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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 19 Nov, 2001
Analysis Summary
----------------
BGP routing table entries examined: 107955
Total ASes present in the Internet Routing Table: 12100
Origin-only ASes present in the Internet Routing Table: 10522
Origin ASes announcing only one prefix: 4500
Transit ASes present in the Internet Routing Table: 1578
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: 6
Non-routable prefixes present in the Routing Table: 0
Prefixes being announced from the IANA Reserved Address blocks: 14
Number of addresses announced to Internet: 1258318965
Equivalent to 75 /8s, 0 /16s and 108 /24s
Percentage of available address space announced: 33.9
Percentage of allocated address space announced: 64.8
Percentage of available address space allocated: 52.4
Total number of prefixes smaller than registry allocations: 73137
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 16724
Prefixes being announced from the APNIC address blocks: 15206
APNIC Region origin ASes present in the Internet Routing Table: 1401
APNIC Region origin ASes announcing only one prefix: 459
APNIC Region transit ASes present in the Internet Routing Table: 237
Average APNIC Region AS path length visible: 5.2
Max APNIC Region AS path length visible: 15
Number of APNIC addresses announced to Internet: 88690242
Equivalent to 5 /8s, 73 /16s and 78 /24s
Percentage of available APNIC address space announced: 74.9
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: 73433
Prefixes being announced from the ARIN address blocks: 52244
ARIN Region origin ASes present in the Internet Routing Table: 7198
ARIN Region origin ASes announcing only one prefix: 2205
ARIN Region transit ASes present in the Internet Routing Table: 723
Average ARIN Region AS path length visible: 5.2
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 221156094
Equivalent to 13 /8s, 46 /16s and 146 /24s
Percentage of available ARIN address space announced: 82.4
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: 17795
Prefixes being announced from the RIPE address blocks: 14435
RIPE Region origin ASes present in the Internet Routing Table: 3446
RIPE Region origin ASes announcing only one prefix: 1836
RIPE Region transit ASes present in the Internet Routing Table: 607
Average RIPE Region AS path length visible: 5.9
Max RIPE Region AS path length visible: 15
Number of RIPE addresses announced to Internet: 110026988
Equivalent to 6 /8s, 142 /16s and 224 /24s
Percentage of available RIPE address space announced: 72.9
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 1536 1303 Telstra Pty Ltd
2764 413 380 connect.com.au pty ltd
703 382 343 UUNET Technologies, Inc.
2907 371 1848 SINET Japan
7474 298 275 Optus Communications Pty Ltd
4755 282 153 Videsh Sanchar Nigam Ltd. Aut
4134 255 1924 Data Communications Bureau
4766 184 1431 Korea Internet Exchange for "
4740 177 40 OzEmail ISP
17676 169 1958 XTAGE CORPORATION
9443 167 53 Primus Telecommunications
1659 165 1157 Taiwan Academic Network (TANe
17557 146 12 Pakistan Telecom
7539 144 129 TANet2, sponsored by NSC, TAI
4812 137 305 China Telecom (Group) - Shang
2521 136 171 PSINet Japan
9583 132 46 Satyam Infoway Ltd.,
4786 131 15 NetConnect Communications Pty
9768 127 362 Korea Telecom
7657 121 23 The Internet Group Limited
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv Description
702 1065 2129 UUNET Technologies, Inc.
3301 429 948 TeliaNet Sweden
1257 268 500 SWIPnet Swedish IP Network
3215 234 568 France Telecom / &Equant
680 231 2148 DFN-IP service G-WiN
5515 197 688 Sonera Finland Autonomous Sys
3320 196 1959 Deutsche Telekom AG
786 184 1890 The JANET IP Service
8708 169 17 Romania Data Systems S.A.
5400 137 62 Concert European Core Network
719 134 289 LANLINK autonomous system
2856 134 777 BTnet UK Regional network
3303 131 560 Swisscom Ltd
5549 122 82 Nextra Deutschland GmbH + Co.
517 112 248 KPNQwest Germany GmbH
1273 107 165 Cable & Wireless ECRC GmbH
12302 107 7 MobiFon S.A.
3269 105 808 TELECOM ITALIA
8297 101 31 Teleglobe Autonomous System i
1290 100 398 PSINet UK Ltd.
