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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Sun 03 Aug, 2003
Analysis Summary
----------------
BGP routing table entries examined: 127253
Prefixes after maximum aggregation: 79568
Unique aggregates announced to Internet: 60034
Total ASes present in the Internet Routing Table: 15621
Origin-only ASes present in the Internet Routing Table: 13548
Origin ASes announcing only one prefix: 6149
Transit ASes present in the Internet Routing Table: 2073
Transit-only ASes present in the Internet Routing Table: 72
Average AS path length visible in the Internet Routing Table: 4.8
Max AS path length visible: 20
Illegal AS announcements present in the Routing Table: 3
Non-routable prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 14
Number of addresses announced to Internet: 1220656768
Equivalent to 72 /8s, 193 /16s and 190 /24s
Percentage of available address space announced: 32.9
Percentage of allocated address space announced: 58.9
Percentage of available address space allocated: 56.0
Total number of prefixes smaller than registry allocations: 56396
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 21998
Total APNIC prefixes after maximum aggregation: 12614
Prefixes being announced from the APNIC address blocks: 20414
Unique aggregates announced from the APNIC address blocks: 12333
APNIC Region origin ASes present in the Internet Routing Table: 1870
APNIC Region origin ASes announcing only one prefix: 531
APNIC Region transit ASes present in the Internet Routing Table: 308
Average APNIC Region AS path length visible: 4.9
Max APNIC Region AS path length visible: 16
Number of APNIC addresses announced to Internet: 118643840
Equivalent to 7 /8s, 18 /16s and 92 /24s
Percentage of available APNIC address space announced: 63.9
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: 77645
Total ARIN prefixes after maximum aggregation: 48424
Prefixes being announced from the ARIN address blocks: 55433
Unique aggregates announced from the ARIN address blocks: 16447
ARIN Region origin ASes present in the Internet Routing Table: 8581
ARIN Region origin ASes announcing only one prefix: 2924
ARIN Region transit ASes present in the Internet Routing Table: 824
Average ARIN Region AS path length visible: 4.6
Max ARIN Region AS path length visible: 17
Number of ARIN addresses announced to Internet: 196210432
Equivalent to 11 /8s, 177 /16s and 239 /24s
Percentage of available ARIN address space announced: 73.1
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
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: 22251
Total RIPE prefixes after maximum aggregation: 16255
Prefixes being announced from the RIPE address blocks: 18858
Unique aggregates announced from the RIPE address blocks: 12580
RIPE Region origin ASes present in the Internet Routing Table: 4754
RIPE Region origin ASes announcing only one prefix: 2600
RIPE Region transit ASes present in the Internet Routing Table: 839
Average RIPE Region AS path length visible: 5.4
Max RIPE Region AS path length visible: 20
Number of RIPE addresses announced to Internet: 134113856
Equivalent to 7 /8s, 254 /16s and 106 /24s
Percentage of available RIPE address space announced: 72.7
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: 5357
Total LACNIC prefixes after maximum aggregation: 2275
Prefixes being announced from the LACNIC address blocks: 4843
Unique aggregates announced from the LACNIC address blocks: 3118
LACNIC Region origin ASes present in the Internet Routing Table: 344
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: 12905472
Equivalent to 0 /8s, 196 /16s and 236 /24s
Percentage of available LACNIC address space announced: 38.5
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 1049 1038 737 Telstra Pty Ltd
4755 439 136 70 Videsh Sanchar Nigam Ltd. Aut
2907 375 1911 350 SINET Japan
703 330 370 264 UUNET
17557 310 22 139 Pakistan Telecom
2764 298 324 269 connect.com.au pty ltd
7474 261 306 201 Optus Communications Pty Ltd
17676 250 3862 19 XTAGE CORPORATION
9583 241 37 20 Satyam Infoway Ltd.,
3786 239 777 205 DACOM Corporation
4134 233 2008 113 Data Communications Bureau
4766 226 2461 169 Korea Internet Exchange for "
9800 195 314 56 CHINA UNICOM
9443 182 58 82 Primus Telecommunications
4538 169 1506 21 China Education and Research
9929 169 153 33 China Netcom Corp.
9498 158 11 37 BHARTI BT INTERNET LTD.
4739 140 58 129 Commerical Internet eXchange
9238 140 9 21 TATA ISP
4716 131 745 125 TTnet
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
701 1489 8778 1050 UUNET Technologies, Inc.
7018 1367 7183 952 AT&T
1239 964 2983 664 Sprint
3908 907 1534 484 Supernet, Inc.
7132 851 6604 236 Southwestern Bell Internet Se
189 670 371 322 Genuity
18566 646 160 8 Covad Communications
4323 621 549 172 Time Warner Communications, I
7843 600 395 221 Adelphia Corp.
6197 554 440 199 BellSouth Network Solutions,
852 523 1124 415 Telus Advanced Communications
209 522 2192 303 Qwest
1 516 1212 338 GENUITY
6198 499 271 188 BellSouth Network Solutions,
7066 485 205 259 Virginia Polytechnic Institut
705 481 190 304 UUNET Technologies, Inc.
