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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Sun 20 Jul, 2003
Analysis Summary
----------------
BGP routing table entries examined: 127433
Prefixes after maximum aggregation: 79519
Unique aggregates announced to Internet: 60325
Total ASes present in the Internet Routing Table: 15540
Origin-only ASes present in the Internet Routing Table: 13470
Origin ASes announcing only one prefix: 6115
Transit ASes present in the Internet Routing Table: 2070
Transit-only ASes present in the Internet Routing Table: 66
Average AS path length visible in the Internet Routing Table: 4.7
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: 15
Number of addresses announced to Internet: 1239085856
Equivalent to 73 /8s, 218 /16s and 243 /24s
Percentage of available address space announced: 33.4
Percentage of allocated address space announced: 59.7
Percentage of available address space allocated: 56.0
Total number of prefixes smaller than registry allocations: 56562
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 22082
Total APNIC prefixes after maximum aggregation: 12696
Prefixes being announced from the APNIC address blocks: 20515
Unique aggregates announced from the APNIC address blocks: 12419
APNIC Region origin ASes present in the Internet Routing Table: 1862
APNIC Region origin ASes announcing only one prefix: 534
APNIC Region transit ASes present in the Internet Routing Table: 305
Average APNIC Region AS path length visible: 4.8
Max APNIC Region AS path length visible: 17
Number of APNIC addresses announced to Internet: 117863072
Equivalent to 7 /8s, 6 /16s and 114 /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: 77621
Total ARIN prefixes after maximum aggregation: 48332
Prefixes being announced from the ARIN address blocks: 55409
Unique aggregates announced from the ARIN address blocks: 16769
ARIN Region origin ASes present in the Internet Routing Table: 8540
ARIN Region origin ASes announcing only one prefix: 2904
ARIN Region transit ASes present in the Internet Routing Table: 816
Average ARIN Region AS path length visible: 4.5
Max ARIN Region AS path length visible: 17
Number of ARIN addresses announced to Internet: 194870048
Equivalent to 11 /8s, 157 /16s and 123 /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: 22370
Total RIPE prefixes after maximum aggregation: 16200
Prefixes being announced from the RIPE address blocks: 18887
Unique aggregates announced from the RIPE address blocks: 12513
RIPE Region origin ASes present in the Internet Routing Table: 4730
RIPE Region origin ASes announcing only one prefix: 2584
RIPE Region transit ASes present in the Internet Routing Table: 850
Average RIPE Region AS path length visible: 5.3
Max RIPE Region AS path length visible: 20
Number of RIPE addresses announced to Internet: 133742016
Equivalent to 7 /8s, 248 /16s and 189 /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: 5359
Total LACNIC prefixes after maximum aggregation: 2291
Prefixes being announced from the LACNIC address blocks: 4803
Unique aggregates announced from the LACNIC address blocks: 3095
LACNIC Region origin ASes present in the Internet Routing Table: 341
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: 28
Number of LACNIC addresses announced to Internet: 12868096
Equivalent to 0 /8s, 196 /16s and 90 /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 1048 1069 740 Telstra Pty Ltd
4755 435 136 70 Videsh Sanchar Nigam Ltd. Aut
2907 374 1896 350 SINET Japan
17557 354 25 151 Pakistan Telecom
703 330 370 263 UUNET
2764 308 325 275 connect.com.au pty ltd
7474 257 306 200 Optus Communications Pty Ltd
17676 250 3862 19 XTAGE CORPORATION
3786 243 777 210 DACOM Corporation
9583 239 37 22 Satyam Infoway Ltd.,
4134 233 2008 113 Data Communications Bureau
4766 223 2476 166 Korea Internet Exchange for "
9800 192 307 56 CHINA UNICOM
9443 182 58 82 Primus Telecommunications
9498 169 11 18 BHARTI BT INTERNET LTD.
4538 168 1506 21 China Education and Research
9929 164 153 33 China Netcom Corp.
4739 141 58 130 Commerical Internet eXchange
9238 138 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 1525 8800 1071 UUNET Technologies, Inc.
7018 1344 7166 929 AT&T
1239 959 2999 665 Sprint
3908 895 1533 474 Supernet, Inc.
7132 843 6592 233 Southwestern Bell Internet Se
189 689 372 312 Genuity
18566 640 160 8 Covad Communications
4323 608 526 175 Time Warner Communications, I
7843 599 379 239 Adelphia Corp.
1 562 2441 376 GENUITY
11305 558 171 79 Interland Incorporated
6197 541 368 233 BellSouth Network Solutions,
852 521 1124 414 Telus Advanced Communications
209 520 2190 301 Qwest
7066 489 204 258 Virginia Polytechnic Institut
6198 483 270 181 BellSouth Network Solutions,
705 481 190 304 UUNET Technologies, Inc.
