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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 10 Dec, 2001
Analysis Summary
----------------
BGP routing table entries examined: 107495
Total ASes present in the Internet Routing Table: 12231
Origin-only ASes present in the Internet Routing Table: 10617
Origin ASes announcing only one prefix: 4579
Transit ASes present in the Internet Routing Table: 1614
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: 20
Illegal AS announcements present in the Routing Table: 11
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: 1259953282
Equivalent to 75 /8s, 25 /16s and 92 /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: 72393
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 16886
Prefixes being announced from the APNIC address blocks: 15389
APNIC Region origin ASes present in the Internet Routing Table: 1414
APNIC Region origin ASes announcing only one prefix: 460
APNIC Region transit ASes present in the Internet Routing Table: 242
Average APNIC Region AS path length visible: 5.2
Max APNIC Region AS path length visible: 14
Number of APNIC addresses announced to Internet: 89746240
Equivalent to 5 /8s, 89 /16s and 107 /24s
Percentage of available APNIC address space announced: 66.3
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: 72875
Prefixes being announced from the ARIN address blocks: 52259
ARIN Region origin ASes present in the Internet Routing Table: 7259
ARIN Region origin ASes announcing only one prefix: 2224
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: 222908562
Equivalent to 13 /8s, 73 /16s and 80 /24s
Percentage of available ARIN address space announced: 83.0
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: 17727
Prefixes being announced from the RIPE address blocks: 14441
RIPE Region origin ASes present in the Internet Routing Table: 3508
RIPE Region origin ASes announcing only one prefix: 1895
RIPE Region transit ASes present in the Internet Routing Table: 624
Average RIPE Region AS path length visible: 5.9
Max RIPE Region AS path length visible: 20
Number of RIPE addresses announced to Internet: 111337028
Equivalent to 6 /8s, 162 /16s and 222 /24s
Percentage of available RIPE address space announced: 73.7
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 306 287 Optus Communications Pty Ltd
4755 302 159 Videsh Sanchar Nigam Ltd. Aut
4134 257 1940 Data Communications Bureau
4766 186 1421 Korea Internet Exchange for "
1659 175 1161 Taiwan Academic Network (TANe
4740 174 40 OzEmail ISP
9443 169 61 Primus Telecommunications
17557 163 13 Pakistan Telecom
2521 160 171 PSINet Japan
9583 147 48 Satyam Infoway Ltd.,
7539 138 134 TANet2, sponsored by NSC, TAI
4812 137 305 China Telecom (Group) - Shang
9768 127 362 Korea Telecom
4786 126 15 NetConnect Communications Pty
17676 125 1952 XTAGE CORPORATION
4713 120 936 NTT Communications Corporatio
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv Description
702 1087 2739 UUNET Technologies, Inc.
3301 430 934 TeliaNet Sweden
1257 268 500 SWIPnet Swedish IP Network
3215 235 545 France Telecom / &Equant
680 232 2149 DFN-IP service G-WiN
5515 212 705 Sonera Finland Autonomous Sys
3320 185 1960 Deutsche Telekom AG
786 182 1874 The JANET IP Service
719 164 292 LANLINK autonomous system
8708 149 20 Romania Data Systems S.A.
5400 145 63 Concert European Core Network
2856 134 777 BTnet UK Regional network
3303 134 577 Swisscom Ltd
5549 121 82 Nextra Deutschland GmbH + Co.
12302 111 7 MobiFon S.A.
517 110 247 KPNQwest Germany GmbH
3269 106 793 TELECOM ITALIA
8297 102 31 Teleglobe Autonomous System i
1290 96 396 PSINet UK Ltd.
5511 96 192 France Telecom
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv Description
701 2184 9041 UUNET Technologies, Inc.
7018 1095 7355 AT&T
3967 985 466 Exodus Communication
1 852 8504 BBN Planet
1239 773 3418 Sprint
7046 731 877 UUNET Technologies, Inc.
8010 719 106 PublicNet Communications, Inc
3908 702 1581 Supernet, Inc.
209 613 2248 Qwest
4323 586 477 Time Warner Communications, I
852 558 790 Telus Advanced Communications
690 510 73 Merit Network
2914 479 2253 Verio, Inc.
705 458 277 UUNET Technologies, Inc.
2149 423 248 Performance Systems, Inc.
3549 407 888 Global Crossing
3561 390 2281 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 2184 9041 UUNET Technologies, Inc.
1221 1522 1328 Telstra Pty Ltd
7018 1095 7355 AT&T
702 1087 2739 UUNET Technologies, Inc.
3967 985 466 Exodus Communication
1 852 8504 BBN Planet
1239 773 3418 Sprint
7046 731 877 UUNET Technologies, Inc.
8010 719 106 PublicNet Communications, Inc
3908 702 1581 Supernet, Inc.
209 613 2248 Qwest
4323 586 477 Time Warner Communications, I
852 558 790 Telus Advanced Communications
690 510 73 Merit Network
2914 479 2253 Verio, Inc.
705 458 277 UUNET Technologies, Inc.
3301 430 934 TeliaNet Sweden
2149 423 248 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
22518 UNALLOCATED 65.206.168.0/24 701 UUNET Technologies,
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,
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
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 /14:222 /15:388 /16:7071 /17:1361 /18:2462
/19:7132 /20:6204 /21:4674 /22:7086 /23:8847 /24:60441
/25:316 /26:312 /27:236 /28:209 /29:124 /30:181
/31:0 /32:62
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
701 1402 2184 UUNET Technologies, Inc.
1221 1376 1522 Telstra Pty Ltd
3967 803 985 Exodus Communication
702 705 1087 UUNET Technologies, Inc.
8010 703 719 PublicNet Communications, Inc
7046 571 731 UUNET Technologies, Inc.
7018 564 1095 AT&T
690 507 510 Merit Network
4323 496 586 Time Warner Communications, I
3908 480 702 Supernet, Inc.
1239 441 773 Sprint
209 440 613 Qwest
1 423 852 BBN Planet
852 367 558 Telus Advanced Communications
705 354 458 UUNET Technologies, Inc.
2764 349 391 connect.com.au pty ltd
2149 323 423 Performance Systems, Inc.
703 311 383 UUNET Technologies, Inc.
4151 298 344 USDA
3549 277 407 Global Crossing
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:4 9:1 12:431 13:10 15:1 17:5
20:1 24:861 25:1 26:1 32:73 38:13
40:1 43:1 44:2 52:1 53:2 57:12
61:154 62:148 63:1920 64:1506 65:992 66:774
67:8 68:1 80:114 128:61 129:114 130:23
131:44 132:15 133:2 134:133 135:10 136:121
137:110 138:63 139:30 140:102 141:59 142:69
143:44 144:53 145:12 146:216 147:94 148:129
149:86 150:42 151:38 152:393 153:37 154:6
155:85 156:84 157:113 158:69 159:75 160:45
161:54 162:85 163:126 164:117 165:97 166:205
167:162 168:122 169:47 170:300 171:2 191:1
192:5333 193:2075 194:2042 195:811 196:435 198:3759
199:3326 200:2370 201:1 202:2825 203:4540 204:3310
205:2153 206:2601 207:2704 208:2704 209:2932 210:575
211:145 212:918 213:531 214:9 215:15 216:2963
217:424 218:7
End of report
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