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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 16:00 17 Nov, 2001
Analysis Summary
----------------
BGP routing table entries examined: 108553
Total ASes present in the Internet Routing Table: 12108
Origin-only ASes present in the Internet Routing Table: 10522
Origin ASes announcing only one prefix: 4500
Transit ASes present in the Internet Routing Table: 1586
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: 1275393192
Equivalent to 76 /8s, 4 /16s and 244 /24s
Percentage of available address space announced: 34.4
Percentage of allocated address space announced: 65.7
Percentage of available address space allocated: 52.4
Total number of prefixes smaller than registry allocations: 73699
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 16973
Prefixes being announced from the APNIC address blocks: 15448
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: 238
Average APNIC Region AS path length visible: 5.2
Max APNIC Region AS path length visible: 14
Number of APNIC addresses announced to Internet: 88942210
Equivalent to 5 /8s, 77 /16s and 38 /24s
Percentage of available APNIC address space announced: 75.1
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: 73781
Prefixes being announced from the ARIN address blocks: 52564
ARIN Region origin ASes present in the Internet Routing Table: 7196
ARIN Region origin ASes announcing only one prefix: 2200
ARIN Region transit ASes present in the Internet Routing Table: 729
Average ARIN Region AS path length visible: 5.2
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 237865646
Equivalent to 14 /8s, 45 /16s and 138 /24s
Percentage of available ARIN address space announced: 88.6
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: 17798
Prefixes being announced from the RIPE address blocks: 14439
RIPE Region origin ASes present in the Internet Routing Table: 3454
RIPE Region origin ASes announcing only one prefix: 1842
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: 110123628
Equivalent to 6 /8s, 144 /16s and 90 /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 1536 1303 Telstra Pty Ltd
2764 413 380 connect.com.au pty ltd
703 397 360 UUNET Technologies, Inc.
2907 371 1832 SINET Japan
4755 359 171 Videsh Sanchar Nigam Ltd. Aut
7474 297 275 Optus Communications Pty Ltd
4134 255 1924 Data Communications Bureau
4766 184 1431 Korea Internet Exchange for "
4740 169 24 OzEmail ISP
17676 169 1958 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 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 168 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 122 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 2243 9180 UUNET Technologies, Inc.
7018 1067 7283 AT&T
3967 1053 483 Exodus Communication
1 844 8506 BBN Planet
7046 826 973 UUNET Technologies, Inc.
8010 719 106 PublicNet Communications, Inc
1239 718 3387 Sprint
3908 688 1532 Supernet, Inc.
209 588 2215 Qwest
4323 544 454 Time Warner Communications, I
852 521 695 Telus Advanced Communications
690 495 87 Merit Network
2914 481 2269 Verio, Inc.
2149 478 317 Performance Systems, Inc.
4293 440 96 Cable & Wireless USA
705 424 249 UUNET Technologies, Inc.
3549 390 887 Global Crossing
3561 378 2303 Cable & Wireless USA
4151 361 1254 USDA
3741 350 766 The Internet Solution
Global Per AS prefix count summary
----------------------------------
ASN No of nets /20 equiv Description
701 2243 9180 UUNET Technologies, Inc.
1221 1536 1303 Telstra Pty Ltd
702 1067 2145 UUNET Technologies, Inc.
7018 1067 7283 AT&T
3967 1053 483 Exodus Communication
1 844 8506 BBN Planet
7046 826 973 UUNET Technologies, Inc.
8010 719 106 PublicNet Communications, Inc
1239 718 3387 Sprint
3908 688 1532 Supernet, Inc.
209 588 2215 Qwest
4323 544 454 Time Warner Communications, I
852 521 695 Telus Advanced Communications
690 495 87 Merit Network
2914 481 2269 Verio, Inc.
2149 478 317 Performance Systems, Inc.
4293 440 96 Cable & Wireless USA
3301 429 948 TeliaNet Sweden
705 424 249 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 /8:19 /9:5 /10:7 /11:12 /12:36
/13:89 /14:220 /15:386 /16:7065 /17:1358 /18:2440
/19:7067 /20:6033 /21:4740 /22:7133 /23:8935 /24:61426
/25:333 /26:323 /27:269 /28:252 /29:157 /30:184
/31:0 /32:64
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
701 1433 2243 UUNET Technologies, Inc.
1221 1394 1536 Telstra Pty Ltd
3967 870 1053 Exodus Communication
702 733 1067 UUNET Technologies, Inc.
8010 703 719 PublicNet Communications, Inc
7046 657 826 UUNET Technologies, Inc.
7018 551 1067 AT&T
690 491 495 Merit Network
4323 469 544 Time Warner Communications, I
3908 466 688 Supernet, Inc.
4293 426 440 Cable & Wireless USA
209 416 588 Qwest
1 408 844 BBN Planet
1239 398 718 Sprint
2764 366 413 connect.com.au pty ltd
2149 358 478 Performance Systems, Inc.
852 341 521 Telus Advanced Communications
705 334 424 UUNET Technologies, Inc.
703 326 397 UUNET Technologies, Inc.
4151 316 361 USDA
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 61:123 62:154 63:1908 64:1497 65:930
66:701 67:6 80:102 128:61 129:113 130:23
131:42 132:13 133:2 134:134 135:10 136:119
137:99 138:197 139:47 140:173 141:58 142:67
143:43 144:148 145:11 146:207 147:133 148:185
149:87 150:42 151:191 152:382 153:71 154:4
155:84 156:90 157:107 158:69 159:70 160:46
161:55 162:79 163:129 164:128 165:121 166:207
167:161 168:119 169:45 170:295 171:2 192:5364
193:2038 194:2055 195:846 196:457 198:3748 199:3425
200:2332 201:1 202:2839 203:4585 204:3323 205:2138
206:2760 207:2647 208:2959 209:2964 210:549 211:153
212:965 213:526 214:9 215:15 216:2988 217:434
218:6
End of report
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