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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Thu 07 Aug, 2003
Analysis Summary
----------------
BGP routing table entries examined: 127372
Prefixes after maximum aggregation: 79728
Unique aggregates announced to Internet: 60129
Total ASes present in the Internet Routing Table: 15637
Origin-only ASes present in the Internet Routing Table: 13559
Origin ASes announcing only one prefix: 6145
Transit ASes present in the Internet Routing Table: 2078
Transit-only ASes present in the Internet Routing Table: 69
Average AS path length visible in the Internet Routing Table: 4.7
Max AS path length visible: 20
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: 1238322816
Equivalent to 73 /8s, 207 /16s and 78 /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: 56411
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 22136
Total APNIC prefixes after maximum aggregation: 12701
Prefixes being announced from the APNIC address blocks: 20554
Unique aggregates announced from the APNIC address blocks: 12343
APNIC Region origin ASes present in the Internet Routing Table: 1872
APNIC Region origin ASes announcing only one prefix: 528
APNIC Region transit ASes present in the Internet Routing Table: 307
Average APNIC Region AS path length visible: 4.8
Max APNIC Region AS path length visible: 16
Number of APNIC addresses announced to Internet: 118884224
Equivalent to 7 /8s, 22 /16s and 7 /24s
Percentage of available APNIC address space announced: 64.1
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: 77560
Total ARIN prefixes after maximum aggregation: 48425
Prefixes being announced from the ARIN address blocks: 55374
Unique aggregates announced from the ARIN address blocks: 16443
ARIN Region origin ASes present in the Internet Routing Table: 8583
ARIN Region origin ASes announcing only one prefix: 2922
ARIN Region transit ASes present in the Internet Routing Table: 826
Average ARIN Region AS path length visible: 4.5
Max ARIN Region AS path length visible: 17
Number of ARIN addresses announced to Internet: 196394752
Equivalent to 11 /8s, 180 /16s and 191 /24s
Percentage of available ARIN address space announced: 73.2
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: 22330
Total RIPE prefixes after maximum aggregation: 16322
Prefixes being announced from the RIPE address blocks: 18927
Unique aggregates announced from the RIPE address blocks: 12648
RIPE Region origin ASes present in the Internet Routing Table: 4770
RIPE Region origin ASes announcing only one prefix: 2601
RIPE Region transit ASes present in the Internet Routing Table: 842
Average RIPE Region AS path length visible: 5.3
Max RIPE Region AS path length visible: 20
Number of RIPE addresses announced to Internet: 134424128
Equivalent to 8 /8s, 3 /16s and 38 /24s
Percentage of available RIPE address space announced: 72.8
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: 5345
Total LACNIC prefixes after maximum aggregation: 2280
Prefixes being announced from the LACNIC address blocks: 4835
Unique aggregates announced from the LACNIC address blocks: 3133
LACNIC Region origin ASes present in the Internet Routing Table: 342
LACNIC Region origin ASes announcing only one prefix: 94
LACNIC Region transit ASes present in the Internet Routing Table: 73
Average LACNIC Region AS path length visible: 5.2
Max LACNIC Region AS path length visible: 16
Number of LACNIC addresses announced to Internet: 12906240
Equivalent to 0 /8s, 196 /16s and 239 /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 1042 1038 735 Telstra Pty Ltd
4755 443 136 71 Videsh Sanchar Nigam Ltd. Aut
2907 376 1912 351 SINET Japan
703 336 370 268 UUNET
17557 299 25 135 Pakistan Telecom
2764 297 323 268 connect.com.au pty ltd
7474 261 306 201 Optus Communications Pty Ltd
17676 251 3878 20 XTAGE CORPORATION
3786 239 777 205 DACOM Corporation
9583 239 37 20 Satyam Infoway Ltd.,
4134 233 2136 114 Data Communications Bureau
4766 226 2461 169 Korea Internet Exchange for "
9800 195 314 56 CHINA UNICOM
9443 182 58 82 Primus Telecommunications
4538 170 1538 21 China Education and Research
9929 168 153 33 China Netcom Corp.
9498 159 11 25 BHARTI BT INTERNET LTD.
9238 140 9 21 TATA ISP
4739 139 58 128 Commerical Internet eXchange
4716 132 745 126 TTnet
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
701 1483 8777 1044 UUNET Technologies, Inc.
7018 1369 7167 957 AT&T
1239 933 2998 654 Sprint
3908 906 1534 484 Supernet, Inc.
7132 854 6604 236 Southwestern Bell Internet Se
189 670 371 324 Genuity
18566 649 160 8 Covad Communications
4323 612 549 172 Time Warner Communications, I
7843 564 400 215 Adelphia Corp.