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv Description
701 2239 9179 UUNET Technologies, Inc.
7018 1083 7284 AT&T
3967 1053 483 Exodus Communication
1 845 8522 BBN Planet
7046 825 973 UUNET Technologies, Inc.
1239 723 3387 Sprint
8010 719 106 PublicNet Communications, Inc
3908 688 1532 Supernet, Inc.
209 589 2215 Qwest
4323 573 468 Time Warner Communications, I
852 540 697 Telus Advanced Communications
690 495 87 Merit Network
2914 482 2269 Verio, Inc.
2149 479 317 Performance Systems, Inc.
705 425 249 UUNET Technologies, Inc.
3549 390 887 Global Crossing
3561 386 2288 Cable & Wireless USA
4151 361 1254 USDA
3741 350 766 The Internet Solution
577 345 625 Bell Advanced Communications
Global Per AS prefix count summary
----------------------------------
ASN No of nets /20 equiv Description
701 2239 9179 UUNET Technologies, Inc.
1221 1536 1303 Telstra Pty Ltd
7018 1083 7284 AT&T
702 1065 2129 UUNET Technologies, Inc.
3967 1053 483 Exodus Communication
1 845 8522 BBN Planet
7046 825 973 UUNET Technologies, Inc.
1239 723 3387 Sprint
8010 719 106 PublicNet Communications, Inc
3908 688 1532 Supernet, Inc.
209 589 2215 Qwest
4323 573 468 Time Warner Communications, I
852 540 697 Telus Advanced Communications
690 495 87 Merit Network
2914 482 2269 Verio, Inc.
2149 479 317 Performance Systems, Inc.
3301 429 948 TeliaNet Sweden
705 425 249 UUNET Technologies, Inc.
2764 413 380 connect.com.au pty ltd
3549 390 887 Global Crossing
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
2027 UNALLOCATED 150.185.128.0/18 8143 Publicom Corp.
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
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 /11:12 /12:36
/13:89 /14:221 /15:386 /16:7064 /17:1355 /18:2438
/19:7058 /20:6023 /21:4700 /22:7089 /23:8898 /24:61035
/25:328 /26:316 /27:261 /28:228 /29:143 /30:184
/31:0 /32:61
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
701 1431 2239 UUNET Technologies, Inc.
1221 1394 1536 Telstra Pty Ltd
3967 871 1053 Exodus Communication
702 732 1065 UUNET Technologies, Inc.
8010 703 719 PublicNet Communications, Inc
7046 656 825 UUNET Technologies, Inc.
7018 559 1083 AT&T
4323 492 573 Time Warner Communications, I
690 491 495 Merit Network
3908 466 688 Supernet, Inc.
209 417 589 Qwest
1 408 845 BBN Planet
1239 403 723 Sprint
2764 366 413 connect.com.au pty ltd
852 360 540 Telus Advanced Communications
2149 359 479 Performance Systems, Inc.
705 334 425 UUNET Technologies, Inc.
4151 316 361 USDA
703 312 382 UUNET Technologies, Inc.
11371 272 279 Rhythms NetConnections
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:5 9:1 12:425 13:10 15:1 17:5
20:1 24:846 25:1 26:1 32:73 38:13
40:1 43:2 44:2 47:2 52:1 53:9
57:12 61:119 62:152 63:1900 64:1494 65:931
66:727 67:6 80:94 128:61 129:113 130:23
131:42 132:13 133:2 134:133 135:10 136:109
137:98 138:195 139:47 140:173 141:58 142:67
143:43 144:148 145:11 146:208 147:133 148:185
149:88 150:42 151:191 152:381 153:71 154:8
155:84 156:90 157:108 158:69 159:71 160:46
161:55 162:79 163:127 164:129 165:121 166:207
167:161 168:119 169:45 170:294 171:2 192:5357
193:2037 194:2057 195:843 196:454 198:3750 199:3430
200:2376 201:1 202:2790 203:4537 204:3344 205:2131
206:2671 207:2628 208:2757 209:2987 210:540 211:153
212:968 213:521 214:9 215:15 216:2939 217:440
218:6
End of report
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