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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 05 Dec, 2001
Analysis Summary
----------------
BGP routing table entries examined: 107611
Total ASes present in the Internet Routing Table: 12207
Origin-only ASes present in the Internet Routing Table: 10589
Origin ASes announcing only one prefix: 4559
Transit ASes present in the Internet Routing Table: 1618
Transit-only ASes present in the Internet Routing Table: 59
Average AS path length visible in the Internet Routing Table: 5.3
Max AS path length visible: 17
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: 17
Number of addresses announced to Internet: 1278644503
Equivalent to 76 /8s, 54 /16s and 145 /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: 72521
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 16918
Prefixes being announced from the APNIC address blocks: 15436
APNIC Region origin ASes present in the Internet Routing Table: 1413
APNIC Region origin ASes announcing only one prefix: 462
APNIC Region transit ASes present in the Internet Routing Table: 243
Average APNIC Region AS path length visible: 5.1
Max APNIC Region AS path length visible: 14
Number of APNIC addresses announced to Internet: 89536200
Equivalent to 5 /8s, 86 /16s and 54 /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: 72836
Prefixes being announced from the ARIN address blocks: 52178
ARIN Region origin ASes present in the Internet Routing Table: 7245
ARIN Region origin ASes announcing only one prefix: 2218
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: 17
Number of ARIN addresses announced to Internet: 239162554
Equivalent to 14 /8s, 65 /16s and 84 /24s
Percentage of available ARIN address space announced: 89.1
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: 17850
Prefixes being announced from the RIPE address blocks: 14537
RIPE Region origin ASes present in the Internet Routing Table: 3492
RIPE Region origin ASes announcing only one prefix: 1879
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: 111172532
Equivalent to 6 /8s, 160 /16s and 91 /24s
Percentage of available RIPE address space announced: 73.6
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 391 356 connect.com.au pty ltd
703 385 347 UUNET Technologies, Inc.
2907 371 1863 SINET Japan
7474 306 287 Optus Communications Pty Ltd
4755 302 159 Videsh Sanchar Nigam Ltd. Aut
4134 257 1940 Data Communications Bureau
4766 184 1435 Korea Internet Exchange for "
4740 177 40 OzEmail ISP
9443 173 62 Primus Telecommunications
2521 168 172 PSINet Japan
1659 164 1124 Taiwan Academic Network (TANe
17557 162 13 Pakistan Telecom
9583 154 48 Satyam Infoway Ltd.,
4812 137 305 China Telecom (Group) - Shang
7539 135 134 TANet2, sponsored by NSC, TAI
4786 129 15 NetConnect Communications Pty
9768 127 362 Korea Telecom
17676 125 1952 XTAGE CORPORATION
4713 121 944 NTT Communications Corporatio
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv Description
702 1097 2763 UUNET Technologies, Inc.
3301 430 934 TeliaNet Sweden
1257 269 500 SWIPnet Swedish IP Network
3215 237 543 France Telecom / &Equant
680 232 2149 DFN-IP service G-WiN
5515 212 705 Sonera Finland Autonomous Sys
3320 189 1960 Deutsche Telekom AG
786 183 1874 The JANET IP Service
719 164 292 LANLINK autonomous system
8708 150 21 Romania Data Systems S.A.
5400 147 65 Concert European Core Network
3246 141 191 Song Networks / Clinet
2856 134 777 BTnet UK Regional network
3303 133 577 Swisscom Ltd
5549 121 82 Nextra Deutschland GmbH + Co.
517 111 248 KPNQwest Germany GmbH
12302 110 7 MobiFon S.A.
3269 105 799 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 2168 9075 UUNET Technologies, Inc.
7018 1095 7363 AT&T
3967 1017 467 Exodus Communication
1 855 8503 BBN Planet
1239 751 3382 Sprint
7046 721 888 UUNET Technologies, Inc.
8010 719 106 PublicNet Communications, Inc
3908 699 1581 Supernet, Inc.
209 611 2232 Qwest
4323 586 477 Time Warner Communications, I
852 544 695 Telus Advanced Communications
690 508 88 Merit Network
2914 481 2253 Verio, Inc.
705 459 267 UUNET Technologies, Inc.
2149 427 232 Performance Systems, Inc.
3549 407 888 Global Crossing
3561 387 2294 Cable & Wireless USA
7132 386 534 Southwestern Bell Internet Se
3741 350 766 The Internet Solution
577 349 625 Bell Advanced Communications
Global Per AS prefix count summary
----------------------------------
ASN No of nets /20 equiv Description
701 2168 9075 UUNET Technologies, Inc.
1221 1531 1328 Telstra Pty Ltd
702 1097 2763 UUNET Technologies, Inc.
7018 1095 7363 AT&T
3967 1017 467 Exodus Communication
1 855 8503 BBN Planet
1239 751 3382 Sprint
7046 721 888 UUNET Technologies, Inc.
8010 719 106 PublicNet Communications, Inc
3908 699 1581 Supernet, Inc.
209 611 2232 Qwest
4323 586 477 Time Warner Communications, I
852 544 695 Telus Advanced Communications
690 508 88 Merit Network
2914 481 2253 Verio, Inc.
705 459 267 UUNET Technologies, Inc.
3301 430 934 TeliaNet Sweden
2149 427 232 Performance Systems, Inc.
3549 407 888 Global Crossing
2764 391 356 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
68.1.0.0/17 22773 Cox Communications, Inc. Atla
68.1.128.0/18 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 /15:386 /16:7081 /17:1361 /18:2456
/19:7105 /20:6184 /21:4705 /22:7081 /23:8836 /24:60570
/25:322 /26:317 /27:245 /28:212 /29:130 /30:171
/31:0 /32:59
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
701 1386 2168 UUNET Technologies, Inc.
1221 1385 1531 Telstra Pty Ltd
3967 835 1017 Exodus Communication
702 712 1097 UUNET Technologies, Inc.
8010 703 719 PublicNet Communications, Inc
7018 565 1095 AT&T
7046 557 721 UUNET Technologies, Inc.
690 504 508 Merit Network
4323 496 586 Time Warner Communications, I
3908 474 699 Supernet, Inc.
209 439 611 Qwest
1 426 855 BBN Planet
1239 421 751 Sprint
852 365 544 Telus Advanced Communications
705 360 459 UUNET Technologies, Inc.
2764 349 391 connect.com.au pty ltd
2149 324 427 Performance Systems, Inc.
703 310 385 UUNET Technologies, Inc.
4151 281 327 USDA
3549 277 407 Global Crossing
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:3 9:1 12:430 13:10 15:1 17:5
20:1 24:864 25:1 26:1 32:73 38:13
40:1 43:1 44:2 52:1 53:2 57:12
61:144 62:150 63:1921 64:1483 65:975 66:738
67:8 80:108 128:61 129:112 130:23 131:44
132:14 133:2 134:138 135:10 136:107 137:116
138:63 139:30 140:98 141:59 142:68 143:43
144:56 145:13 146:216 147:90 148:129 149:87
150:41 151:38 152:392 153:37 154:6 155:85
156:83 157:114 158:69 159:74 160:45 161:54
162:83 163:130 164:120 165:97 166:205 167:162
168:121 169:46 170:303 171:2 191:1 192:5374
193:2065 194:2083 195:835 196:433 198:3757 199:3316
200:2393 201:1 202:2862 203:4569 204:3309 205:2151
206:2617 207:2670 208:2720 209:2939 210:588 211:145
212:951 213:538 214:9 215:15 216:2966 217:421
218:7
End of report
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