Sys
3320 185 1960 Deutsche Telekom AG
786 182 1874 The JANET IP Service
719 164 292 LANLINK autonomous system
8708 150 21 Romania Data Systems S.A.
5400 146 65 Concert European Core Network
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
5511 96 192 France Telecom
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv Description
701 2162 9058 UUNET Technologies, Inc.
7018 1097 7371 AT&T
3967 1002 466 Exodus Communication
1 853 8519 BBN Planet
1239 750 3380 Sprint
7046 729 876 UUNET Technologies, Inc.
8010 719 106 PublicNet Communications, Inc
3908 703 1582 Supernet, Inc.
209 611 2248 Qwest
4323 586 477 Time Warner Communications, I
852 553 726 Telus Advanced Communications
690 509 72 Merit Network
2914 479 2253 Verio, Inc.
705 458 277 UUNET Technologies, Inc.
2149 425 232 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 2162 9058 UUNET Technologies, Inc.
1221 1523 1328 Telstra Pty Ltd
7018 1097 7371 AT&T
702 1086 2737 UUNET Technologies, Inc.
3967 1002 466 Exodus Communication
1 853 8519 BBN Planet
1239 750 3380 Sprint
7046 729 876 UUNET Technologies, Inc.
8010 719 106 PublicNet Communications, Inc
3908 703 1582 Supernet, Inc.
209 611 2248 Qwest
4323 586 477 Time Warner Communications, I
852 553 726 Telus Advanced Communications
690 509 72 Merit Network
2914 479 2253 Verio, Inc.
705 458 277 UUNET Technologies, Inc.
3301 430 934 TeliaNet Sweden
2149 425 232 Performance Systems, Inc.
3549 408 888 Global Crossing
2764 391 356 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.
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
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 /15:389 /16:7074 /17:1363 /18:2453
/19:7133 /20:6206 /21:4671 /22:7080 /23:8829 /24:60443
/25:320 /26:316 /27:243 /28:211 /29:126 /30:169
/31:0 /32:71
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
701 1381 2162 UUNET Technologies, Inc.
1221 1377 1523 Telstra Pty Ltd
3967 820 1002 Exodus Communication
702 704 1086 UUNET Technologies, Inc.
8010 703 719 PublicNet Communications, Inc
7018 565 1097 AT&T
7046 565 729 UUNET Technologies, Inc.
690 506 509 Merit Network
4323 496 586 Time Warner Communications, I
3908 480 703 Supernet, Inc.
209 438 611 Qwest
1 423 853 BBN Planet
1239 420 750 Sprint
852 367 553 Telus Advanced Communications
705 354 458 UUNET Technologies, Inc.
2764 349 391 connect.com.au pty ltd
2149 324 425 Performance Systems, Inc.
703 311 384 UUNET Technologies, Inc.
4151 296 342 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 24:861 25:1 26:1 32:73 38:13
40:1 43:1 44:1 52:1 53:2 57:12
61:149 62:156 63:1917 64:1499 65:988 66:747
67:8 80:111 128:61 129:114 130:23 131:44
132:15 133:2 134:136 135:10 136:122 137:110
138:63 139:30 140:99 141:59 142:68 143:44
144:56 145:13 146:216 147:91 148:130 149:86
150:42 151:38 152:392 153:37 154:6 155:85
156:84 157:112 158:69 159:75 160:45 161:53
162:83 163:131 164:117 165:97 166:205 167:162
168:122 169:47 170:299 171:2 191:1 192:5338
193:2073 194:2070 195:813 196:433 198:3762 199:3334
200:2388 201:1 202:2843 203:4555 204:3310 205:2156
206:2601 207:2666 208:2709 209:2929 210:579 211:145
212:898 213:530 214:9 215:15 216:2962 217:424
218:8
End of report
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