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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 22 Nov, 2001
Analysis Summary
----------------
BGP routing table entries examined: 107981
Total ASes present in the Internet Routing Table: 12125
Origin-only ASes present in the Internet Routing Table: 10541
Origin ASes announcing only one prefix: 4524
Transit ASes present in the Internet Routing Table: 1584
Transit-only ASes present in the Internet Routing Table: 51
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: 8
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: 1258965053
Equivalent to 75 /8s, 10 /16s and 72 /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: 73080
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 16957
Prefixes being announced from the APNIC address blocks: 15445
APNIC Region origin ASes present in the Internet Routing Table: 1407
APNIC Region origin ASes announcing only one prefix: 463
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: 88897242
Equivalent to 5 /8s, 76 /16s and 118 /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: 73093
Prefixes being announced from the ARIN address blocks: 52258
ARIN Region origin ASes present in the Internet Routing Table: 7211
ARIN Region origin ASes announcing only one prefix: 2209
ARIN Region transit ASes present in the Internet Routing Table: 726
Average ARIN Region AS path length visible: 5.2
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 221359311
Equivalent to 13 /8s, 49 /16s and 172 /24s
Percentage of available ARIN address space announced: 82.5
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: 17925
Prefixes being announced from the RIPE address blocks: 14586
RIPE Region origin ASes present in the Internet Routing Table: 3457
RIPE Region origin ASes announcing only one prefix: 1852
RIPE Region transit ASes present in the Internet Routing Table: 610
Average RIPE Region AS path length visible: 5.9
Max RIPE Region AS path length visible: 15
Number of RIPE addresses announced to Internet: 110192948
Equivalent to 6 /8s, 145 /16s and 105 /24s
Percentage of available RIPE address space announced: 73.0
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 1532 1305 Telstra Pty Ltd
2764 406 357 connect.com.au pty ltd
703 384 344 UUNET Technologies, Inc.
2907 371 1848 SINET Japan
4755 354 171 Videsh Sanchar Nigam Ltd. Aut
7474 302 275 Optus Communications Pty Ltd
4134 255 1924 Data Communications Bureau
4766 185 1431 Korea Internet Exchange for "
4740 180 41 OzEmail ISP
9443 169 53 Primus Telecommunications
1659 165 1157 Taiwan Academic Network (TANe
2521 157 172 PSINet Japan
17557 156 12 Pakistan Telecom
7539 142 120 TANet2, sponsored by NSC, TAI
9583 140 47 Satyam Infoway Ltd.,
4812 137 305 China Telecom (Group) - Shang
4786 132 16 NetConnect Communications Pty
9768 127 362 Korea Telecom
17676 125 1952 XTAGE CORPORATION
7657 121 23 The Internet Group Limited
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv Description
702 1085 2119 UUNET Technologies, Inc.
3301 427 948 TeliaNet Sweden
1257 268 500 SWIPnet Swedish IP Network
3215 241 555 France Telecom / &Equant
680 231 2148 DFN-IP service G-WiN
5515 198 704 Sonera Finland Autonomous Sys
3320 193 1959 Deutsche Telekom AG
786 184 1890 The JANET IP Service
719 166 292 LANLINK autonomous system
8708 166 17 Romania Data Systems S.A.
5495 151 8 University Network
5400 138 62 Concert European Core Network
2856 135 778 BTnet UK Regional network
3303 131 561 Swisscom Ltd
5549 122 82 Nextra Deutschland GmbH + Co.
517 112 248 KPNQwest Germany GmbH
1273 107 165 Cable & Wireless ECRC GmbH
3269 107 809 TELECOM ITALIA
12302 107 7 MobiFon S.A.
1290 100 398 PSINet UK Ltd.
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv Description
701 2236 9164 UUNET Technologies, Inc.
7018 1084 7330 AT&T
3967 1041 482 Exodus Communication
1 833 8550 BBN Planet
7046 733 935 UUNET Technologies, Inc.
