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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 20:00 16 Nov, 2001
Analysis Summary
----------------
BGP routing table entries examined: 108693
Total ASes present in the Internet Routing Table: 12107
Origin-only ASes present in the Internet Routing Table: 10521
Origin ASes announcing only one prefix: 4498
Transit ASes present in the Internet Routing Table: 1586
Transit-only ASes present in the Internet Routing Table: 52
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: 3
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: 1258828063
Equivalent to 75 /8s, 8 /16s and 49 /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: 73803
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 16943
Prefixes being announced from the APNIC address blocks: 15418
APNIC Region origin ASes present in the Internet Routing Table: 1404
APNIC Region origin ASes announcing only one prefix: 457
APNIC Region transit ASes present in the Internet Routing Table: 237
Average APNIC Region AS path length visible: 5.2
Max APNIC Region AS path length visible: 14
Number of APNIC addresses announced to Internet: 88894594
Equivalent to 5 /8s, 76 /16s and 108 /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: 73926
Prefixes being announced from the ARIN address blocks: 52711
ARIN Region origin ASes present in the Internet Routing Table: 7201
ARIN Region origin ASes announcing only one prefix: 2202
ARIN Region transit ASes present in the Internet Routing Table: 734
Average ARIN Region AS path length visible: 5.2
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 221130946
Equivalent to 13 /8s, 46 /16s and 48 /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: 17823
Prefixes being announced from the RIPE address blocks: 14445
RIPE Region origin ASes present in the Internet Routing Table: 3450
RIPE Region origin ASes announcing only one prefix: 1839
RIPE Region transit ASes present in the Internet Routing Table: 604
Average RIPE Region AS path length visible: 5.9
Max RIPE Region AS path length visible: 15
Number of RIPE addresses announced to Internet: 110138380
Equivalent to 6 /8s, 144 /16s and 148 /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
703 395 360 UUNET Technologies, Inc.
2907 372 1848 SINET Japan
4755 355 167 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 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 1080 2146 UUNET Technologies, Inc.
3301 433 949 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
2856 133 777 BTnet UK Regional network
719 132 289 LANLINK autonomous system
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 2241 9179 UUNET Technologies, Inc.
7018 1084 7300 AT&T
3967 1056 483 Exodus Communication
1 842 8504 BBN Planet
7046 824 973 UUNET Technologies, Inc.
1239 722 3369 Sprint
8010 719 106 PublicNet Communications, Inc
3908 685 1532 Supernet, Inc.
209 580 2216 Qwest
4323 541 453 Time Warner Communications, I
852 520 695 Telus Advanced Communications
690 495 86 Merit Network
2914 483 2270 Verio, Inc.
2149 482 333 Performance Systems, Inc.
4293 444 112 Cable & Wireless USA
705 425 249 UUNET Technologies, Inc.
3549 391 887 Global Crossing
3561 378 2303 Cable & Wireless USA
4151 365 1254 USDA
3741 349 765 The Internet Solution
Global Per AS prefix count summary
----------------------------------
ASN No of nets /20 equiv Description
701 2241 9179 UUNET Technologies, Inc.
1221 1539 1303 Telstra Pty Ltd
7018 1084 7300 AT&T
702 1080 2146 UUNET Technologies, Inc.
3967 1056 483 Exodus Communication
1 842 8504 BBN Planet
7046 824 973 UUNET Technologies, Inc.
1239 722 3369 Sprint
8010 719 106 PublicNet Communications, Inc
3908 685 1532 Supernet, Inc.
209 580 2216 Qwest
4323 541 453 Time Warner Communications, I
852 520 695 Telus Advanced Communications
690 495 86 Merit Network
2914 483 2270 Verio, Inc.
2149 482 333 Performance Systems, Inc.
4293 444 112 Cable & Wireless USA
3301 433 949 TeliaNet Sweden
705 425 249 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.
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 /16:7069 /17:1357 /18:2438
/19:7066 /20:6034 /21:4735 /22:7123 /23:8940 /24:61572
/25:334 /26:322 /27:271 /28:251 /29:158 /30:183
/31:0 /32:67
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
701 1431 2241 UUNET Technologies, Inc.
1221 1397 1539 Telstra Pty Ltd
3967 873 1056 Exodus Communication
702 735 1080 UUNET Technologies, Inc.
8010 703 719 PublicNet Communications, Inc
7046 655 824 UUNET Technologies, Inc.
7018 560 1084 AT&T
690 491 495 Merit Network
4323 467 541 Time Warner Communications, I
3908 463 685 Supernet, Inc.
4293 429 444 Cable & Wireless USA
209 407 580 Qwest
1 406 842 BBN Planet
1239 404 722 Sprint
2764 366 413 connect.com.au pty ltd
2149 360 482 Performance Systems, Inc.
852 340 520 Telus Advanced Communications
705 335 425 UUNET Technologies, Inc.
703 324 395 UUNET Technologies, Inc.
4151 320 365 USDA
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:5 9:1 12:422 13:10 15:1 17:5
20:1 24:845 25:1 26:1 32:73 38:13
43:2 44:2 47:2 52:1 53:9 57:12
61:123 62:153 63:1905 64:1502 65:916 66:718
67:6 80:104 128:61 129:113 130:23 131:42
132:13 133:2 134:134 135:10 136:119 137:99
138:197 139:47 140:173 141:58 142:67 143:43
144:147 145:11 146:209 147:133 148:180 149:85
150:42 151:191 152:382 153:71 154:8 155:84
156:92 157:107 158:69 159:70 160:46 161:55
162:77 163:129 164:129 165:122 166:207 167:161
168:118 169:46 170:297 171:2 192:5385 193:2025
194:2050 195:857 196:459 198:3758 199:3444 200:2374
201:1 202:2837 203:4578 204:3361 205:2134 206:2765
207:2650 208:2970 209:2972 210:548 211:149 212:960
213:533 214:9 215:15 216:2993 217:435 218:6
End of report
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