20115 473 195 284 Charter Communications
690 444 64 295 Merit Network
4355 403 338 109 EarthLink, Inc.
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 1010 2156 613 UUNET - Commercial IP service
719 311 307 125 LANLINK autonomous system
3301 290 1169 278 TeliaNet Sweden
3320 269 2004 230 Deutsche Telekom AG
3215 240 801 136 France Telecom Transpac
680 233 2054 230 DFN-IP service G-WiN
8220 232 386 220 COLT Internet - International
1257 221 303 179 SWIPnet Swedish IP Network
5400 199 142 116 BT Ignite European Backbone
5515 185 794 150 Sonera Solution Autonomous Sy
786 180 1874 180 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 117 372 114 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 296 98 106 ImpSat
7303 238 37 57 Telecom Argentina Stet-France
8151 219 334 116 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 133 205 95 AVANTEL, S.A.
10620 120 8 33 TVCABLE BOGOTA
6147 95 70 21 Telefonica Del Peru
11992 87 8 36 Integrated Systems
8065 80 9 16 Empresas Publicas de Medellin
6535 75 5 18 Chilesat Servicios Empresari
15311 74 14 38 Telefonica Empresas
1916 73 306 43 Fundacao de Amparo a Pesquisa
11830 69 5 31 Instituto Costarricense de El
4270 67 18 9 Red de Interconexion Universi
7927 65 6 39 Global One Venezuela
7080 64 4 1 Electronica y Comunicaciones
13999 62 36 8 Mega Cable S.A. de C.V.
7984 60 12 40 Global One Colombia
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
18566 640 632 Covad Communications
7132 843 610 Southwestern Bell Internet Se
11305 558 479 Interland Incorporated
4323 608 433 Time Warner Communications, I
3908 895 421 Supernet, Inc.
7018 1344 415 AT&T
702 1010 397 UUNET - Commercial IP service
189 689 377 Genuity
4755 435 365 Videsh Sanchar Nigam Ltd. Aut
7843 599 360 Adelphia Corp.
1221 1048 308 Telstra Pty Ltd
6197 541 308 BellSouth Network Solutions,
6198 483 302 BellSouth Network Solutions,
1239 959 294 Sprint
4355 403 294 EarthLink, Inc.
27364 301 283 Armstrong Cable Services
6347 355 272 SAVVIS Communications Corpora
22909 279 265 Comcast Cable Corporation
25844 258 256 Skadden, Arps, Slate, Meagher
376 372 246 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
39.0.0.0/8 4554 Exchange Point Blocks
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 /8:19 /9:5 /10:8 /11:13 /12:54
/13:97 /14:261 /15:477 /16:7425 /17:1728 /18:3056
/19:8648 /20:8635 /21:6297 /22:9201 /23:10795 /24:69975
/25:171 /26:285 /27:176 /28:39 /29:24 /30:18
/31:0 /32:26
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
702 704 1010 UUNET - Commercial IP service
18566 634 640 Covad Communications
189 609 689 Genuity
3908 569 895 Supernet, Inc.
11305 484 558 Interland Incorporated
7018 473 1344 AT&T
701 433 1525 UUNET Technologies, Inc.
6197 412 541 BellSouth Network Solutions,
690 402 444 Merit Network
7066 387 489 Virginia Polytechnic Institut
6198 377 483 BellSouth Network Solutions,
1239 357 959 Sprint
7843 343 599 Adelphia Corp.
20115 324 473 Charter Communications
27364 295 301 Armstrong Cable Services
25844 258 258 Skadden, Arps, Slate, Meagher
4355 216 403 EarthLink, Inc.
1 212 562 GENUITY
3320 210 269 Deutsche Telekom AG
209 206 520 Qwest
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:2 12:709 13:1 15:4 16:1 17:3
20:6 24:860 25:1 32:99 38:41 40:22
44:2 57:15 61:277 62:374 63:1872 64:1780
65:1972 66:2587 67:200 68:377 69:235 80:395
81:119 82:4 128:131 129:225 130:59 131:77
132:25 134:171 135:7 136:122 137:114 138:113
139:42 140:172 141:115 142:94 143:44 144:98
145:13 146:280 147:61 148:293 149:62 150:104
151:69 152:230 153:102 154:3 155:118 156:56
157:47 158:122 159:136 160:45 161:75 162:375
163:78 164:314 165:139 166:96 167:318 168:172
169:86 170:320 171:8 192:5321 193:2585 194:1972
195:1142 196:471 198:3574 199:2726 200:2965 202:3921
203:5271 204:2972 205:2052 206:2314 207:2426 208:2596
209:2866 210:865 211:361 212:1019 213:861 214:17
215:23 216:3419 217:680 218:95 219:67 220:97
221:8
End of report