6197 560 440 199 BellSouth Network Solutions,
852 521 1123 413 Telus Advanced Communications
209 514 2177 296 Qwest
1 513 1196 335 GENUITY
6198 499 271 188 BellSouth Network Solutions,
7066 488 205 259 Virginia Polytechnic Institut
705 481 192 302 UUNET Technologies, Inc.
20115 444 191 281 Charter Communications
3356 442 10683 363 Level 3 Communications, LLC
690 411 60 277 Merit Network
4355 403 338 109 EarthLink, Inc.
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 732 2123 612 UUNET - Commercial IP service
719 312 307 125 LANLINK autonomous system
3301 290 1170 278 TeliaNet Sweden
3320 258 1987 220 Deutsche Telekom AG
8220 247 432 235 COLT Internet - International
680 233 2054 230 DFN-IP service G-WiN
1257 229 309 185 SWIPnet Swedish IP Network
3215 212 736 120 France Telecom Transpac
5515 185 779 149 Sonera Solution Autonomous Sy
786 179 1874 179 The JANET IP Service
5400 167 156 118 BT Ignite European Backbone
8708 154 108 151 Romania Data Systems S.A.
3303 142 540 139 Swisscom Ltd
12302 127 18 34 MobiFon S.A.
2856 125 1315 116 BTnet UK Regional network
3246 122 376 120 Song Networks
3269 117 821 64 TELECOM ITALIA
3352 110 796 32 Ibernet, Internet Access Netw
2647 101 4129 44 SITA
5511 101 179 77 France Telecom
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
6140 291 98 107 ImpSat
7303 241 39 58 Telecom Argentina Stet-France
8151 219 334 117 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 87 8 31 Integrated Systems
6147 84 70 21 Telefonica Del Peru
8065 80 8 17 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 59 12 40 Global One Colombia
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
18566 649 641 Covad Communications
7132 854 618 Southwestern Bell Internet Se
4323 612 440 Time Warner Communications, I
3908 906 422 Supernet, Inc.
7018 1369 412 AT&T
4755 443 372 Videsh Sanchar Nigam Ltd. Aut
6197 560 361 BellSouth Network Solutions,
7843 564 349 Adelphia Corp.
189 670 346 Genuity
11305 358 320 Interland Incorporated
6198 499 311 BellSouth Network Solutions,
1221 1042 307 Telstra Pty Ltd
27364 317 298 Armstrong Cable Services
4355 403 294 EarthLink, Inc.
6347 364 283 SAVVIS Communications Corpora
1239 933 279 Sprint
22909 284 271 Comcast Cable Corporation
25844 258 256 Skadden, Arps, Slate, Meagher
376 359 244 Reseau Interordinateurs Scien
17676 251 231 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
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 /8:19 /9:5 /10:8 /11:13 /12:54
/13:99 /14:263 /15:475 /16:7418 /17:1744 /18:3074
/19:8673 /20:8701 /21:6335 /22:9322 /23:10786 /24:69667
/25:163 /26:278 /27:165 /28:27 /29:11 /30:47
/31:0 /32:25
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
18566 643 649 Covad Communications
189 592 670 Genuity
3908 578 906 Supernet, Inc.
7018 481 1369 AT&T
702 446 732 UUNET - Commercial IP service
701 429 1483 UUNET Technologies, Inc.
6197 426 560 BellSouth Network Solutions,
6198 390 499 BellSouth Network Solutions,
7066 385 488 Virginia Polytechnic Institut
690 371 411 Merit Network
1239 337 933 Sprint
27364 311 317 Armstrong Cable Services
7843 297 564 Adelphia Corp.
20115 296 444 Charter Communications
11305 281 358 Interland Incorporated
25844 258 258 Skadden, Arps, Slate, Meagher
4355 217 403 EarthLink, Inc.
1 210 513 GENUITY
209 208 514 Qwest
705 205 481 UUNET Technologies, Inc.
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:2 12:712 13:1 15:4 16:1 17:3
20:6 24:854 25:1 32:98 38:42 40:23
44:2 57:15 61:287 62:385 63:1879 64:1728
65:2008 66:2649 67:213 68:386 69:241 80:396
81:119 82:9 128:132 129:165 130:58 131:80
132:13 134:175 135:7 136:122 137:118 138:117
139:46 140:141 141:115 142:94 143:44 144:98
145:13 146:279 147:59 148:300 149:64 150:105
151:63 152:214 153:57 154:3 155:119 156:56
157:47 158:118 159:137 160:47 161:74 162:407
163:80 164:323 165:143 166:96 167:320 168:181
169:91 170:319 171:8 192:5322 193:2475 194:1984
195:1153 196:472 198:3582 199:2719 200:2989 202:3921
203:5249 204:2959 205:2030 206:2318 207:2424 208:2566
209:2859 210:882 211:290 212:1011 213:910 214:16
215:22 216:3238 217:690 218:97 219:70 220:98
221:9
End of report
