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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 08:00 20 Nov, 2001
Analysis Summary
----------------
BGP routing table entries examined: 108069
Total ASes present in the Internet Routing Table: 12118
Origin-only ASes present in the Internet Routing Table: 10536
Origin ASes announcing only one prefix: 4520
Transit ASes present in the Internet Routing Table: 1582
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: 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: 1257785263
Equivalent to 74 /8s, 248 /16s and 71 /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: 73240
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 16923
Prefixes being announced from the APNIC address blocks: 15407
APNIC Region origin ASes present in the Internet Routing Table: 1401
APNIC Region origin ASes announcing only one prefix: 460
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: 16
Number of APNIC addresses announced to Internet: 88785986
Equivalent to 5 /8s, 74 /16s and 196 /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: 73392
Prefixes being announced from the ARIN address blocks: 52253
ARIN Region origin ASes present in the Internet Routing Table: 7210
ARIN Region origin ASes announcing only one prefix: 2214
ARIN Region transit ASes present in the Internet Routing Table: 725
Average ARIN Region AS path length visible: 5.2
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 221155294
Equivalent to 13 /8s, 46 /16s and 143 /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: 17748
Prefixes being announced from the RIPE address blocks: 14405
RIPE Region origin ASes present in the Internet Routing Table: 3453
RIPE Region origin ASes announcing only one prefix: 1846
RIPE Region transit ASes present in the Internet Routing Table: 610
Average RIPE Region AS path length visible: 5.9
Max RIPE Region AS path length visible: 15
Number of RIPE addresses announced to Internet: 110070284
Equivalent to 6 /8s, 143 /16s and 138 /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 1541 1305 Telstra Pty Ltd
2764 411 379 connect.com.au pty ltd
703 383 343 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 "
4740 179 41 OzEmail ISP
9443 169 53 Primus Telecommunications
17676 169 1958 XTAGE CORPORATION
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
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv Description
702 1065 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 100 31 Teleglobe Autonomous System i
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv Description
701 2228 9179 UUNET Technologies, Inc.
7018 1085 7316 AT&T
3967 1049 483 Exodus Communication
1 839 8519 BBN Planet
7046 734 936 UUNET Technologies, Inc.
1239 721 3387 Sprint
8010 719 106 PublicNet Communications, Inc
3908 686 1532 Supernet, Inc.
209 583 2215 Qwest
4323 571 467 Time Warner Communications, I
852 540 697 Telus Advanced Communications
690 495 87 Merit Network
2914 484 2270 Verio, Inc.
2149 475 317 Performance Systems, Inc.
705 428 249 UUNET Technologies, Inc.
3549 389 887 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 2228 9179 UUNET Technologies, Inc.
1221 1541 1305 Telstra Pty Ltd
7018 1085 7316 AT&T
702 1065 2145 UUNET Technologies, Inc.
3967 1049 483 Exodus Communication
1 839 8519 BBN Planet
7046 734 936 UUNET Technologies, Inc.
1239 721 3387 Sprint
8010 719 106 PublicNet Communications, Inc
3908 686 1532 Supernet, Inc.
209 583 2215 Qwest
4323 571 467 Time Warner Communications, I
852 540 697 Telus Advanced Communications
690 495 87 Merit Network
2914 484 2270 Verio, Inc.
2149 475 317 Performance Systems, Inc.
705 428 249 UUNET Technologies, Inc.
3301 428 948 TeliaNet Sweden
2764 411 379 connect.com.au pty ltd
3549 389 887 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 /16:7069 /17:1354 /18:2434
/19:7070 /20:6030 /21:4703 /22:7094 /23:8912 /24:61066
/25:333 /26:313 /27:269 /28:245 /29:156 /30:183
/31:0 /32:67
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
701 1427 2228 UUNET Technologies, Inc.
1221 1398 1541 Telstra Pty Ltd
3967 867 1049 Exodus Communication
702 731 1065 UUNET Technologies, Inc.
8010 703 719 PublicNet Communications, Inc
7046 566 734 UUNET Technologies, Inc.
7018 559 1085 AT&T
690 491 495 Merit Network
4323 490 571 Time Warner Communications, I
3908 464 686 Supernet, Inc.
209 413 583 Qwest
1 404 839 BBN Planet
1239 402 721 Sprint
2764 364 411 connect.com.au pty ltd
852 360 540 Telus Advanced Communications
2149 357 475 Performance Systems, Inc.
705 337 428 UUNET Technologies, Inc.
4151 321 366 USDA
703 313 383 UUNET Technologies, Inc.
4755 310 356 Videsh Sanchar Nigam Ltd. Aut
Number of /24s announced per /8 block (Global)
----------------------------------------------
9:1 12:424 13:10 15:1 17:5 20:1
24:849 25:1 26:1 32:72 38:13 40:1
43:2 44:2 47:2 52:1 53:9 57:12
61:121 62:153 63:1901 64:1494 65:939 66:728
67:6 80:94 128:61 129:114 130:23 131:43
132:13 133:2 134:134 135:10 136:119 137:98
138:125 139:47 140:174 141:58 142:67 143:43
144:149 145:11 146:210 147:133 148:186 149:87
150:42 151:191 152:382 153:70 154:8 155:84
156:91 157:108 158:69 159:71 160:43 161:51
162:79 163:129 164:126 165:122 166:204 167:161
168:122 169:45 170:298 171:2 192:5360 193:2039
194:2055 195:841 196:454 198:3751 199:3433 200:2391
201:1 202:2843 203:4572 204:3334 205:2130 206:2673
207:2654 208:2758 209:2997 210:548 211:147 212:945
213:520 214:9 215:15 216:2912 217:430 218:6
End of report
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