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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Wed 23 Jul, 2003
Analysis Summary
----------------
BGP routing table entries examined: 127493
Prefixes after maximum aggregation: 79567
Unique aggregates announced to Internet: 60503
Total ASes present in the Internet Routing Table: 15542
Origin-only ASes present in the Internet Routing Table: 13478
Origin ASes announcing only one prefix: 6104
Transit ASes present in the Internet Routing Table: 2064
Transit-only ASes present in the Internet Routing Table: 68
Average AS path length visible in the Internet Routing Table: 4.8
Max AS path length visible: 255
Illegal AS announcements present in the Routing Table: 2
Non-routable prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 14
Number of addresses announced to Internet: 1205211840
Equivalent to 71 /8s, 214 /16s and 18 /24s
Percentage of available address space announced: 32.5
Percentage of allocated address space announced: 58.1
Percentage of available address space allocated: 56.0
Total number of prefixes smaller than registry allocations: 56662
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 22081
Total APNIC prefixes after maximum aggregation: 12687
Prefixes being announced from the APNIC address blocks: 20535
Unique aggregates announced from the APNIC address blocks: 12442
APNIC Region origin ASes present in the Internet Routing Table: 1862
APNIC Region origin ASes announcing only one prefix: 531
APNIC Region transit ASes present in the Internet Routing Table: 306
Average APNIC Region AS path length visible: 4.8
Max APNIC Region AS path length visible: 17
Number of APNIC addresses announced to Internet: 117765664
Equivalent to 7 /8s, 4 /16s and 246 /24s
Percentage of available APNIC address space announced: 63.5
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: 77618
Total ARIN prefixes after maximum aggregation: 48333
Prefixes being announced from the ARIN address blocks: 55426
Unique aggregates announced from the ARIN address blocks: 16893
ARIN Region origin ASes present in the Internet Routing Table: 8533
ARIN Region origin ASes announcing only one prefix: 2895
ARIN Region transit ASes present in the Internet Routing Table: 818
Average ARIN Region AS path length visible: 4.5
Max ARIN Region AS path length visible: 17
Number of ARIN addresses announced to Internet: 194915360
Equivalent to 11 /8s, 158 /16s and 44 /24s
Percentage of available ARIN address space announced: 72.6
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
ARIN Address Blocks 24/8, 63/8, 64/6, 68/7, 199/8, 204/6, 208/7
and 216/8
RIPE Region Analysis Summary
----------------------------
Prefixes being announced by RIPE Region ASes: 22461
Total RIPE prefixes after maximum aggregation: 16250
Prefixes being announced from the RIPE address blocks: 18949
Unique aggregates announced from the RIPE address blocks: 12547
RIPE Region origin ASes present in the Internet Routing Table: 4736
RIPE Region origin ASes announcing only one prefix: 2585
RIPE Region transit ASes present in the Internet Routing Table: 841
Average RIPE Region AS path length visible: 5.3
Max RIPE Region AS path length visible: 20
Number of RIPE addresses announced to Internet: 133803968
Equivalent to 7 /8s, 249 /16s and 175 /24s
Percentage of available RIPE address space announced: 72.5
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
RIPE Address Blocks 62/8, 80/7, 82/8, 188/8, 193/8, 194/7,
212/7 and 217/8
LACNIC Region Analysis Summary
------------------------------
Prefixes being announced by LACNIC Region ASes: 5332
Total LACNIC prefixes after maximum aggregation: 2297
Prefixes being announced from the LACNIC address blocks: 4774
Unique aggregates announced from the LACNIC address blocks: 3087
LACNIC Region origin ASes present in the Internet Routing Table: 342
LACNIC Region origin ASes announcing only one prefix: 93
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: 18
Number of LACNIC addresses announced to Internet: 12852736
Equivalent to 0 /8s, 196 /16s and 30 /24s
Percentage of available LACNIC address space announced: 38.3
LACNIC AS Blocks 26592 - 26623, 27648 - 28671
LACNIC Address Blocks 200/7
APNIC Region per AS prefix count summary
----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
1221 1050 1053 741 Telstra Pty Ltd
4755 435 136 70 Videsh Sanchar Nigam Ltd. Aut
2907 374 1896 350 SINET Japan
17557 332 23 144 Pakistan Telecom
703 329 369 262 UUNET
2764 310 326 277 connect.com.au pty ltd
7474 285 306 201 Optus Communications Pty Ltd
17676 250 3862 19 XTAGE CORPORATION
9583 241 37 22 Satyam Infoway Ltd.,
3786 238 777 205 DACOM Corporation
4134 233 2008 113 Data Communications Bureau
4766 223 2476 166 Korea Internet Exchange for "
9800 193 309 56 CHINA UNICOM
9443 182 58 82 Primus Telecommunications
9498 165 11 28 BHARTI BT INTERNET LTD.
