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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Wed 14 Jan, 2004
Analysis Summary
----------------
BGP routing table entries examined: 131413
Prefixes after maximum aggregation: 80971
Unique aggregates announced to Internet: 63418
Total ASes present in the Internet Routing Table: 16449
Origin-only ASes present in the Internet Routing Table: 14277
Origin ASes announcing only one prefix: 6567
Transit ASes present in the Internet Routing Table: 2172
Transit-only ASes present in the Internet Routing Table: 73
Average AS path length visible in the Internet Routing Table: 4.9
Max AS path length visible: 30
Illegal AS announcements present in the Routing Table: 7
Non-routable prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 14
Number of addresses announced to Internet: 1277354660
Equivalent to 76 /8s, 34 /16s and 226 /24s
Percentage of available address space announced: 34.5
Percentage of allocated address space announced: 60.1
Percentage of available address space allocated: 57.3
Total number of prefixes smaller than registry allocations: 57897
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 24280
Total APNIC prefixes after maximum aggregation: 13067
Prefixes being announced from the APNIC address blocks: 22761
Unique aggregates announced from the APNIC address blocks: 12918
APNIC Region origin ASes present in the Internet Routing Table: 1971
APNIC Region origin ASes announcing only one prefix: 579
APNIC Region transit ASes present in the Internet Routing Table: 310
Average APNIC Region AS path length visible: 4.9
Max APNIC Region AS path length visible: 16
Number of APNIC addresses announced to Internet: 134089856
Equivalent to 7 /8s, 254 /16s and 12 /24s
Percentage of available APNIC address space announced: 72.2
APNIC AS Blocks 4608 - 4864, 7467 - 7722, 9216 - 10239
17408 - 18431, 23552 - 24575
APNIC Address Blocks 60/7, 202/7, 210/7, 218/7, 220/7 and 222/8
ARIN Region Analysis Summary
----------------------------
Prefixes being announced by ARIN Region ASes: 77155
Total ARIN prefixes after maximum aggregation: 47873
Prefixes being announced from the ARIN address blocks: 59705
Unique aggregates announced from the ARIN address blocks: 20812
ARIN Region origin ASes present in the Internet Routing Table: 8839
ARIN Region origin ASes announcing only one prefix: 3110
ARIN Region transit ASes present in the Internet Routing Table: 842
Average ARIN Region AS path length visible: 4.6
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 213969376
Equivalent to 12 /8s, 192 /16s and 233 /24s
Percentage of available ARIN address space announced: 75.0
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
25600 - 26591, 26624 - 27647, 29695 - 30719
31744 - 32767
ARIN Address Blocks 24/8, 63/8, 64/6, 68/7, 198/7, 204/6, 208/7
and 216/8
RIPE Region Analysis Summary
----------------------------
Prefixes being announced by RIPE Region ASes: 23439
Total RIPE prefixes after maximum aggregation: 17153
Prefixes being announced from the RIPE address blocks: 20281
Unique aggregates announced from the RIPE address blocks: 13493
RIPE Region origin ASes present in the Internet Routing Table: 5108
RIPE Region origin ASes announcing only one prefix: 2744
RIPE Region transit ASes present in the Internet Routing Table: 900
Average RIPE Region AS path length visible: 5.6
Max RIPE Region AS path length visible: 30
Number of RIPE addresses announced to Internet: 148801920
Equivalent to 8 /8s, 222 /16s and 137 /24s
Percentage of available RIPE address space announced: 68.2
