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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 09 Dec, 2001
Analysis Summary
----------------
BGP routing table entries examined: 107483
Total ASes present in the Internet Routing Table: 12228
Origin-only ASes present in the Internet Routing Table: 10616
Origin ASes announcing only one prefix: 4578
Transit ASes present in the Internet Routing Table: 1612
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: 20
Illegal AS announcements present in the Routing Table: 11
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: 1261858608
Equivalent to 75 /8s, 54 /16s and 111 /24s
Percentage of available address space announced: 34.0
Percentage of allocated address space announced: 64.4
Percentage of available address space allocated: 52.8
Total number of prefixes smaller than registry allocations: 72389
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 16925
Prefixes being announced from the APNIC address blocks: 15437
APNIC Region origin ASes present in the Internet Routing Table: 1410
APNIC Region origin ASes announcing only one prefix: 458
APNIC Region transit ASes present in the Internet Routing Table: 243
Average APNIC Region AS path length visible: 5.2
Max APNIC Region AS path length visible: 14
Number of APNIC addresses announced to Internet: 89759296
Equivalent to 5 /8s, 89 /16s and 158 /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: 72862
Prefixes being announced from the ARIN address blocks: 52299
ARIN Region origin ASes present in the Internet Routing Table: 7259
ARIN Region origin ASes announcing only one prefix: 2226
ARIN Region transit ASes present in the Internet Routing Table: 735
Average ARIN Region AS path length visible: 5.2
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 223393598
Equivalent to 13 /8s, 80 /16s and 183 /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: 17689
Prefixes being announced from the RIPE address blocks: 14400
RIPE Region origin ASes present in the Internet Routing Table: 3504
RIPE Region origin ASes announcing only one prefix: 1894
RIPE Region transit ASes present in the Internet Routing Table: 622
Average RIPE Region AS path length visible: 5.9
Max RIPE Region AS path length visible: 20
Number of RIPE addresses announced to Internet: 111273796
Equivalent to 6 /8s, 161 /16s and 231 /24s
Percentage of available RIPE address space announced: 73.7
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 1523 1328 Telstra Pty Ltd
2764 391 356 connect.com.au pty ltd
703 384 337 UUNET Technologies, Inc.
2907 369 1831 SINET Japan
4755 306 159 Videsh Sanchar Nigam Ltd. Aut
7474 306 287 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 174 40 OzEmail ISP
9443 169 61 Primus Telecommunications
17557 162 13 Pakistan Telecom
2521 161 171 PSINet Japan
9583 151 48 Satyam Infoway Ltd.,
7539 138 134 TANet2, sponsored by NSC, TAI
4812 137 305 China Telecom (Group) - Shang
9768 127 362 Korea Telecom
17676 125 1952 XTAGE CORPORATION
4786 123 14 NetConnect Communications Pty
4713 120 936 NTT Communications Corporatio
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv Description
702 1086 2739 UUNET Technologies, Inc.
3301 430 934 TeliaNet Sweden
1257 268 500 SWIPnet Swedish IP Network
3215 237 545 France Telecom / &Equant
680 232 2149 DFN-IP service G-WiN
5515 212 705 Sonera Finland Autonomous Sys
3320 185 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 65 Concert European Core Network
3303 134 577 Swisscom Ltd
2856 131 777 BTnet UK Regional network
5549 121 82 Nextra Deutschland GmbH + Co.
517 111 248 KPNQwest Germany GmbH
12302 110 7 MobiFon S.A.
3269 106 793 TELECOM ITALIA
8297 102 31 Teleglobe Autonomous System i
1290 96 396 PSINet UK Ltd.
5511 93 192 France Telecom
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv Description
701 2188 9044 UUNET Technologies, Inc.
7018 1095 7370 AT&T
3967 991 466 Exodus Communication
1 850 8503 BBN Planet
1239 773 3420 Sprint
7046 729 876 UUNET Technologies, Inc.
8010 719 106 PublicNet Communications, Inc
3908 702 1581 Supernet, Inc.
209 612 2248 Qwest
4323 585 477 Time Warner Communications, I
852 553 726 Telus Advanced Communications
690 511 89 Merit Network
2914 478 2253 Verio, Inc.
705 459 277 UUNET Technologies, Inc.
2149 423 248 Performance Systems, Inc.
3549 408 888 Global Crossing
3561 386 2278 Cable & Wireless USA
7132 386 534 Southwestern Bell Internet Se
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 2188 9044 UUNET Technologies, Inc.
1221 1523 1328 Telstra Pty Ltd
7018 1095 7370 AT&T
702 1086 2739 UUNET Technologies, Inc.
3967 991 466 Exodus Communication
1 850 8503 BBN Planet
1239 773 3420 Sprint
7046 729 876 UUNET Technologies, Inc.
8010 719 106 PublicNet Communications, Inc
3908 702 1581 Supernet, Inc.
209 612 2248 Qwest
4323 585 477 Time Warner Communications, I
852 553 726 Telus Advanced Communications
690 511 89 Merit Network
2914 478 2253 Verio, Inc.
705 459 277 UUNET Technologies, Inc.
3301 430 934 TeliaNet Sweden
2149 423 248 Performance Systems, Inc.
3549 408 888 Global Crossing
2764 391 356 connect.com.au pty ltd
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
22518 UNALLOCATED 65.206.168.0/24 701 UUNET Technologies,
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
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 /8:18 /9:5 /10:7 /11:12 /12:37
/13:89 /14:222 /15:389 /16:7067 /17:1361 /18:2461
/19:7129 /20:6201 /21:4665 /22:7104 /23:8838 /24:60429
/25:316 /26:313 /27:239 /28:209 /29:124 /30:184
/31:0 /32:64
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
701 1404 2188 UUNET Technologies, Inc.
1221 1377 1523 Telstra Pty Ltd
3967 809 991 Exodus Communication
702 705 1086 UUNET Technologies, Inc.
8010 703 719 PublicNet Communications, Inc
7046 569 729 UUNET Technologies, Inc.
7018 563 1095 AT&T
690 507 511 Merit Network
4323 495 585 Time Warner Communications, I
3908 480 702 Supernet, Inc.
1239 440 773 Sprint
209 439 612 Qwest
1 422 850 BBN Planet
852 367 553 Telus Advanced Communications
705 355 459 UUNET Technologies, Inc.
2764 349 391 connect.com.au pty ltd
2149 323 423 Performance Systems, Inc.
703 311 384 UUNET Technologies, Inc.
4151 298 344 USDA
3549 278 408 Global Crossing
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:4 9:1 12:433 13:10 15:1 17:5
20:1 24:861 25:1 26:1 32:73 38:13
43:1 44:1 52:1 53:2 57:12 61:155
62:148 63:1919 64:1500 65:994 66:750 67:8
68:1 80:111 128:61 129:114 130:23 131:40
132:15 133:2 134:133 135:10 136:121 137:110
138:63 139:30 140:102 141:59 142:69 143:44
144:52 145:12 146:215 147:91 148:130 149:86
150:42 151:38 152:393 153:37 154:6 155:71
156:84 157:113 158:69 159:75 160:45 161:54
162:85 163:128 164:117 165:97 166:205 167:162
168:121 169:47 170:300 171:2 191:1 192:5331
193:2065 194:2044 195:813 196:434 198:3757 199:3324
200:2414 201:1 202:2851 203:4572 204:3314 205:2148
206:2598 207:2684 208:2702 209:2936 210:580 211:145
212:904 213:530 214:9 215:15 216:2958 217:411
218:8
End of report
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