9929 164 153 33 China Netcom Corp.
4739 141 58 130 Commerical Internet eXchange
4538 140 1506 21 China Education and Research
9238 139 8 20 TATA ISP
4716 132 745 126 TTnet
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
701 1523 8800 1071 UUNET Technologies, Inc.
7018 1343 7165 931 AT&T
1239 958 2998 665 Sprint
3908 898 1550 477 Supernet, Inc.
7132 845 6600 234 Southwestern Bell Internet Se
189 689 372 312 Genuity
18566 636 160 8 Covad Communications
4323 607 510 174 Time Warner Communications, I
7843 598 379 242 Adelphia Corp.
11305 563 172 80 Interland Incorporated
1 554 2426 368 GENUITY
6197 540 368 233 BellSouth Network Solutions,
852 525 1124 416 Telus Advanced Communications
209 519 2190 301 Qwest
7066 487 204 258 Virginia Polytechnic Institut
6198 482 270 181 BellSouth Network Solutions,
705 481 190 305 UUNET Technologies, Inc.
20115 470 195 281 Charter Communications
690 444 63 296 Merit Network
4355 403 338 109 EarthLink, Inc.
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 1008 2157 613 UUNET - Commercial IP service
719 312 307 125 LANLINK autonomous system
3301 291 1169 279 TeliaNet Sweden
3320 269 2004 230 Deutsche Telekom AG
8220 233 402 221 COLT Internet - International
680 232 2053 229 DFN-IP service G-WiN
1257 227 309 185 SWIPnet Swedish IP Network
3215 224 800 127 France Telecom Transpac
5400 200 158 117 BT Ignite European Backbone
5515 186 795 150 Sonera Solution Autonomous Sy
786 179 1874 179 The JANET IP Service
8708 154 108 151 Romania Data Systems S.A.
3303 143 548 140 Swisscom Ltd
12302 127 18 34 MobiFon S.A.
2856 126 1315 117 BTnet UK Regional network
3246 120 373 118 Song Networks
3269 117 821 64 TELECOM ITALIA
3352 111 796 32 Ibernet, Internet Access Netw
5511 98 179 75 France Telecom
2647 97 4129 41 SITA
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
6140 298 98 106 ImpSat
7303 238 38 57 Telecom Argentina Stet-France
8151 218 334 115 UniNet S.A. de C.V.
11172 177 69 42 Servicios Alestra S.A de C.V
11340 141 4 51 Red Universitaria Nacional
16814 135 9 17 NSS, S.A.
6503 131 205 93 AVANTEL, S.A.
10620 120 8 33 TVCABLE BOGOTA
6147 95 70 21 Telefonica Del Peru
11992 90 9 38 Integrated Systems
6535 75 5 18 Chilesat Servicios Empresari
15311 74 14 38 Telefonica Empresas
11830 70 5 32 Instituto Costarricense de El
1916 69 286 40 Fundacao de Amparo a Pesquisa
4270 66 18 9 Red de Interconexion Universi
7927 65 6 39 Global One Venezuela
7080 64 4 1 Electronica y Comunicaciones
13999 61 36 8 Mega Cable S.A. de C.V.