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, 24576 - 25599, 28672 - 29695
30720 - 31743
RIPE Address Blocks 62/8, 80/6, 84/8, 188/8, 193/8, 194/7,
212/7 and 217/8
LACNIC Region Analysis Summary
------------------------------
Prefixes being announced by LACNIC Region ASes: 5388
Total LACNIC prefixes after maximum aggregation: 2203
Prefixes being announced from the LACNIC address blocks: 4986
Unique aggregates announced from the LACNIC address blocks: 3124
LACNIC Region origin ASes present in the Internet Routing Table: 367
LACNIC Region origin ASes announcing only one prefix: 107
LACNIC Region transit ASes present in the Internet Routing Table: 71
Average LACNIC Region AS path length visible: 5.2
Max LACNIC Region AS path length visible: 12
Number of LACNIC addresses announced to Internet: 13918208
Equivalent to 0 /8s, 212 /16s and 96 /24s
Percentage of available LACNIC address space announced: 41.5
LACNIC AS Blocks 26592 - 26623, 27648 - 28671
LACNIC Address Blocks 200/7
Emerging AfriNIC Region Analysis Summary
----------------------------------------
Prefixes being announced by AfriNIC Region ASes: 1146
Total AfriNIC prefixes after maximum aggregation: 675
Prefixes being announced from the AfriNIC address blocks: 735
Unique aggregates announced from the AfriNIC address blocks: 567
AfriNIC Region origin ASes present in the Internet Routing Table: 92
AfriNIC Region origin ASes announcing only one prefix: 27
AfriNIC Region transit ASes present in the Internet Routing Table: 12
Average AfriNIC Region AS path length visible: 5.0
Max AfriNIC Region AS path length visible: 15
Number of AfriNIC addresses announced to Internet: 1758208
Equivalent to 0 /8s, 26 /16s and 212 /24s
Percentage of available AfriNIC address space announced: 10.5
AfriNIC AS Blocks <none>
AfriNIC Address Blocks 196/8
APNIC Region per AS prefix count summary
----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
1221 905 1098 651 Telstra Pty Ltd
4134 693 2413 110 Data Communications Bureau
4766 403 2904 239 Korea Internet Exchange for "
2907 362 1847 339 SINET Japan
9443 344 69 79 Primus Telecommunications
703 339 372 263 UUNET
17557 310 22 151 Pakistan Telecom
17676 292 4300 38 XTAGE CORPORATION
2764 287 289 236 connect.com.au pty ltd
7474 270 305 213 Optus Communications Pty Ltd
4538 249 1811 21 China Education and Research
4755 222 130 58 Videsh Sanchar Nigam Ltd. Aut
9942 217 69 128 COMindico Australia
9583 215 44 12 Satyam Infoway Ltd.,
9929 215 154 28 China Netcom Corp.
9800 214 347 55 CHINA UNICOM
9498 181 30 33 BHARTI BT INTERNET LTD.
17642 153 40 112 RequestDSL BGP AS# for Sydney
17964 152 117 58 Beijing Dian-Xin-Tong Network
3786 148 752 130 DACOM Corporation
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
7018 1412 7048 975 AT&T
701 1401 8678 968 UUNET Technologies, Inc.
1239 946 3089 662 Sprint
6197 776 483 251 BellSouth Network Solutions,
209 727 3530 507 Qwest
3356 721 10862 584 Level 3 Communications, LLC
18566 681 176 8 Covad Communications
4323 674 589 202 Time Warner Communications, I
20115 579 324 332 Charter Communications
6198 545 340 195 BellSouth Network Solutions,
7843 510 539 127 Adelphia Corp.
852 505 1124 401 Telus Advanced Communications
7066 502 207 270 Virginia Polytechnic Institut
7132 462 7402 311 Southwestern Bell Internet Se
2386 418 544 219 AT&T Data Communications Serv
19029 404 171 258 New Edge Networks
690 398 58 268 Merit Network
4355 390 323 101 EarthLink, Inc.
27364 381 28 24 Armstrong Cable Services
705 380 196 235 UUNET Technologies, Inc.
