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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 13 Dec, 2001
Analysis Summary
----------------
BGP routing table entries examined: 107747
Total ASes present in the Internet Routing Table: 12268
Origin-only ASes present in the Internet Routing Table: 10639
Origin ASes announcing only one prefix: 4600
Transit ASes present in the Internet Routing Table: 1629
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: 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: 1260976752
Equivalent to 75 /8s, 40 /16s and 250 /24s
Percentage of available address space announced: 34.0
Percentage of allocated address space announced: 64.4
Percentage of available address space allocated: 52.8
Total number of prefixes smaller than registry allocations: 72598
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 16943
Prefixes being announced from the APNIC address blocks: 15460
APNIC Region origin ASes present in the Internet Routing Table: 1421
APNIC Region origin ASes announcing only one prefix: 465
APNIC Region transit ASes present in the Internet Routing Table: 239
Average APNIC Region AS path length visible: 5.2
Max APNIC Region AS path length visible: 14
Number of APNIC addresses announced to Internet: 90422264
Equivalent to 5 /8s, 99 /16s and 187 /24s
Percentage of available APNIC address space announced: 66.8
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: 72935
Prefixes being announced from the ARIN address blocks: 52258
ARIN Region origin ASes present in the Internet Routing Table: 7275
ARIN Region origin ASes announcing only one prefix: 2227
ARIN Region transit ASes present in the Internet Routing Table: 745
Average ARIN Region AS path length visible: 5.2
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 223720094
Equivalent to 13 /8s, 85 /16s and 178 /24s
Percentage of available ARIN address space announced: 83.3
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: 17863
Prefixes being announced from the RIPE address blocks: 14585
RIPE Region origin ASes present in the Internet Routing Table: 3519
RIPE Region origin ASes announcing only one prefix: 1908
RIPE Region transit ASes present in the Internet Routing Table: 631
Average RIPE Region AS path length visible: 5.9
Max RIPE Region AS path length visible: 15
Number of RIPE addresses announced to Internet: 111537540
Equivalent to 6 /8s, 165 /16s and 237 /24s
Percentage of available RIPE address space announced: 73.9
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 1516 1327 Telstra Pty Ltd
2764 391 356 connect.com.au pty ltd
703 383 336 UUNET Technologies, Inc.
2907 370 1831 SINET Japan
4755 307 160 Videsh Sanchar Nigam Ltd. Aut
7474 307 287 Optus Communications Pty Ltd
4134 257 1940 Data Communications Bureau
4766 186 1421 Korea Internet Exchange for "
1659 175 1161 Taiwan Academic Network (TANe
4740 170 40 OzEmail ISP
9443 170 61 Primus Telecommunications
17557 166 13 Pakistan Telecom
2521 160 171 PSINet Japan
9583 148 64 Satyam Infoway Ltd.,
7539 142 134 TANet2, sponsored by NSC, TAI
4812 137 305 China Telecom (Group) - Shang
9768 129 363 Korea Telecom
17676 125 1952 XTAGE CORPORATION
4713 120 942 NTT Communications Corporatio
4786 118 14 NetConnect Communications Pty
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv Description
702 1086 2753 UUNET Technologies, Inc.
3301 430 934 TeliaNet Sweden
1257 268 500 SWIPnet Swedish IP Network
3215 235 543 France Telecom / &Equant
680 232 2149 DFN-IP service G-WiN
5515 215 705 Sonera Finland Autonomous Sys
3320 187 1960 Deutsche Telekom AG
786 182 1874 The JANET IP Service
719 164 292 LANLINK autonomous system
8708 148 20 Romania Data Systems S.A.
5400 146 64 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 112 7 MobiFon S.A.
517 108 231 KPNQwest Germany GmbH
8297 105 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 2179 9040 UUNET Technologies, Inc.
7018 1095 7355 AT&T
3967 980 466 Exodus Communication
1 851 8522 BBN Planet
1239 774 3419 Sprint
7046 734 877 UUNET Technologies, Inc.