7984 60 12 40 Global One Colombia
7738 57 186 12 Telecomunicacoes da Bahia S.A
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
18566 636 628 Covad Communications
7132 845 611 Southwestern Bell Internet Se
11305 563 483 Interland Incorporated
4323 607 433 Time Warner Communications, I
3908 898 421 Supernet, Inc.
7018 1343 412 AT&T
702 1008 395 UUNET - Commercial IP service
189 689 377 Genuity
4755 435 365 Videsh Sanchar Nigam Ltd. Aut
7843 598 356 Adelphia Corp.
1221 1050 309 Telstra Pty Ltd
6197 540 307 BellSouth Network Solutions,
6198 482 301 BellSouth Network Solutions,
27364 317 298 Armstrong Cable Services
4355 403 294 EarthLink, Inc.
1239 958 293 Sprint
6347 355 272 SAVVIS Communications Corpora
22909 280 266 Comcast Cable Corporation
25844 258 256 Skadden, Arps, Slate, Meagher
376 360 245 Reseau Interordinateurs Scien
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
1877 UNALLOCATED 192.108.199.0/24 1880 Stupi, house man's p
18412 UNALLOCATED 211.77.0.0/19 9674 Far EastTone Telecom
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
192.119.135.0/24 270 NASA
192.135.50.0/24 7018 AT&T
192.136.79.0/24 719 LANLINK autonomous system
192.153.136.0/21 568 DISO-UNRRA
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 /8:17 /9:5 /10:8 /11:13 /12:54
/13:97 /14:261 /15:476 /16:7421 /17:1728 /18:3057
/19:8644 /20:8624 /21:6293 /22:9213 /23:10797 /24:70002
/25:178 /26:297 /27:198 /28:39 /29:24 /30:21
/31:0 /32:26
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
702 701 1008 UUNET - Commercial IP service
18566 630 636 Covad Communications
189 609 689 Genuity
3908 571 898 Supernet, Inc.
11305 489 563 Interland Incorporated
7018 473 1343 AT&T
701 432 1523 UUNET Technologies, Inc.
6197 411 540 BellSouth Network Solutions,
690 403 444 Merit Network
7066 385 487 Virginia Polytechnic Institut
6198 376 482 BellSouth Network Solutions,
1239 357 958 Sprint
7843 342 598 Adelphia Corp.
20115 321 470 Charter Communications
27364 311 317 Armstrong Cable Services
25844 258 258 Skadden, Arps, Slate, Meagher
4355 216 403 EarthLink, Inc.
1 212 554 GENUITY
3320 210 269 Deutsche Telekom AG
209 206 519 Qwest
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:2 12:707 13:1 15:4 16:1 17:3
20:6 24:874 25:1 32:99 38:39 40:23
44:2 55:1 57:15 61:281 62:377 63:1867
64:1787 65:1973 66:2598 67:204 68:376 69:238
80:394 81:119 82:4 128:132 129:225 130:60
131:80 132:14 134:175 135:7 136:122 137:117
138:113 139:42 140:157 141:115 142:94 143:45
144:95 145:13 146:275 147:61 148:293 149:62
150:104 151:63 152:232 153:99 154:4 155:119
156:56 157:48 158:121 159:137 160:45 161:75
162:372 163:80 164:319 165:139 166:96 167:318
168:181 169:86 170:314 171:8 192:5336 193:2592
194:1987 195:1147 196:473 198:3571 199:2726 200:2940
202:3914 203:5279 204:2972 205:2050 206:2306 207:2425
208:2589 209:2863 210:864 211:361 212:1025 213:873
214:16 215:22 216:3411 217:685 218:95 219:66
220:97 221:8
End of report