1239 722 3387 Sprint
8010 719 106 PublicNet Communications, Inc
3908 690 1532 Supernet, Inc.
209 590 2216 Qwest
4323 568 467 Time Warner Communications, I
852 539 697 Telus Advanced Communications
690 496 71 Merit Network
2914 481 2268 Verio, Inc.
2149 468 269 Performance Systems, Inc.
705 434 251 UUNET Technologies, Inc.
3549 394 888 Global Crossing
3561 388 2288 Cable & Wireless USA
7132 385 532 Southwestern Bell Internet Se
4151 368 1255 USDA
3741 350 766 The Internet Solution
Global Per AS prefix count summary
----------------------------------
ASN No of nets /20 equiv Description
701 2236 9164 UUNET Technologies, Inc.
1221 1532 1305 Telstra Pty Ltd
702 1085 2119 UUNET Technologies, Inc.
7018 1084 7330 AT&T
3967 1041 482 Exodus Communication
1 833 8550 BBN Planet
7046 733 935 UUNET Technologies, Inc.
1239 722 3387 Sprint
8010 719 106 PublicNet Communications, Inc
3908 690 1532 Supernet, Inc.
209 590 2216 Qwest
4323 568 467 Time Warner Communications, I
852 539 697 Telus Advanced Communications
690 496 71 Merit Network
2914 481 2268 Verio, Inc.
2149 468 269 Performance Systems, Inc.
705 434 251 UUNET Technologies, Inc.
3301 427 948 TeliaNet Sweden
2764 406 357 connect.com.au pty ltd
3549 394 888 Global Crossing
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,
Advertised Unregistered Addresses
---------------------------------
Network Origin AS Description
39.0.0.0/8 4554 Exchange Point Blocks
100.0.0.0/24 10061 Financial Supervisory Service
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 /14:221 /15:388 /16:7067 /17:1350 /18:2437
/19:7082 /20:6073 /21:4705 /22:7107 /23:8872 /24:60826
/25:338 /26:325 /27:278 /28:335 /29:167 /30:182
/31:0 /32:61
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
701 1429 2236 UUNET Technologies, Inc.
1221 1389 1532 Telstra Pty Ltd
3967 859 1041 Exodus Communication
702 743 1085 UUNET Technologies, Inc.
8010 703 719 PublicNet Communications, Inc
7046 565 733 UUNET Technologies, Inc.
7018 556 1084 AT&T
690 493 496 Merit Network
4323 487 568 Time Warner Communications, I
3908 468 690 Supernet, Inc.
209 419 590 Qwest
1239 401 722 Sprint
1 398 833 BBN Planet
2764 363 406 connect.com.au pty ltd
852 359 539 Telus Advanced Communications
2149 355 468 Performance Systems, Inc.
705 341 434 UUNET Technologies, Inc.
4151 323 368 USDA
703 313 384 UUNET Technologies, Inc.
4755 305 354 Videsh Sanchar Nigam Ltd. Aut
Number of /24s announced per /8 block (Global)
----------------------------------------------
9:1 12:425 13:10 15:1 17:5 20:1
24:833 25:1 26:1 32:72 38:13 40:1
43:1 44:2 47:2 52:1 53:3 57:12
61:122 62:155 63:1903 64:1485 65:941 66:731
67:8 80:94 100:1 128:61 129:111 130:23
131:41 132:13 133:2 134:134 135:10 136:113
137:98 138:62 139:30 140:89 141:58 142:67
143:41 144:57 145:11 146:211 147:91 148:187
149:89 150:42 151:191 152:383 153:71 154:8
155:84 156:91 157:107 158:69 159:71 160:45
161:51 162:82 163:130 164:122 165:126 166:203
167:160 168:121 169:45 170:297 171:2 192:5360
193:2037 194:2083 195:841 196:445 198:3756 199:3453
200:2373 201:1 202:2873 203:4581 204:3320 205:2131
206:2647 207:2671 208:2753 209:3015 210:570 211:146
212:942 213:519 214:9 215:15 216:2926 217:428
218:6
End of report
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