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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 20 Nov, 2001
Analysis Summary
----------------
BGP routing table entries examined: 107907
Total ASes present in the Internet Routing Table: 12113
Origin-only ASes present in the Internet Routing Table: 10536
Origin ASes announcing only one prefix: 4527
Transit ASes present in the Internet Routing Table: 1577
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: 9
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: 1253220201
Equivalent to 74 /8s, 178 /16s and 159 /24s
Percentage of available address space announced: 33.8
Percentage of allocated address space announced: 64.5
Percentage of available address space allocated: 52.4
Total number of prefixes smaller than registry allocations: 73156
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 16736
Prefixes being announced from the APNIC address blocks: 15234
APNIC Region origin ASes present in the Internet Routing Table: 1403
APNIC Region origin ASes announcing only one prefix: 461
APNIC Region transit ASes present in the Internet Routing Table: 235
Average APNIC Region AS path length visible: 5.2
Max APNIC Region AS path length visible: 16
Number of APNIC addresses announced to Internet: 84540698
Equivalent to 5 /8s, 9 /16s and 253 /24s
Percentage of available APNIC address space announced: 71.3
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: 73396
Prefixes being announced from the ARIN address blocks: 52263
ARIN Region origin ASes present in the Internet Routing Table: 7201
ARIN Region origin ASes announcing only one prefix: 2215
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: 221137662
Equivalent to 13 /8s, 46 /16s and 74 /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: 17769
Prefixes being announced from the RIPE address blocks: 14427
RIPE Region origin ASes present in the Internet Routing Table: 3456
RIPE Region origin ASes announcing only one prefix: 1851
RIPE Region transit ASes present in the Internet Routing Table: 609
Average RIPE Region AS path length visible: 5.9
Max RIPE Region AS path length visible: 15
Number of RIPE addresses announced to Internet: 110064396
Equivalent to 6 /8s, 143 /16s and 115 /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 1542 1305 Telstra Pty Ltd
2764 411 379 connect.com.au pty ltd
703 373 341 UUNET Technologies, Inc.
2907 371 1848 SINET Japan
4755 356 168 Videsh Sanchar Nigam Ltd. Aut
7474 299 275 Optus Communications Pty Ltd
4134 254 1924 Data Communications Bureau
4766 184 1431 Korea Internet Exchange for "
9443 169 53 Primus Telecommunications
1659 165 1157 Taiwan Academic Network (TANe
17557 154 12 Pakistan Telecom
7539 143 121 TANet2, sponsored by NSC, TAI
2521 139 171 PSINet Japan
4812 137 305 China Telecom (Group) - Shang
9583 137 47 Satyam Infoway Ltd.,
4786 131 15 NetConnect Communications Pty
9768 127 362 Korea Telecom
7657 120 23 The Internet Group Limited
4713 118 901 NTT Communications Corporatio
17561 116 167 Internet service provision to
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv Description
702 1066 2145 UUNET Technologies, Inc.
3301 428 948 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 192 1959 Deutsche Telekom AG
786 184 1890 The JANET IP Service
8708 169 17 Romania Data Systems S.A.
5400 136 62 Concert European Core Network
2856 135 778 BTnet UK Regional network
719 134 289 LANLINK autonomous system
3303 131 560 Swisscom Ltd
5549 121 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 106 809 TELECOM ITALIA
1290 100 398 PSINet UK Ltd.
8297 99 31 Teleglobe Autonomous System i
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv Description
701 2235 9180 UUNET Technologies, Inc.
7018 1085 7316 AT&T
3967 1051 483 Exodus Communication
1 843 8519 BBN Planet
7046 752 952 UUNET Technologies, Inc.
1239 723 3387 Sprint
8010 719 106 PublicNet Communications, Inc
3908 688 1532 Supernet, Inc.
209 585 2215 Qwest
4323 573 467 Time Warner Communications, I
852 540 697 Telus Advanced Communications
690 495 87 Merit Network
2914 482 2269 Verio, Inc.
2149 480 317 Performance Systems, Inc.
705 428 249 UUNET Technologies, Inc.
3549 388 887 Global Crossing
3561 386 2288 Cable & Wireless USA
7132 385 532 Southwestern Bell Internet Se
4151 366 1254 USDA
3741 350 766 The Internet Solution
Global Per AS prefix count summary
----------------------------------
ASN No of nets /20 equiv Description
701 2235 9180 UUNET Technologies, Inc.
1221 1542 1305 Telstra Pty Ltd
7018 1085 7316 AT&T
702 1066 2145 UUNET Technologies, Inc.
3967 1051 483 Exodus Communication
1 843 8519 BBN Planet
7046 752 952 UUNET Technologies, Inc.
1239 723 3387 Sprint
8010 719 106 PublicNet Communications, Inc
3908 688 1532 Supernet, Inc.
209 585 2215 Qwest
4323 573 467 Time Warner Communications, I
852 540 697 Telus Advanced Communications
690 495 87 Merit Network
2914 482 2269 Verio, Inc.
2149 480 317 Performance Systems, Inc.
705 428 249 UUNET Technologies, Inc.
3301 428 948 TeliaNet Sweden
2764 411 379 connect.com.au pty ltd
3549 388 887 Global Crossing
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
2027 UNALLOCATED 150.185.128.0/18 8143 Publicom Corp.
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
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
/13:88 /14:220 /15:385 /16:7000 /17:1354 /18:2433
/19:7069 /20:6032 /21:4704 /22:7091 /23:8903 /24:60985
/25:330 /26:314 /27:269 /28:245 /29:155 /30:183
/31:0 /32:69
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
701 1431 2235 UUNET Technologies, Inc.
1221 1399 1542 Telstra Pty Ltd
3967 869 1051 Exodus Communication
702 732 1066 UUNET Technologies, Inc.
8010 703 719 PublicNet Communications, Inc
7046 584 752 UUNET Technologies, Inc.
7018 559 1085 AT&T
4323 492 573 Time Warner Communications, I
690 491 495 Merit Network
3908 466 688 Supernet, Inc.
209 415 585 Qwest
1 408 843 BBN Planet
1239 403 723 Sprint
2764 364 411 connect.com.au pty ltd
852 360 540 Telus Advanced Communications
2149 359 480 Performance Systems, Inc.
705 337 428 UUNET Technologies, Inc.
4151 321 366 USDA
4755 310 356 Videsh Sanchar Nigam Ltd. Aut
703 303 373 UUNET Technologies, Inc.
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:5 9:1 12:426 13:10 15:1 17:5
20:1 24:866 25:1 26:1 32:73 38:13
40:1 43:2 44:2 47:2 52:1 53:9
57:12 61:121 62:153 63:1899 64:1494 65:932
66:729 67:6 80:94 128:61 129:114 130:23
131:42 132:13 133:2 134:134 135:10 136:119
137:98 138:125 139:46 140:174 141:58 142:67
143:43 144:149 145:11 146:210 147:133 148:185
149:87 150:42 151:191 152:381 153:71 154:8
155:84 156:91 157:108 158:68 159:71 160:43
161:51 162:79 163:129 164:126 165:122 166:207
167:161 168:115 169:45 170:298 171:2 192:5359
193:2040 194:2059 195:840 196:446 198:3747 199:3426
200:2392 201:1 202:2843 203:4490 204:3342 205:2129
206:2674 207:2632 208:2758 209:2998 210:544 211:147
212:959 213:520 214:9 215:15 216:2923 217:429
218:6
End of report
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