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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Thu 15 Jan, 2004
Analysis Summary
----------------
BGP routing table entries examined: 131627
Prefixes after maximum aggregation: 80931
Unique aggregates announced to Internet: 63321
Total ASes present in the Internet Routing Table: 16453
Origin-only ASes present in the Internet Routing Table: 14285
Origin ASes announcing only one prefix: 6568
Transit ASes present in the Internet Routing Table: 2168
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: 1278372260
Equivalent to 76 /8s, 50 /16s and 105 /24s
Percentage of available address space announced: 34.5
Percentage of allocated address space announced: 60.2
Percentage of available address space allocated: 57.3
Total number of prefixes smaller than registry allocations: 58040
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 24370
Total APNIC prefixes after maximum aggregation: 13016
Prefixes being announced from the APNIC address blocks: 22851
Unique aggregates announced from the APNIC address blocks: 12920
APNIC Region origin ASes present in the Internet Routing Table: 1968
APNIC Region origin ASes announcing only one prefix: 581
APNIC Region transit ASes present in the Internet Routing Table: 309
Average APNIC Region AS path length visible: 4.9
Max APNIC Region AS path length visible: 16
Number of APNIC addresses announced to Internet: 134223232
Equivalent to 8 /8s, 0 /16s and 21 /24s
Percentage of available APNIC address space announced: 72.3
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: 77194
Total ARIN prefixes after maximum aggregation: 47889
Prefixes being announced from the ARIN address blocks: 59742
Unique aggregates announced from the ARIN address blocks: 20694
ARIN Region origin ASes present in the Internet Routing Table: 8846
ARIN Region origin ASes announcing only one prefix: 3110
ARIN Region transit ASes present in the Internet Routing Table: 846
Average ARIN Region AS path length visible: 4.6
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 214283488
Equivalent to 12 /8s, 197 /16s and 180 /24s
Percentage of available ARIN address space announced: 75.1
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: 23530
Total RIPE prefixes after maximum aggregation: 17152
Prefixes being announced from the RIPE address blocks: 20366
Unique aggregates announced from the RIPE address blocks: 13508
RIPE Region origin ASes present in the Internet Routing Table: 5108
RIPE Region origin ASes announcing only one prefix: 2742
RIPE Region transit ASes present in the Internet Routing Table: 891
Average RIPE Region AS path length visible: 5.6
Max RIPE Region AS path length visible: 30
Number of RIPE addresses announced to Internet: 148808320
Equivalent to 8 /8s, 222 /16s and 162 /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: 5387
Total LACNIC prefixes after maximum aggregation: 2198
Prefixes being announced from the LACNIC address blocks: 4990
Unique aggregates announced from the LACNIC address blocks: 3125
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: 13918464
Equivalent to 0 /8s, 212 /16s and 97 /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: 1141
Total AfriNIC prefixes after maximum aggregation: 676
Prefixes being announced from the AfriNIC address blocks: 734
Unique aggregates announced from the AfriNIC address blocks: 566
AfriNIC Region origin ASes present in the Internet Routing Table: 92
AfriNIC Region origin ASes announcing only one prefix: 28
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: 1757952
Equivalent to 0 /8s, 26 /16s and 211 /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 904 1097 650 Telstra Pty Ltd
4134 693 2413 110 Data Communications Bureau
4766 403 2903 237 Korea Internet Exchange for "
2907 362 1847 339 SINET Japan
9443 344 69 79 Primus Telecommunications
703 338 372 262 UUNET
17557 310 22 151 Pakistan Telecom
9583 294 44 11 Satyam Infoway Ltd.,
17676 293 4316 39 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
9800 214 347 55 CHINA UNICOM
9929 214 153 28 China Netcom Corp.
9498 181 30 33 BHARTI BT INTERNET LTD.
17642 153 40 112 RequestDSL BGP AS# for Sydney
17964 153 117 58 Beijing Dian-Xin-Tong Network
3786 147 752 129 DACOM Corporation
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
701 1401 8678 968 UUNET Technologies, Inc.