20115 472 196 283 Charter Communications
3356 439 10683 361 Level 3 Communications, LLC
690 435 63 287 Merit Network
4355 402 338 109 EarthLink, Inc.
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 730 2123 610 UUNET - Commercial IP service
719 312 307 125 LANLINK autonomous system
3301 288 1169 276 TeliaNet Sweden
3320 259 1987 221 Deutsche Telekom AG
8220 246 432 234 COLT Internet - International
680 232 2053 229 DFN-IP service G-WiN
1257 229 309 185 SWIPnet Swedish IP Network
3215 212 736 120 France Telecom Transpac
5515 186 795 150 Sonera Solution Autonomous Sy
786 172 1793 172 The JANET IP Service
5400 165 158 117 BT Ignite European Backbone
8708 154 108 151 Romania Data Systems S.A.
3303 142 548 139 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 111 812 33 Ibernet, Internet Access Netw
2647 101 4129 44 SITA
5511 99 179 76 France Telecom
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
6140 291 98 107 ImpSat
7303 239 39 57 Telecom Argentina Stet-France
8151 218 334 116 UniNet S.A. de C.V.
11172 177 69 42 Servicios Alestra S.A de C.V
16814 135 9 17 NSS, S.A.
6503 134 205 94 AVANTEL, S.A.
10620 123 8 34 TVCABLE BOGOTA
11340 107 3 38 Red Universitaria Nacional
11992 88 8 33 Integrated Systems
6147 84 70 21 Telefonica Del Peru
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 71 5 31 Instituto Costarricense de El
4270 68 18 9 Red de Interconexion Universi
13999 68 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
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
18566 646 638 Covad Communications
7132 851 615 Southwestern Bell Internet Se
4323 621 449 Time Warner Communications, I
3908 907 423 Supernet, Inc.
7018 1367 415 AT&T
7843 600 379 Adelphia Corp.
4755 439 369 Videsh Sanchar Nigam Ltd. Aut
6197 554 355 BellSouth Network Solutions,
189 670 348 Genuity
11305 358 320 Interland Incorporated
1221 1049 312 Telstra Pty Ltd
6198 499 311 BellSouth Network Solutions,
1239 964 300 Sprint
27364 317 298 Armstrong Cable Services
4355 402 293 EarthLink, Inc.
6347 362 281 SAVVIS Communications Corpora
22909 284 271 Comcast Cable Corporation
25844 258 256 Skadden, Arps, Slate, Meagher
376 359 244 Reseau Interordinateurs Scien
17676 250 231 XTAGE CORPORATION
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
18413 UNALLOCATED 61.67.0.0/20 4747 Taiwan Telecommunica
1877 UNALLOCATED 192.108.199.0/24 1880 Stupi, house man's p
65530 PRIVATE 216.27.102.0/24 10466 Mid Atlantic GigaPOP
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 /8:18 /9:5 /10:8 /11:13 /12:54
/13:98 /14:261 /15:476 /16:7415 /17:1740 /18:3061
/19:8632 /20:8686 /21:6317 /22:9300 /23:10815 /24:69638
/25:163 /26:276 /27:166 /28:28 /29:11 /30:47
/31:0 /32:25
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
18566 640 646 Covad Communications
189 592 670 Genuity
3908 579 907 Supernet, Inc.
7018 481 1367 AT&T
702 444 730 UUNET - Commercial IP service
701 430 1489 UUNET Technologies, Inc.
6197 424 554 BellSouth Network Solutions,
690 394 435 Merit Network
6198 390 499 BellSouth Network Solutions,
7066 382 485 Virginia Polytechnic Institut
1239 366 964 Sprint
7843 333 600 Adelphia Corp.
20115 321 472 Charter Communications
27364 311 317 Armstrong Cable Services
11305 281 358 Interland Incorporated
25844 258 258 Skadden, Arps, Slate, Meagher
4355 216 402 EarthLink, Inc.
1 210 516 GENUITY
209 209 522 Qwest
705 202 481 UUNET Technologies, Inc.
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:2 12:708 13:1 15:4 16:1 17:3
20:6 24:863 25:1 32:99 38:43 40:23
44:2 57:15 61:253 62:390 63:1874 64:1729
65:1998 66:2652 67:213 68:402 69:240 80:392
81:118 82:9 128:133 129:167 130:58 131:81
132:13 134:172 135:7 136:122 137:118 138:118
139:45 140:157 141:115 142:94 143:44 144:99
145:13 146:280 147:59 148:298 149:64 150:105
151:63 152:219 153:57 154:3 155:119 156:56
157:44 158:119 159:137 160:46 161:75 162:410
163:81 164:318 165:142 166:97 167:320 168:181
169:91 170:324 171:8 192:5318 193:2459 194:1976
195:1150 196:473 198:3576 199:2722 200:2999 202:3908
203:5228 204:2962 205:2030 206:2322 207:2423 208:2568
209:2865 210:880 211:287 212:1015 213:897 214:16
215:22 216:3271 217:693 218:96 219:68 220:92
221:9
End of report
