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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 04 Dec, 2001
Analysis Summary
----------------
BGP routing table entries examined: 107553
Total ASes present in the Internet Routing Table: 12197
Origin-only ASes present in the Internet Routing Table: 10578
Origin ASes announcing only one prefix: 4558
Transit ASes present in the Internet Routing Table: 1619
Transit-only ASes present in the Internet Routing Table: 59
Average AS path length visible in the Internet Routing Table: 5.3
Max AS path length visible: 19
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: 17
Number of addresses announced to Internet: 1261549515
Equivalent to 75 /8s, 49 /16s and 183 /24s
Percentage of available address space announced: 34.0
Percentage of allocated address space announced: 65.0
Percentage of available address space allocated: 52.4
Total number of prefixes smaller than registry allocations: 72513
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 16912
Prefixes being announced from the APNIC address blocks: 15445
APNIC Region origin ASes present in the Internet Routing Table: 1412
APNIC Region origin ASes announcing only one prefix: 462
APNIC Region transit ASes present in the Internet Routing Table: 246
Average APNIC Region AS path length visible: 5.1
Max APNIC Region AS path length visible: 14
Number of APNIC addresses announced to Internet: 89513320
Equivalent to 5 /8s, 85 /16s and 221 /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: 72827
Prefixes being announced from the ARIN address blocks: 52176
ARIN Region origin ASes present in the Internet Routing Table: 7237
ARIN Region origin ASes announcing only one prefix: 2213
ARIN Region transit ASes present in the Internet Routing Table: 741
Average ARIN Region AS path length visible: 5.2
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 222213918
Equivalent to 13 /8s, 62 /16s and 183 /24s
Percentage of available ARIN address space announced: 82.8
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: 17807
Prefixes being announced from the RIPE address blocks: 14512
RIPE Region origin ASes present in the Internet Routing Table: 3491
RIPE Region origin ASes announcing only one prefix: 1883
RIPE Region transit ASes present in the Internet Routing Table: 618
Average RIPE Region AS path length visible: 5.9
Max RIPE Region AS path length visible: 19
Number of RIPE addresses announced to Internet: 111170996
Equivalent to 6 /8s, 160 /16s and 85 /24s
Percentage of available RIPE address space announced: 73.6
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 1533 1328 Telstra Pty Ltd
2764 395 356 connect.com.au pty ltd
703 383 338 UUNET Technologies, Inc.
2907 371 1863 SINET Japan
4755 306 159 Videsh Sanchar Nigam Ltd. Aut
7474 306 287 Optus Communications Pty Ltd
4134 257 1940 Data Communications Bureau
4766 183 1419 Korea Internet Exchange for "
4740 177 40 OzEmail ISP
9443 170 62 Primus Telecommunications
2521 168 172 PSINet Japan
17557 166 13 Pakistan Telecom
1659 164 1124 Taiwan Academic Network (TANe
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
4713 121 944 NTT Communications Corporatio
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv Description
702 1074 2761 UUNET Technologies, Inc.
3301 429 934 TeliaNet Sweden
1257 269 500 SWIPnet Swedish IP Network
3215 237 543 France Telecom / &Equant
680 232 2149 DFN-IP service G-WiN
5515 212 705 Sonera Finland Autonomous Sys
3320 188 1959 Deutsche Telekom AG
786 183 1874 The JANET IP Service
719 166 292 LANLINK autonomous system
8708 156 21 Romania Data Systems S.A.
5400 144 64 Concert European Core Network
3246 143 191 Song Networks / Clinet
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 108 7 MobiFon S.A.
3269 105 799 TELECOM ITALIA
1290 98 398 PSINet UK Ltd.
8297 98 31 Teleglobe Autonomous System i
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv Description
701 2166 9075 UUNET Technologies, Inc.
7018 1090 7363 AT&T
3967 1018 466 Exodus Communication
1 845 8518 BBN Planet
1239 749 3381 Sprint
7046 721 887 UUNET Technologies, Inc.
8010 719 106 PublicNet Communications, Inc
3908 700 1581 Supernet, Inc.
209 611 2233 Qwest
4323 586 477 Time Warner Communications, I
852 544 697 Telus Advanced Communications
690 504 88 Merit Network
2914 481 2253 Verio, Inc.
705 452 254 UUNET Technologies, Inc.
2149 432 234 Performance Systems, Inc.
3549 407 888 Global Crossing
3561 386 2278 Cable & Wireless USA
7132 386 534 Southwestern Bell Internet Se
4151 356 1286 USDA
3741 350 766 The Internet Solution
Global Per AS prefix count summary
----------------------------------
ASN No of nets /20 equiv Description
701 2166 9075 UUNET Technologies, Inc.
1221 1533 1328 Telstra Pty Ltd
7018 1090 7363 AT&T
702 1074 2761 UUNET Technologies, Inc.
3967 1018 466 Exodus Communication
1 845 8518 BBN Planet
1239 749 3381 Sprint
7046 721 887 UUNET Technologies, Inc.
8010 719 106 PublicNet Communications, Inc
3908 700 1581 Supernet, Inc.
209 611 2233 Qwest
4323 586 477 Time Warner Communications, I
852 544 697 Telus Advanced Communications
690 504 88 Merit Network
2914 481 2253 Verio, Inc.
705 452 254 UUNET Technologies, Inc.
2149 432 234 Performance Systems, Inc.
3301 429 934 TeliaNet Sweden
3549 407 888 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
68.1.0.0/17 22773 Cox Communications, Inc. Atla
68.1.128.0/18 22773 Cox Communications, Inc. Atla
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 /14:221 /15:386 /16:7080 /17:1362 /18:2453
/19:7101 /20:6151 /21:4686 /22:7064 /23:8824 /24:60543
/25:326 /26:319 /27:257 /28:232 /29:142 /30:175
/31:0 /32:63
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
1221 1387 1533 Telstra Pty Ltd
701 1385 2166 UUNET Technologies, Inc.
3967 836 1018 Exodus Communication
8010 703 719 PublicNet Communications, Inc
702 688 1074 UUNET Technologies, Inc.
7018 562 1090 AT&T
7046 558 721 UUNET Technologies, Inc.
690 500 504 Merit Network
4323 496 586 Time Warner Communications, I
3908 475 700 Supernet, Inc.
209 439 611 Qwest
1239 418 749 Sprint
1 415 845 BBN Planet
852 364 544 Telus Advanced Communications
705 358 452 UUNET Technologies, Inc.
2764 353 395 connect.com.au pty ltd
2149 326 432 Performance Systems, Inc.
703 310 383 UUNET Technologies, Inc.
4151 310 356 USDA
3549 277 407 Global Crossing
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:4 9:1 12:426 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
61:142 62:149 63:1919 64:1475 65:974 66:735
67:8 80:105 128:61 129:112 130:23 131:43
132:13 133:2 134:136 135:10 136:115 137:118
138:63 139:30 140:99 141:59 142:68 143:43
144:56 145:13 146:211 147:90 148:128 149:87
150:42 151:38 152:389 153:37 154:6 155:85
156:83 157:115 158:69 159:72 160:45 161:54
162:84 163:122 164:120 165:96 166:205 167:162
168:121 169:46 170:304 171:2 191:1 192:5366
193:2064 194:2077 195:837 196:425 198:3759 199:3335
200:2399 201:1 202:2853 203:4565 204:3306 205:2156
206:2606 207:2676 208:2719 209:2976 210:589 211:141
212:948 213:524 214:9 215:16 216:2966 217:421
218:7
End of report
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