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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 11 Dec, 2001
Analysis Summary
----------------
BGP routing table entries examined: 107538
Total ASes present in the Internet Routing Table: 12244
Origin-only ASes present in the Internet Routing Table: 10622
Origin ASes announcing only one prefix: 4595
Transit ASes present in the Internet Routing Table: 1622
Transit-only ASes present in the Internet Routing Table: 56
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: 9
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: 1260036160
Equivalent to 75 /8s, 26 /16s and 160 /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: 72451
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 16889
Prefixes being announced from the APNIC address blocks: 15424
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: 246
Average APNIC Region AS path length visible: 5.2
Max APNIC Region AS path length visible: 14
Number of APNIC addresses announced to Internet: 89782104
Equivalent to 5 /8s, 89 /16s and 247 /24s
Percentage of available APNIC address space announced: 66.4
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: 72829
Prefixes being announced from the ARIN address blocks: 52212
ARIN Region origin ASes present in the Internet Routing Table: 7257
ARIN Region origin ASes announcing only one prefix: 2229
ARIN Region transit ASes present in the Internet Routing Table: 737
Average ARIN Region AS path length visible: 5.2
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 223285654
Equivalent to 13 /8s, 79 /16s and 17 /24s
Percentage of available ARIN address space announced: 83.2
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: 17814
Prefixes being announced from the RIPE address blocks: 14529
RIPE Region origin ASes present in the Internet Routing Table: 3518
RIPE Region origin ASes announcing only one prefix: 1906
RIPE Region transit ASes present in the Internet Routing Table: 628
Average RIPE Region AS path length visible: 5.9
Max RIPE Region AS path length visible: 15
Number of RIPE addresses announced to Internet: 111387524
Equivalent to 6 /8s, 163 /16s and 163 /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 1483 1239 Telstra Pty Ltd
2764 391 356 connect.com.au pty ltd
703 385 337 UUNET Technologies, Inc.
2907 370 1831 SINET Japan
4755 306 159 Videsh Sanchar Nigam Ltd. Aut
7474 298 287 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 173 40 OzEmail ISP
9443 169 61 Primus Telecommunications
2521 161 171 PSINet Japan
17557 160 13 Pakistan Telecom
9583 146 48 Satyam Infoway Ltd.,
4812 137 305 China Telecom (Group) - Shang
7539 137 133 TANet2, sponsored by NSC, TAI
9768 127 362 Korea Telecom
17676 125 1952 XTAGE CORPORATION
4786 122 14 NetConnect Communications Pty
4713 119 934 NTT Communications Corporatio
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv Description
702 1092 2755 UUNET Technologies, Inc.
3301 430 934 TeliaNet Sweden
1257 268 500 SWIPnet Swedish IP Network
3215 236 543 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 149 20 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.
12302 112 7 MobiFon S.A.
517 110 247 KPNQwest Germany GmbH
3269 106 793 TELECOM ITALIA
8297 105 31 Teleglobe Autonomous System i
1290 96 396 PSINet UK Ltd.
5511 95 192 France Telecom
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv Description
701 2177 9040 UUNET Technologies, Inc.
7018 1097 7355 AT&T
3967 983 466 Exodus Communication
1 851 8504 BBN Planet
1239 774 3418 Sprint
7046 733 877 UUNET Technologies, Inc.
8010 719 106 PublicNet Communications, Inc
3908 702 1581 Supernet, Inc.
209 611 2248 Qwest
4323 585 477 Time Warner Communications, I
852 574 995 Telus Advanced Communications
690 515 73 Merit Network
2914 479 2253 Verio, Inc.
705 474 348 UUNET Technologies, Inc.
2149 423 232 Performance Systems, Inc.
3549 407 888 Global Crossing
3561 391 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 2177 9040 UUNET Technologies, Inc.
1221 1483 1239 Telstra Pty Ltd
7018 1097 7355 AT&T
702 1092 2755 UUNET Technologies, Inc.
3967 983 466 Exodus Communication
1 851 8504 BBN Planet
1239 774 3418 Sprint
7046 733 877 UUNET Technologies, Inc.
8010 719 106 PublicNet Communications, Inc
3908 702 1581 Supernet, Inc.
209 611 2248 Qwest
4323 585 477 Time Warner Communications, I
852 574 995 Telus Advanced Communications
690 515 73 Merit Network
2914 479 2253 Verio, Inc.
705 474 348 UUNET Technologies, Inc.
3301 430 934 TeliaNet Sweden
2149 423 232 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
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 192.108.199.0/24 1755 Ebone Transit Core
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 /14:222 /15:389 /16:7067 /17:1367 /18:2465
/19:7129 /20:6209 /21:4658 /22:7068 /23:8857 /24:60516
/25:314 /26:306 /27:232 /28:207 /29:119 /30:182
/31:0 /32:64
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
701 1403 2177 UUNET Technologies, Inc.
1221 1353 1483 Telstra Pty Ltd
3967 801 983 Exodus Communication
702 708 1092 UUNET Technologies, Inc.
8010 703 719 PublicNet Communications, Inc
7046 571 733 UUNET Technologies, Inc.
7018 566 1097 AT&T
690 512 515 Merit Network
4323 495 585 Time Warner Communications, I
3908 480 702 Supernet, Inc.
1239 442 774 Sprint
209 440 611 Qwest
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 324 423 Performance Systems, Inc.
703 313 385 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 24:860 25:1 26:1 32:73 38:13
40:3 43:1 44:2 52:1 53:2 57:12
61:155 62:156 63:1919 64:1491 65:993 66:750
67:8 68:1 80:114 128:61 129:114 130:23
131:44 132:15 133:2 134:134 135:10 136:122
137:108 138:63 139:30 140:102 141:59 142:69
143:44 144:52 145:12 146:216 147:94 148:130
149:86 150:42 151:38 152:393 153:37 154:6
155:84 156:84 157:116 158:69 159:75 160:45
161:54 162:85 163:129 164:118 165:97 166:205
167:161 168:124 169:47 170:299 171:2 191:1
192:5328 193:2079 194:2087 195:819 196:429 198:3751
199:3332 200:2391 201:1 202:2837 203:4502 204:3312
205:2149 206:2600 207:2702 208:2703 209:2923 210:579
211:198 212:917 213:542 214:9 215:15 216:2963
217:425 218:13
End of report
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