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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 03 Dec, 2001
Analysis Summary
----------------
BGP routing table entries examined: 107618
Total ASes present in the Internet Routing Table: 12191
Origin-only ASes present in the Internet Routing Table: 10576
Origin ASes announcing only one prefix: 4558
Transit ASes present in the Internet Routing Table: 1615
Transit-only ASes present in the Internet Routing Table: 57
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: 1278301027
Equivalent to 76 /8s, 49 /16s and 83 /24s
Percentage of available address space announced: 34.5
Percentage of allocated address space announced: 65.8
Percentage of available address space allocated: 52.4
Total number of prefixes smaller than registry allocations: 72582
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 16943
Prefixes being announced from the APNIC address blocks: 15438
APNIC Region origin ASes present in the Internet Routing Table: 1411
APNIC Region origin ASes announcing only one prefix: 463
APNIC Region transit ASes present in the Internet Routing Table: 245
Average APNIC Region AS path length visible: 5.1
Max APNIC Region AS path length visible: 14
Number of APNIC addresses announced to Internet: 89490728
Equivalent to 5 /8s, 85 /16s and 133 /24s
Percentage of available APNIC address space announced: 75.5
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: 72847
Prefixes being announced from the ARIN address blocks: 52210
ARIN Region origin ASes present in the Internet Routing Table: 7244
ARIN Region origin ASes announcing only one prefix: 2220
ARIN Region transit ASes present in the Internet Routing Table: 742
Average ARIN Region AS path length visible: 5.2
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 238933970
Equivalent to 14 /8s, 61 /16s and 215 /24s
Percentage of available ARIN address space announced: 89.0
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: 17821
Prefixes being announced from the RIPE address blocks: 14521
RIPE Region origin ASes present in the Internet Routing Table: 3481
RIPE Region origin ASes announcing only one prefix: 1875
RIPE Region transit ASes present in the Internet Routing Table: 614
Average RIPE Region AS path length visible: 5.9
Max RIPE Region AS path length visible: 15
Number of RIPE addresses announced to Internet: 111031444
Equivalent to 6 /8s, 158 /16s and 52 /24s
Percentage of available RIPE address space announced: 73.5
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 1531 1328 Telstra Pty Ltd
2764 395 356 connect.com.au pty ltd
703 383 338 UUNET Technologies, Inc.
2907 371 1863 SINET Japan
4755 305 159 Videsh Sanchar Nigam Ltd. Aut
7474 305 287 Optus Communications Pty Ltd
4134 256 1932 Data Communications Bureau
4766 184 1435 Korea Internet Exchange for "
4740 172 36 OzEmail ISP
9443 172 62 Primus Telecommunications
17557 166 13 Pakistan Telecom
1659 164 1124 Taiwan Academic Network (TANe
2521 163 172 PSINet Japan
9583 153 48 Satyam Infoway Ltd.,
4812 137 305 China Telecom (Group) - Shang
7539 137 134 TANet2, sponsored by NSC, TAI
4786 129 15 NetConnect Communications Pty
9768 127 362 Korea Telecom
17676 125 1952 XTAGE CORPORATION
7657 124 23 The Internet Group Limited
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv Description
702 1079 2762 UUNET Technologies, Inc.
3301 429 934 TeliaNet Sweden
1257 268 500 SWIPnet Swedish IP Network
3215 237 543 France Telecom / &Equant
680 231 2148 DFN-IP service G-WiN
5515 212 705 Sonera Finland Autonomous Sys
3320 191 1960 Deutsche Telekom AG
786 183 1874 The JANET IP Service
719 166 292 LANLINK autonomous system
8708 163 21 Romania Data Systems S.A.
3246 143 191 Song Networks / Clinet
5400 143 64 Concert European Core Network
2856 134 777 BTnet UK Regional network
3303 132 561 Swisscom Ltd
5549 121 82 Nextra Deutschland GmbH + Co.
517 111 248 KPNQwest Germany GmbH
12302 107 7 MobiFon S.A.
3269 105 799 TELECOM ITALIA
1290 100 398 PSINet UK Ltd.
8297 95 31 Teleglobe Autonomous System i
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv Description
701 2167 9074 UUNET Technologies, Inc.