7018 1399 7032 973 AT&T
1239 947 3105 663 Sprint
6197 775 483 251 BellSouth Network Solutions,
3356 731 10924 583 Level 3 Communications, LLC
209 727 3530 507 Qwest
18566 681 176 8 Covad Communications
4323 673 589 202 Time Warner Communications, I
20115 580 328 332 Charter Communications
6198 545 340 196 BellSouth Network Solutions,
7843 509 547 121 Adelphia Corp.
852 505 1124 401 Telus Advanced Communications
7066 503 207 271 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.
705 379 4291 231 UUNET Technologies, Inc.
27364 379 28 23 Armstrong Cable Services
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 690 2076 573 UUNET - Commercial IP service
3301 335 1159 316 TeliaNet Sweden
3320 282 1972 232 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
719 234 288 104 LANLINK autonomous system
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 136 224 126 BT Ignite European Backbone
12302 126 18 33 MobiFon S.A.
3269 120 972 64 TELECOM ITALIA
2856 119 1294 109 BTnet UK Regional network
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 142 52 19 Telecom Argentina Stet-France
6505 132 90 92 Global One Communicaoes Ltda
6503 126 220 91 AVANTEL, S.A.
6147 124 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
1916 59 247 39 Fundacao de Amparo a Pesquisa
7738 59 218 13 Telecomunicacoes da Bahia S.A
5639 58 7 8 Telecommunications Services o
10292 58 5 26 TELECOMMUNICATIONS OF JAMAICA
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
5713 24 93 22 Telkom SA Ltd
9129 23 3 4 UUNET Kenya
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
2609 12 10 3 Tunisia BackBone AS
8346 12 6 12 SONATEL-AS Autonomous System
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 775 524 BellSouth Network Solutions,
4323 673 471 Time Warner Communications, I
7018 1399 426 AT&T
7843 509 388 Adelphia Corp.
27364 379 356 Armstrong Cable Services
6198 545 349 BellSouth Network Solutions,
22909 328 311 Comcast Cable Corporation
5668 321 305 Century Telephone
22773 331 301 Cox Communications, Inc. Atla
4355 390 289 EarthLink, Inc.
1239 947 284 Sprint
9583 294 283 Satyam Infoway Ltd.,
6140 350 281 ImpSat
9443 344 265 Primus Telecommunications
1221 904 254 Telstra Pty Ltd
6347 331 254 SAVVIS Communications Corpora
17676 293 254 XTAGE CORPORATION
20115 580 248 Charter Communications
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 /8:20 /9:4 /10:6 /11:15 /12:57
/13:104 /14:281 /15:495 /16:7548 /17:1836 /18:3437
/19:8897 /20:9342 /21:6708 /22:9441 /23:11000 /24:71681
/25:190 /26:299 /27:176 /28:31 /29:5 /30:43
/31:0 /32:11
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
18566 665 681 Covad Communications
6197 619 775 BellSouth Network Solutions,
7018 517 1399 AT&T
701 422 1401 UUNET Technologies, Inc.
702 421 690 UUNET - Commercial IP service
6198 401 545 BellSouth Network Solutions,
7066 397 503 Virginia Polytechnic Institut
27364 373 379 Armstrong Cable Services
3356 370 731 Level 3 Communications, LLC
690 361 398 Merit Network
20115 360 580 Charter Communications
1239 332 947 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 229 282 Deutsche Telekom AG
6386 223 249 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 24:879 32:81 38:44 40:26 44:2
55:1 56:1 57:13 61:345 62:451 63:1821
64:1806 65:1812 66:2146 67:261 68:666 69:370
80:453 81:188 82:64 128:142 129:261 130:69
131:77 132:17 134:175 135:16 136:128 137:115
138:125 139:39 140:158 141:132 142:102 143:48
144:83 145:39 146:289 147:74 148:319 149:84
150:119 151:61 152:212 153:61 154:1 155:131
156:61 157:55 158:134 159:143 160:46 161:51
162:369 163:69 164:332 165:167 166:103 167:216
168:176 169:96 170:304 171:7 192:5528 193:2516
194:2000 195:1287 196:515 198:3629 199:2832 200:2945
201:5 202:4322 203:5367 204:3026 205:2018 206:2245
207:2592 208:2435 209:2895 210:1020 211:419 212:889
213:989 214:23 215:25 216:3368 217:803 218:118
219:83 220:155 221:19 222:1
End of report
