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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 +10GMT Sat 05 Jan, 2002
Analysis Summary
----------------
BGP routing table entries examined: 106723
Prefixes after maximum aggregation: 71497
Unique aggregates announced to Internet: 52024
Total ASes present in the Internet Routing Table: 12283
Origin-only ASes present in the Internet Routing Table: 10671
Origin ASes announcing only one prefix: 4622
Transit ASes present in the Internet Routing Table: 1612
Transit-only ASes present in the Internet Routing Table: 50
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: 15
Number of addresses announced to Internet: 1159504136
Equivalent to 69 /8s, 28 /16s and 161 /24s
Percentage of available address space announced: 31.3
Percentage of allocated address space announced: 59.2
Percentage of available address space allocated: 52.8
Total number of prefixes smaller than registry allocations: 71518
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 16530
Total APNIC prefixes after maximum aggregation: 10383
Prefixes being announced from the APNIC address blocks: 15160
Unique aggregates announced from the APNIC address blocks: 9754
APNIC Region origin ASes present in the Internet Routing Table: 1417
APNIC Region origin ASes announcing only one prefix: 457
APNIC Region transit ASes present in the Internet Routing Table: 245
Average APNIC Region AS path length visible: 5.3
Max APNIC Region AS path length visible: 14
Number of APNIC addresses announced to Internet: 78232256
Equivalent to 4 /8s, 169 /16s and 186 /24s
Percentage of available APNIC address space announced: 57.8
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: 72311
Total ARIN prefixes after maximum aggregation: 47204
Prefixes being announced from the ARIN address blocks: 52002
Unique aggregates announced from the ARIN address blocks: 16941
ARIN Region origin ASes present in the Internet Routing Table: 7279
ARIN Region origin ASes announcing only one prefix: 2259
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: 181967048
Equivalent to 10 /8s, 216 /16s and 152 /24s
Percentage of available ARIN address space announced: 67.8
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: 17875
Total RIPE prefixes after maximum aggregation: 13910
Prefixes being announced from the RIPE address blocks: 14585
Unique aggregates announced from the RIPE address blocks: 9730
RIPE Region origin ASes present in the Internet Routing Table: 3537
RIPE Region origin ASes announcing only one prefix: 1906
RIPE Region transit ASes present in the Internet Routing Table: 632
Average RIPE Region AS path length visible: 5.8
Max RIPE Region AS path length visible: 15
Number of RIPE addresses announced to Internet: 105374208
Equivalent to 6 /8s, 71 /16s and 226 /24s
Percentage of available RIPE address space announced: 69.8
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 MaxAgg Description
1221 1345 1259 987 Telstra Pty Ltd
703 402 348 309 UUNET Technologies, Inc.
2764 399 378 373 connect.com.au pty ltd
2907 390 1891 360 SINET Japan
7474 310 285 202 Optus Communications Pty Ltd
4755 275 99 78 Videsh Sanchar Nigam Ltd. Aut
4134 268 1874 98 Data Communications Bureau
4766 188 1380 138 Korea Internet Exchange for "
17557 176 14 87 Pakistan Telecom
9443 173 45 69 Primus Telecommunications
1659 165 924 34 Taiwan Academic Network (TANe
9583 158 32 5 Satyam Infoway Ltd.,
4740 149 34 123 OzEmail ISP
9768 145 381 88 Korea Telecom
4812 143 288 36 China Telecom (Group) - Shang
7657 126 22 85 The Internet Group Limited
17676 121 1920 7 XTAGE CORPORATION
4780 117 186 40 Digital United Inc.
4713 115 894 102 NTT Communications Corporatio
9800 112 194 21 CHINA UNICOM
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 1089 2653 856 UUNET Technologies, Inc.
3301 401 925 353 TeliaNet Sweden
1257 253 489 250 SWIPnet Swedish IP Network
680 233 2149 231 DFN-IP service G-WiN
3215 232 562 151 France Telecom / &Equant
5515 216 705 176 Sonera Finland Autonomous Sys
3320 202 1961 170 Deutsche Telekom AG
786 182 1874 182 The JANET IP Service
719 164 289 118 LANLINK autonomous system
5400 148 60 85 Concert European Core Network
8708 146 20 138 Romania Data Systems S.A.
5549 141 78 63 Nextra Deutschland GmbH + Co.
2856 136 777 125 BTnet UK Regional network
3303 134 575 124 Swisscom Ltd
3269 115 663 70 TELECOM ITALIA
12302 111 7 35 MobiFon S.A.
517 108 230 106 KPNQwest Germany GmbH
8297 108 31 62 Teleglobe Autonomous System i
1290 97 412 72 PSINet UK Ltd.