8010 719 106 PublicNet Communications, Inc
3908 706 1663 Supernet, Inc.
209 614 2249 Qwest
4323 584 477 Time Warner Communications, I
852 574 995 Telus Advanced Communications
690 523 75 Merit Network
705 472 345 UUNET Technologies, Inc.
2914 470 2235 Verio, Inc.
2149 418 231 Performance Systems, Inc.
3549 406 888 Global Crossing
3561 392 2282 Cable & Wireless USA
7132 386 534 Southwestern Bell Internet Se
3741 350 766 The Internet Solution
577 343 592 Bell Advanced Communications
Global Per AS prefix count summary
----------------------------------
ASN No of nets /20 equiv Description
701 2179 9040 UUNET Technologies, Inc.
1221 1516 1327 Telstra Pty Ltd
7018 1095 7355 AT&T
702 1086 2753 UUNET Technologies, Inc.
3967 980 466 Exodus Communication
1 851 8522 BBN Planet
1239 774 3419 Sprint
7046 734 877 UUNET Technologies, Inc.
8010 719 106 PublicNet Communications, Inc
3908 706 1663 Supernet, Inc.
209 614 2249 Qwest
4323 584 477 Time Warner Communications, I
852 574 995 Telus Advanced Communications
690 523 75 Merit Network
705 472 345 UUNET Technologies, Inc.
2914 470 2235 Verio, Inc.
3301 430 934 TeliaNet Sweden
2149 418 231 Performance Systems, Inc.
3549 406 888 Global Crossing
3561 392 2282 Cable & Wireless USA
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
22879 UNALLOCATED 12.47.234.0/23 3549 Global Crossing
22879 UNALLOCATED 12.150.32.0/25 3549 Global Crossing
22879 UNALLOCATED 12.150.50.0/23 3549 Global Crossing
22879 UNALLOCATED 12.150.52.0/23 3549 Global Crossing
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 /14:225 /15:389 /16:7068 /17:1364 /18:2465
/19:7130 /20:6226 /21:4674 /22:7112 /23:8866 /24:60619
/25:315 /26:305 /27:239 /28:206 /29:121 /30:184
/31:0 /32:72
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
701 1398 2179 UUNET Technologies, Inc.
1221 1371 1516 Telstra Pty Ltd
3967 798 980 Exodus Communication
702 705 1086 UUNET Technologies, Inc.
8010 703 719 PublicNet Communications, Inc
7046 573 734 UUNET Technologies, Inc.
7018 564 1095 AT&T
690 520 523 Merit Network
4323 494 584 Time Warner Communications, I
3908 483 706 Supernet, Inc.
209 441 614 Qwest
1239 441 774 Sprint
1 421 851 BBN Planet
852 367 574 Telus Advanced Communications
705 357 472 UUNET Technologies, Inc.
2764 349 391 connect.com.au pty ltd
2149 320 418 Performance Systems, Inc.
703 311 383 UUNET Technologies, Inc.
4151 297 343 USDA
3549 276 406 Global Crossing
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:3 9:1 12:432 13:10 15:1 17:5
20:1 24:840 25:1 26:1 32:73 38:13
40:3 43:1 44:2 52:1 53:2 57:12
61:156 62:158 63:1909 64:1490 65:1000 66:759
67:11 68:1 80:115 128:62 129:111 130:23
131:43 132:15 133:2 134:133 135:10 136:120
137:108 138:63 139:30 140:94 141:59 142:69
143:44 144:55 145:12 146:216 147:94 148:132
149:87 150:41 151:38 152:391 153:37 154:6
155:85 156:84 157:118 158:69 159:75 160:45
161:54 162:85 163:130 164:120 165:98 166:205
167:162 168:123 169:47 170:302 171:2 191:1
192:5344 193:2059 194:2086 195:821 196:434 198:3764
199:3311 200:2402 201:1 202:2835 203:4570 204:3316
205:2142 206:2602 207:2689 208:2671 209:2986 210:579
211:147 212:992 213:548 214:9 215:15 216:2975
217:412 218:8
End of report
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