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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 12 Dec, 2001
Analysis Summary
----------------
BGP routing table entries examined: 107610
Total ASes present in the Internet Routing Table: 12253
Origin-only ASes present in the Internet Routing Table: 10632
Origin ASes announcing only one prefix: 4600
Transit ASes present in the Internet Routing Table: 1621
Transit-only ASes present in the Internet Routing Table: 55
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: 13
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: 1260097243
Equivalent to 75 /8s, 27 /16s and 142 /24s
Percentage of available address space announced: 34.0
Percentage of allocated address space announced: 64.3
Percentage of available address space allocated: 52.8
Total number of prefixes smaller than registry allocations: 72490
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 17005
Prefixes being announced from the APNIC address blocks: 15516
APNIC Region origin ASes present in the Internet Routing Table: 1417
APNIC Region origin ASes announcing only one prefix: 460
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: 90011768
Equivalent to 5 /8s, 93 /16s and 120 /24s
Percentage of available APNIC address space announced: 66.5
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: 72717
Prefixes being announced from the ARIN address blocks: 52121
ARIN Region origin ASes present in the Internet Routing Table: 7261
ARIN Region origin ASes announcing only one prefix: 2228
ARIN Region transit ASes present in the Internet Routing Table: 739
Average ARIN Region AS path length visible: 5.2
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 223061638
Equivalent to 13 /8s, 75 /16s and 166 /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: 17882
Prefixes being announced from the RIPE address blocks: 14597
RIPE Region origin ASes present in the Internet Routing Table: 3521
RIPE Region origin ASes announcing only one prefix: 1912
RIPE Region transit ASes present in the Internet Routing Table: 626
Average RIPE Region AS path length visible: 5.9
Max RIPE Region AS path length visible: 15
Number of RIPE addresses announced to Internet: 111495812
Equivalent to 6 /8s, 165 /16s and 74 /24s
Percentage of available RIPE address space announced: 73.8
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 1522 1328 Telstra Pty Ltd
2764 391 356 connect.com.au pty ltd
703 383 336 UUNET Technologies, Inc.
2907 370 1831 SINET Japan
7474 307 287 Optus Communications Pty Ltd
4755 306 159 Videsh Sanchar Nigam Ltd. Aut
4134 257 1940 Data Communications Bureau
9443 235 86 Primus Telecommunications
4766 186 1421 Korea Internet Exchange for "
1659 175 1161 Taiwan Academic Network (TANe
4740 173 40 OzEmail ISP
17557 165 13 Pakistan Telecom
2521 161 171 PSINet Japan
9583 149 64 Satyam Infoway Ltd.,
4812 137 305 China Telecom (Group) - Shang
7539 137 134 TANet2, sponsored by NSC, TAI
9768 129 363 Korea Telecom
17676 125 1952 XTAGE CORPORATION
4713 119 934 NTT Communications Corporatio
4786 119 14 NetConnect Communications Pty
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv Description
702 1090 2755 UUNET Technologies, Inc.
3301 430 934 TeliaNet Sweden
1257 268 500 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 187 1960 Deutsche Telekom AG
786 182 1874 The JANET IP Service
719 164 292 LANLINK autonomous system
8708 151 21 Romania Data Systems S.A.
5400 146 63 Concert European Core Network
2856 136 778 BTnet UK Regional network
3303 134 577 Swisscom Ltd
5549 121 82 Nextra Deutschland GmbH + Co.
8895 116 110 Saudi Arabia AS
3269 112 811 TELECOM ITALIA
12302 111 7 MobiFon S.A.
517 110 247 KPNQwest Germany GmbH
8297 104 31 Teleglobe Autonomous System i
1290 96 396 PSINet UK Ltd.
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv Description
701 2186 9057 UUNET Technologies, Inc.
7018 1095 7339 AT&T
3967 980 466 Exodus Communication
1 851 8504 BBN Planet
1239 774 3419 Sprint
7046 732 877 UUNET Technologies, Inc.
8010 719 106 PublicNet Communications, Inc
3908 704 1583 Supernet, Inc.