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 691 2076 574 UUNET - Commercial IP service
3301 334 1159 315 TeliaNet Sweden
3320 283 1972 233 Deutsche Telekom AG
8220 268 410 253 COLT Internet - International
1257 244 505 190 SWIPnet Swedish IP Network
680 241 2027 237 DFN-IP service G-WiN
13083 215 51 8 Mannesmann Datenverarbeitung
3246 189 425 187 Song Networks
786 175 1826 175 The JANET IP Service
5515 172 762 134 Sonera Solution Autonomous Sy
25186 168 201 109 France Telecom Transpac's Tra
8708 165 111 157 Romania Data Systems S.A.
3215 150 786 68 France Telecom Transpac
3303 138 557 138 Swisscom Ltd
5400 135 224 125 BT Ignite European Backbone
719 134 288 104 LANLINK autonomous system
12302 126 18 33 MobiFon S.A.
2856 119 1294 109 BTnet UK Regional network
3269 118 940 63 TELECOM ITALIA
3352 103 892 30 Ibernet, Internet Access Netw
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
6140 350 120 69 ImpSat
8151 238 336 123 UniNet S.A. de C.V.
11172 198 77 44 Servicios Alestra S.A de C.V
16814 155 10 5 NSS, S.A.
7303 139 52 19 Telecom Argentina Stet-France
6505 132 90 92 Global One Communicaoes Ltda
6503 126 220 93 AVANTEL, S.A.
6147 121 78 20 Telefonica Del Peru
11340 108 3 29 Red Universitaria Nacional
15311 78 18 38 Telefonica Empresas
6535 77 5 19 Chilesat Servicios Empresari
11992 76 25 32 Integrated Systems
4270 71 18 9 Red de Interconexion Universi
11311 66 7 22 Sinectis S.A.
7080 64 4 1 Electronica y Comunicaciones
27699 62 168 15 TELECOMUNICACOES DE SAO PAULO
7738 60 218 13 Telecomunicacoes da Bahia S.A
14420 60 4 22 ANDINATEL S.A.
1916 59 247 39 Fundacao de Amparo a Pesquisa
5639 58 7 8 Telecommunications Services o
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
3741 249 632 218 The Internet Solution
5536 103 8 3 Internet Egypt Network
2018 94 297 92 Tertiary Education Network
2905 90 272 80 The Internetworking Company o
2561 58 6 3 Egyptian Universities Network
11845 36 9 11 Data Pro Business Online
3208 33 2 1 ARN Network
16637 26 9 19 Johnnic e-Ventures
9129 25 3 4 UUNET Kenya
5713 24 93 22 Telkom SA Ltd
24835 23 18 6 RAYA Telecom - Egypt
6713 22 38 9 Itissalat Al-MAGHRIB
12455 22 4 2 Jambonet Autonomous system
8524 18 2 4 AUCEGYPT Autonomous System
10798 18 1 12 Standard Bank of South Africa
12258 15 3 10 Vodacom Internet Company
15706 15 2 5 Sudatel Internet Exchange Aut
17148 14 1 8 First National Bank
8346 12 6 12 SONATEL-AS Autonomous System
2609 11 10 3 Tunisia BackBone AS
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
18566 681 673 Covad Communications
4134 693 583 Data Communications Bureau
6197 776 525 BellSouth Network Solutions,
4323 674 472 Time Warner Communications, I
701 1401 433 UUNET Technologies, Inc.
7843 510 383 Adelphia Corp.
27364 381 357 Armstrong Cable Services
6198 545 350 BellSouth Network Solutions,
22909 328 311 Comcast Cable Corporation
5668 321 305 Century Telephone
22773 330 301 Cox Communications, Inc. Atla
4355 390 289 EarthLink, Inc.
