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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Fri 25 Jul, 2003
Analysis Summary
----------------
BGP routing table entries examined: 127326
Prefixes after maximum aggregation: 79479
Unique aggregates announced to Internet: 60348
Total ASes present in the Internet Routing Table: 15558
Origin-only ASes present in the Internet Routing Table: 13497
Origin ASes announcing only one prefix: 6120
Transit ASes present in the Internet Routing Table: 2061
Transit-only ASes present in the Internet Routing Table: 67
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: 1204956864
Equivalent to 71 /8s, 210 /16s and 46 /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: 56492
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 22123
Total APNIC prefixes after maximum aggregation: 12674
Prefixes being announced from the APNIC address blocks: 20567
Unique aggregates announced from the APNIC address blocks: 12437
APNIC Region origin ASes present in the Internet Routing Table: 1869
APNIC Region origin ASes announcing only one prefix: 539
APNIC Region transit ASes present in the Internet Routing Table: 303
Average APNIC Region AS path length visible: 4.9
Max APNIC Region AS path length visible: 17
Number of APNIC addresses announced to Internet: 117885216
Equivalent to 7 /8s, 6 /16s and 201 /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: 77534
Total ARIN prefixes after maximum aggregation: 48341
Prefixes being announced from the ARIN address blocks: 55294
Unique aggregates announced from the ARIN address blocks: 16783
ARIN Region origin ASes present in the Internet Routing Table: 8551
ARIN Region origin ASes announcing only one prefix: 2902
ARIN Region transit ASes present in the Internet Routing Table: 818
Average ARIN Region AS path length visible: 4.6
Max ARIN Region AS path length visible: 17
Number of ARIN addresses announced to Internet: 194936864
Equivalent to 11 /8s, 158 /16s and 128 /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: 22389
Total RIPE prefixes after maximum aggregation: 16211
Prefixes being announced from the RIPE address blocks: 18898
Unique aggregates announced from the RIPE address blocks: 12546
RIPE Region origin ASes present in the Internet Routing Table: 4730
RIPE Region origin ASes announcing only one prefix: 2585
RIPE Region transit ASes present in the Internet Routing Table: 840
Average RIPE Region AS path length visible: 5.3
Max RIPE Region AS path length visible: 20
Number of RIPE addresses announced to Internet: 133778880
Equivalent to 7 /8s, 249 /16s and 77 /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: 5279
Total LACNIC prefixes after maximum aggregation: 2253
Prefixes being announced from the LACNIC address blocks: 4738
Unique aggregates announced from the LACNIC address blocks: 3049
LACNIC Region origin ASes present in the Internet Routing Table: 340
LACNIC Region origin ASes announcing only one prefix: 94
LACNIC Region transit ASes present in the Internet Routing Table: 72
Average LACNIC Region AS path length visible: 5.2
Max LACNIC Region AS path length visible: 16
Number of LACNIC addresses announced to Internet: 12197888
Equivalent to 0 /8s, 186 /16s and 32 /24s
Percentage of available LACNIC address space announced: 36.4
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 1047 1053 738 Telstra Pty Ltd
4755 437 136 70 Videsh Sanchar Nigam Ltd. Aut
2907 373 1880 349 SINET Japan
17557 332 23 144 Pakistan Telecom
703 330 370 263 UUNET
2764 309 326 277 connect.com.au pty ltd
7474 285 306 201 Optus Communications Pty Ltd
17676 250 3862 19 XTAGE CORPORATION
9583 242 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 195 314 56 CHINA UNICOM
9443 182 58 82 Primus Telecommunications
4538 168 1506 21 China Education and Research
9929 164 153 33 China Netcom Corp.
9498 160 11 28 BHARTI BT INTERNET LTD.
4739 141 58 130 Commerical Internet eXchange
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 1507 8782 1065 UUNET Technologies, Inc.
7018 1345 7164 934 AT&T
1239 962 2997 665 Sprint
3908 900 1550 479 Supernet, Inc.
7132 845 6600 234 Southwestern Bell Internet Se
189 689 372 312 Genuity
18566 636 160 8 Covad Communications
4323 609 526 175 Time Warner Communications, I
7843 602 388 240 Adelphia Corp.
1 551 2378 365 GENUITY
6197 548 439 197 BellSouth Network Solutions,
852 523 1124 416 Telus Advanced Communications
209 520 2191 303 Qwest
7066 488 204 258 Virginia Polytechnic Institut
6198 484 270 182 BellSouth Network Solutions,
705 479 190 303 UUNET Technologies, Inc.