7018 1095 7363 AT&T
3967 1018 466 Exodus Communication
1 846 8534 BBN Planet
1239 746 3381 Sprint
7046 720 888 UUNET Technologies, Inc.
8010 719 106 PublicNet Communications, Inc
3908 698 1549 Supernet, Inc.
209 609 2217 Qwest
4323 585 477 Time Warner Communications, I
852 545 697 Telus Advanced Communications
690 503 72 Merit Network
2914 480 2253 Verio, Inc.
705 442 251 UUNET Technologies, Inc.
2149 430 250 Performance Systems, Inc.
3549 406 888 Global Crossing
3561 386 2278 Cable & Wireless USA
7132 386 534 Southwestern Bell Internet Se
4151 357 1286 USDA
3741 350 766 The Internet Solution
Global Per AS prefix count summary
----------------------------------
ASN No of nets /20 equiv Description
701 2167 9074 UUNET Technologies, Inc.
1221 1531 1328 Telstra Pty Ltd
7018 1095 7363 AT&T
702 1079 2762 UUNET Technologies, Inc.
3967 1018 466 Exodus Communication
1 846 8534 BBN Planet
1239 746 3381 Sprint
7046 720 888 UUNET Technologies, Inc.
8010 719 106 PublicNet Communications, Inc
3908 698 1549 Supernet, Inc.
209 609 2217 Qwest
4323 585 477 Time Warner Communications, I
852 545 697 Telus Advanced Communications
690 503 72 Merit Network
2914 480 2253 Verio, Inc.
705 442 251 UUNET Technologies, Inc.
2149 430 250 Performance Systems, Inc.
3301 429 934 TeliaNet Sweden
3549 406 888 Global Crossing
2764 395 356 connect.com.au pty ltd
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
22830 UNALLOCATED 66.100.87.0/24 6347 SAVVIS Communication
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
22830 UNALLOCATED 206.153.0.0/24 6347 SAVVIS Communication
22830 UNALLOCATED 206.153.21.0/24 6347 SAVVIS Communication
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 /8:19 /9:5 /10:7 /11:12 /12:37
/13:89 /14:221 /15:385 /16:7082 /17:1359 /18:2451
/19:7107 /20:6156 /21:4694 /22:7076 /23:8822 /24:60574
/25:327 /26:318 /27:259 /28:233 /29:142 /30:176
/31:0 /32:67
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
701 1386 2167 UUNET Technologies, Inc.
1221 1385 1531 Telstra Pty Ltd
3967 836 1018 Exodus Communication
8010 703 719 PublicNet Communications, Inc
702 691 1079 UUNET Technologies, Inc.
7018 565 1095 AT&T
7046 556 720 UUNET Technologies, Inc.
690 500 503 Merit Network
4323 495 585 Time Warner Communications, I
3908 475 698 Supernet, Inc.
209 438 609 Qwest
1 415 846 BBN Planet
1239 415 746 Sprint
852 365 545 Telus Advanced Communications
2764 353 395 connect.com.au pty ltd
705 349 442 UUNET Technologies, Inc.
2149 323 430 Performance Systems, Inc.
4151 311 357 USDA
703 310 383 UUNET Technologies, Inc.
3549 276 406 Global Crossing
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:4 9:1 12:425 13:10 15:1 17:5
20:1 24:862 25:1 26:1 32:73 38:13
40:1 43:1 44:2 52:1 53:2 57:12
61:130 62:148 63:1920 64:1486 65:971 66:743
67:8 80:108 128:61 129:111 130:23 131:44
132:14 133:2 134:136 135:10 136:115 137:118
138:63 139:30 140:99 141:59 142:68 143:43
144:54 145:13 146:211 147:90 148:129 149:87
150:42 151:38 152:389 153:37 154:6 155:85
156:82 157:115 158:69 159:73 160:45 161:53
162:84 163:129 164:120 165:96 166:205 167:162
168:120 169:46 170:302 171:2 191:1 192:5361
193:2064 194:2087 195:833 196:428 198:3760 199:3335
200:2396 201:1 202:2857 203:4560 204:3318 205:2147
206:2607 207:2676 208:2727 209:2960 210:589 211:144
212:952 213:534 214:9 215:15 216:2972 217:424
218:7
End of report
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