1239 946 284 Sprint
6140 350 281 ImpSat
9443 344 265 Primus Telecommunications
1221 905 254 Telstra Pty Ltd
6347 331 254 SAVVIS Communications Corpora
17676 292 254 XTAGE CORPORATION
20115 579 247 Charter Communications
376 357 243 Reseau Interordinateurs Scien
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
64512 PRIVATE 131.95.1.240/28 16430 University of Southe
64198 RESERVED 192.107.195.0/24 22767 NASA Earth Science D
1877 UNALLOCATED 192.108.199.0/24 1876 Southern Methodist U
64198 RESERVED 198.10.49.0/24 22767 NASA Earth Science D
64512 PRIVATE 204.70.1.0/24 3561 Cable & Wireless USA
23861 UNALLOCATED 210.93.46.0/24 4766 Korea Internet Excha
23861 UNALLOCATED 210.93.47.0/24 4766 Korea Internet Excha
Advertised Unallocated Addresses
--------------------------------
Network Origin AS Description
132.0.0.0/10 568 DISO-UNRRA
137.0.0.0/13 568 DISO-UNRRA
158.0.0.0/13 568 DISO-UNRRA
192.43.230.0/24 4738 South Australian Academic Res
192.44.0.0/19 702 UUNET - Commercial IP service
192.83.16.0/20 5515 Sonera Solution Autonomous Sy
192.83.32.0/19 5515 Sonera Solution Autonomous Sy
192.83.96.0/22 5515 Sonera Solution Autonomous Sy
192.83.100.0/24 5515 Sonera Solution Autonomous Sy
192.84.205.0/24 719 LANLINK autonomous system
192.119.135.0/24 270 NASA
192.135.50.0/24 7018 AT&T
192.136.79.0/24 719 LANLINK autonomous system
192.172.0.0/19 568 DISO-UNRRA
Number of prefixes announced per prefix length (Global)
-------------------------------------------------------
/1:0 /2:0 /3:0 /4:0 /5:0 /6:0
/7:0 /8:19 /9:4 /10:6 /11:15 /12:57
/13:104 /14:281 /15:497 /16:7533 /17:1832 /18:3427
/19:8884 /20:9324 /21:6708 /22:9436 /23:10999 /24:71632
/25:183 /26:238 /27:141 /28:31 /29:5 /30:45
/31:0 /32:12
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
18566 665 681 Covad Communications
6197 620 776 BellSouth Network Solutions,
7018 528 1412 AT&T
701 422 1401 UUNET Technologies, Inc.
702 421 691 UUNET - Commercial IP service
6198 401 545 BellSouth Network Solutions,
7066 396 502 Virginia Polytechnic Institut
27364 375 381 Armstrong Cable Services
3356 366 721 Level 3 Communications, LLC
690 361 398 Merit Network
20115 360 579 Charter Communications
1239 332 946 Sprint
5668 284 321 Century Telephone
19029 264 404 New Edge Networks
25844 244 244 Skadden, Arps, Slate, Meagher
4766 231 403 Korea Internet Exchange for "
3320 230 283 Deutsche Telekom AG
6386 225 251 bellsouth.net, inc.
6517 218 242 Yipes Communications, Inc.
4355 215 390 EarthLink, Inc.
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:3 12:755 13:1 15:6 16:1 17:3
20:7 24:881 32:81 38:44 40:26 44:2
55:1 56:1 57:13 61:344 62:450 63:1825
64:1801 65:1811 66:2145 67:258 68:657 69:363
80:442 81:188 82:65 128:141 129:263 130:69
131:78 132:17 134:177 135:16 136:129 137:115
138:127 139:39 140:158 141:132 142:102 143:48
144:85 145:39 146:289 147:74 148:317 149:85
150:98 151:61 152:241 153:61 154:1 155:130
156:61 157:55 158:134 159:143 160:46 161:51
162:368 163:67 164:331 165:167 166:104 167:216
168:176 169:96 170:302 171:7 192:5531 193:2519
194:1999 195:1296 196:516 198:3630 199:2831 200:2941
201:5 202:4313 203:5367 204:3023 205:2012 206:2254
207:2586 208:2440 209:2899 210:976 211:415 212:893
213:996 214:23 215:25 216:3373 217:804 218:118
219:82 220:155 221:19 222:1
End of report