209 614 2248 Qwest
4323 584 477 Time Warner Communications, I
852 574 995 Telus Advanced Communications
690 518 74 Merit Network
2914 476 2249 Verio, Inc.
705 474 348 UUNET Technologies, Inc.
2149 420 232 Performance Systems, Inc.
3549 406 890 Global Crossing
3561 397 2282 Cable & Wireless USA
7132 386 534 Southwestern Bell Internet Se
3741 350 766 The Internet Solution
4151 344 1285 USDA
Global Per AS prefix count summary
----------------------------------
ASN No of nets /20 equiv Description
701 2186 9057 UUNET Technologies, Inc.
1221 1522 1328 Telstra Pty Ltd
7018 1095 7339 AT&T
702 1090 2755 UUNET Technologies, Inc.
3967 980 466 Exodus Communication
1 851 8504 BBN Planet
1239 774 3419 Sprint
7046 732 877 UUNET Technologies, Inc.
8010 719 106 PublicNet Communications, Inc
3908 704 1583 Supernet, Inc.
209 614 2248 Qwest
4323 584 477 Time Warner Communications, I
852 574 995 Telus Advanced Communications
690 518 74 Merit Network
2914 476 2249 Verio, Inc.
705 474 348 UUNET Technologies, Inc.
3301 430 934 TeliaNet Sweden
2149 420 232 Performance Systems, Inc.
3549 406 890 Global Crossing
3561 397 2282 Cable & Wireless USA
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
22879 UNALLOCATED 12.47.234.0/23 7018 AT&T
22879 UNALLOCATED 12.150.32.0/25 3549 Global Crossing
22879 UNALLOCATED 12.150.50.0/23 7018 AT&T
22879 UNALLOCATED 12.150.52.0/23 7018 AT&T
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
1877 UNALLOCATED 192.108.201.0/24 1880 Stupi, house man's p
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
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 /11:11 /12:37
/13:89 /14:223 /15:387 /16:7065 /17:1368 /18:2464
/19:7138 /20:6210 /21:4689 /22:7105 /23:8859 /24:60498
/25:315 /26:305 /27:235 /28:205 /29:122 /30:180
/31:0 /32:75
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
701 1403 2186 UUNET Technologies, Inc.
1221 1376 1522 Telstra Pty Ltd
3967 798 980 Exodus Communication
702 706 1090 UUNET Technologies, Inc.
8010 703 719 PublicNet Communications, Inc
7046 571 732 UUNET Technologies, Inc.
7018 565 1095 AT&T
690 515 518 Merit Network
4323 494 584 Time Warner Communications, I
3908 482 704 Supernet, Inc.
209 441 614 Qwest
1239 441 774 Sprint
1 422 851 BBN Planet
852 367 574 Telus Advanced Communications
705 359 474 UUNET Technologies, Inc.
2764 349 391 connect.com.au pty ltd
2149 321 420 Performance Systems, Inc.
703 311 383 UUNET Technologies, Inc.
4151 298 344 USDA
3549 275 406 Global Crossing
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:3 9:1 12:436 13:10 15:1 17:5
20:1 24:855 25:1 26:1 32:73 38:13
40:3 43:1 44:2 52:1 53:2 57:12
61:157 62:150 63:1917 64:1490 65:995 66:757
67:11 68:1 80:118 128:61 129:108 130:23
131:41 132:15 133:2 134:132 135:10 136:96
137:106 138:22 139:30 140:102 141:59 142:69
143:44 144:53 145:12 146:218 147:94 148:130
149:87 150:42 151:38 152:394 153:37 154:6
155:85 156:84 157:117 158:69 159:74 160:45
161:54 162:85 163:129 164:120 165:98 166:204
167:162 168:124 169:47 170:300 171:2 191:1
192:5340 193:2072 194:2091 195:822 196:435 198:3760
199:3298 200:2390 201:1 202:2847 203:4570 204:3313
205:2127 206:2594 207:2693 208:2697 209:2922 210:586
211:145 212:991 213:548 214:9 215:14 216:2967
217:410 218:8
End of report
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