20115 470 195 281 Charter Communications
690 444 64 294 Merit Network
4355 403 338 109 EarthLink, Inc.
2386 397 541 227 AT&T Data Communications Serv
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 1009 2157 612 UUNET - Commercial IP service
719 312 307 125 LANLINK autonomous system
3301 291 1169 279 TeliaNet Sweden
3320 269 2004 230 Deutsche Telekom AG
680 232 2053 229 DFN-IP service G-WiN
8220 232 402 220 COLT Internet - International
1257 227 309 185 SWIPnet Swedish IP Network
3215 217 736 121 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 125 1315 116 BTnet UK Regional network
3246 121 374 119 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 297 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 139 4 49 Red Universitaria Nacional
16814 135 9 17 NSS, S.A.
6503 134 205 94 AVANTEL, S.A.
10620 120 8 33 TVCABLE BOGOTA
6147 93 70 21 Telefonica Del Peru
11992 88 8 37 Integrated Systems
8065 80 9 16 Empresas Publicas de Medellin
6535 75 5 18 Chilesat Servicios Empresari
15311 74 14 38 Telefonica Empresas
11830 70 5 32 Instituto Costarricense de El
4270 67 18 9 Red de Interconexion Universi
13999 67 36 8 Mega Cable S.A. de C.V.
7927 65 6 39 Global One Venezuela
7080 64 4 1 Electronica y Comunicaciones
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
4323 609 434 Time Warner Communications, I
3908 900 421 Supernet, Inc.
7018 1345 411 AT&T
702 1009 397 UUNET - Commercial IP service
189 689 377 Genuity
4755 437 367 Videsh Sanchar Nigam Ltd. Aut
7843 602 362 Adelphia Corp.
6197 548 351 BellSouth Network Solutions,
11305 356 311 Interland Incorporated
1221 1047 309 Telstra Pty Ltd
6198 484 302 BellSouth Network Solutions,
27364 317 298 Armstrong Cable Services
1239 962 297 Sprint
4355 403 294 EarthLink, Inc.
6347 354 271 SAVVIS Communications Corpora
22909 280 266 Comcast Cable Corporation
25844 258 256 Skadden, Arps, Slate, Meagher
376 358 243 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
/13:96 /14:260 /15:477 /16:7420 /17:1730 /18:3053
/19:8642 /20:8617 /21:6317 /22:9245 /23:10774 /24:69833
/25:183 /26:301 /27:197 /28:27 /29:11 /30:20
/31:0 /32:26
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
702 703 1009 UUNET - Commercial IP service
18566 630 636 Covad Communications
189 609 689 Genuity
3908 573 900 Supernet, Inc.
7018 473 1345 AT&T
701 434 1507 UUNET Technologies, Inc.
6197 415 548 BellSouth Network Solutions,
690 403 444 Merit Network
7066 386 488 Virginia Polytechnic Institut
6198 378 484 BellSouth Network Solutions,
1239 361 962 Sprint
7843 341 602 Adelphia Corp.
20115 321 470 Charter Communications
27364 311 317 Armstrong Cable Services
11305 281 356 Interland Incorporated
25844 258 258 Skadden, Arps, Slate, Meagher
4355 216 403 EarthLink, Inc.
1 214 551 GENUITY
3320 210 269 Deutsche Telekom AG
209 205 520 Qwest
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:2 12:701 13:1 15:4 16:1 17:3
20:6 24:873 25:1 32:98 38:40 40:22
44:2 57:15 61:281 62:359 63:1881 64:1724
65:1977 66:2605 67:210 68:390 69:237 80:388
81:118 82:6 128:130 129:225 130:58 131:81
132:14 134:175 135:7 136:122 137:117 138:120
139:42 140:157 141:115 142:94 143:45 144:105
145:13 146:280 147:62 148:293 149:63 150:104
151:63 152:225 153:99 154:3 155:119 156:56
157:48 158:122 159:137 160:45 161:75 162:374
163:79 164:321 165:140 166:97 167:318 168:180
169:88 170:317 171:8 192:5331 193:2575 194:1991
195:1146 196:472 198:3573 199:2724 200:2954 202:3931
203:5268 204:2964 205:2042 206:2325 207:2415 208:2594
209:2864 210:868 211:360 212:1022 213:875 214:16
215:22 216:3266 217:684 218:96 219:68 220:98
221:8
End of report