5511 95 192 79 France Telecom
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
701 2142 8788 1524 UUNET Technologies, Inc.
7018 1124 7412 875 AT&T
3967 902 359 427 Exodus Communication
1 869 8408 645 BBN Planet
3908 775 1638 477 Supernet, Inc.
1239 769 3181 599 Sprint
8010 714 62 11 PublicNet Communications, Inc
7046 687 822 439 UUNET Technologies, Inc.
4323 585 364 201 Time Warner Communications, I
852 580 978 384 Telus Advanced Communications
690 533 76 318 Merit Network
209 512 1861 296 Qwest
705 472 349 296 UUNET Technologies, Inc.
2914 459 2210 430 Verio, Inc.
3549 402 836 200 Global Crossing
7132 402 470 168 Southwestern Bell Internet Se
2149 398 230 335 Performance Systems, Inc.
3561 378 2253 328 Cable & Wireless USA
4151 363 704 16 USDA
577 352 588 220 Bell Advanced Communications
Global Per AS Maximum Aggr summary
----------------------------------
ASN Net Savings Description
8010 703 PublicNet Communications, Inc
3967 475 Exodus Communication
4323 384 Time Warner Communications, I
1221 358 Telstra Pty Ltd
4151 347 USDA
3908 298 Supernet, Inc.
11371 271 Rhythms NetConnections
7018 249 AT&T
7046 248 UUNET Technologies, Inc.
6347 237 SAVVIS Communications Corpora
7132 234 Southwestern Bell Internet Se
702 233 UUNET Technologies, Inc.
1 224 BBN Planet
209 216 Qwest
690 215 Merit Network
3549 202 Global Crossing
4355 199 EarthLink, Inc.
4755 197 Videsh Sanchar Nigam Ltd. Aut
852 196 Telus Advanced Communications
6517 196 Yipes Communications, Inc.
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
2027 UNALLOCATED 150.185.128.0/18 8143 Publicom Corp.
65021 PRIVATE 203.75.135.0/27 3462 Data Communication B
65021 PRIVATE 203.75.210.129/32 3462 Data Communication B
65021 PRIVATE 203.75.210.130/32 3462 Data Communication B
65021 PRIVATE 203.75.210.131/32 3462 Data Communication B
65021 PRIVATE 203.75.210.132/32 3462 Data Communication B
65021 PRIVATE 203.75.232.0/27 3462 Data Communication B
65021 PRIVATE 203.75.232.160/27 3462 Data Communication B
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
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 /9:6 /10:7 /11:12 /12:38
/13:92 /14:231 /15:392 /16:7059 /17:1368 /18:2468
/19:7189 /20:6303 /21:4737 /22:7141 /23:8850 /24:59916
/25:234 /26:240 /27:147 /28:94 /29:79 /30:77
/31:0 /32:25
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
701 1368 2142 UUNET Technologies, Inc.
1221 1199 1345 Telstra Pty Ltd
3967 719 902 Exodus Communication
702 707 1089 UUNET Technologies, Inc.
8010 698 714 PublicNet Communications, Inc
7018 588 1124 AT&T
3908 533 775 Supernet, Inc.
690 530 533 Merit Network
7046 521 687 UUNET Technologies, Inc.
4323 495 585 Time Warner Communications, I
1239 446 769 Sprint
1 443 869 BBN Planet
852 369 580 Telus Advanced Communications
705 356 472 UUNET Technologies, Inc.
2764 353 399 connect.com.au pty ltd
209 338 512 Qwest
703 326 402 UUNET Technologies, Inc.
4151 316 363 USDA
2149 300 398 Performance Systems, Inc.
7474 275 310 Optus Communications Pty Ltd
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:3 9:1 12:446 13:10 15:2 17:5
20:1 24:777 25:1 32:73 38:13 40:4
43:1 44:2 52:1 53:2 57:13 61:208
62:162 63:1913 64:1477 65:970 66:749 67:23
68:10 80:144 128:62 129:110 130:25 131:41
132:14 133:2 134:107 135:10 136:46 137:108
138:62 139:30 140:102 141:57 142:53 143:43
144:57 145:12 146:200 147:94 148:155 149:88
150:39 151:37 152:379 153:34 154:6 155:81
156:83 157:121 158:70 159:78 160:26 161:54
162:85 163:121 164:119 165:103 166:204 167:160
168:114 169:47 170:288 171:2 191:1 192:5323
193:2057 194:2059 195:851 196:422 198:3702 199:3306
200:2408 201:1 202:2836 203:4474 204:3257 205:2178
206:2590 207:2647 208:2592 209:2976 210:537 211:152
212:881 213:549 214:9 215:17 216:2940 217:399
218:12
End of report
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