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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Fri 20 Jun, 2003
Analysis Summary
----------------
BGP routing table entries examined: 125793
Prefixes after maximum aggregation: 78951
Unique aggregates announced to Internet: 59447
Total ASes present in the Internet Routing Table: 15377
Origin-only ASes present in the Internet Routing Table: 13329
Origin ASes announcing only one prefix: 6035
Transit ASes present in the Internet Routing Table: 2048
Transit-only ASes present in the Internet Routing Table: 73
Average AS path length visible in the Internet Routing Table: 4.9
Max AS path length visible: 255
Illegal AS announcements present in the Routing Table: 1
Non-routable prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 17
Number of addresses announced to Internet: 1252478304
Equivalent to 74 /8s, 167 /16s and 77 /24s
Percentage of available address space announced: 33.8
Percentage of allocated address space announced: 60.4
Percentage of available address space allocated: 55.9
Total number of prefixes smaller than registry allocations: 55384
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 21509
Total APNIC prefixes after maximum aggregation: 12532
Prefixes being announced from the APNIC address blocks: 19945
Unique aggregates announced from the APNIC address blocks: 12218
APNIC Region origin ASes present in the Internet Routing Table: 1821
APNIC Region origin ASes announcing only one prefix: 527
APNIC Region transit ASes present in the Internet Routing Table: 296
Average APNIC Region AS path length visible: 4.9
Max APNIC Region AS path length visible: 17
Number of APNIC addresses announced to Internet: 115924384
Equivalent to 6 /8s, 232 /16s and 221 /24s
Percentage of available APNIC address space announced: 62.5
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: 77148
Total ARIN prefixes after maximum aggregation: 48134
Prefixes being announced from the ARIN address blocks: 55421
Unique aggregates announced from the ARIN address blocks: 16497
ARIN Region origin ASes present in the Internet Routing Table: 8487
ARIN Region origin ASes announcing only one prefix: 2895
ARIN Region transit ASes present in the Internet Routing Table: 820
Average ARIN Region AS path length visible: 4.7
Max ARIN Region AS path length visible: 17
Number of ARIN addresses announced to Internet: 193132032
Equivalent to 11 /8s, 130 /16s and 246 /24s
Percentage of available ARIN address space announced: 71.9
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: 21740
Total RIPE prefixes after maximum aggregation: 16018
Prefixes being announced from the RIPE address blocks: 18235
Unique aggregates announced from the RIPE address blocks: 12221
RIPE Region origin ASes present in the Internet Routing Table: 4658
RIPE Region origin ASes announcing only one prefix: 2526
RIPE Region transit ASes present in the Internet Routing Table: 832
Average RIPE Region AS path length visible: 5.5
Max RIPE Region AS path length visible: 20
Number of RIPE addresses announced to Internet: 132361024
Equivalent to 7 /8s, 227 /16s and 171 /24s
Percentage of available RIPE address space announced: 71.7
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: 5395
Total LACNIC prefixes after maximum aggregation: 2267
Prefixes being announced from the LACNIC address blocks: 4801
Unique aggregates announced from the LACNIC address blocks: 2970
LACNIC Region origin ASes present in the Internet Routing Table: 337
LACNIC Region origin ASes announcing only one prefix: 87
LACNIC Region transit ASes present in the Internet Routing Table: 69
Average LACNIC Region AS path length visible: 5.4
Max LACNIC Region AS path length visible: 24
Number of LACNIC addresses announced to Internet: 12778496
Equivalent to 0 /8s, 194 /16s and 252 /24s
Percentage of available LACNIC address space announced: 38.1
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 1068 1071 761 Telstra Pty Ltd
4755 419 133 68 Videsh Sanchar Nigam Ltd. Aut
2907 374 1895 350 SINET Japan
17557 345 24 149 Pakistan Telecom
703 335 371 268 UUNET
2764 307 325 274 connect.com.au pty ltd
7474 274 306 205 Optus Communications Pty Ltd
17676 250 3862 19 XTAGE CORPORATION
3786 244 773 211 DACOM Corporation
9583 233 37 21 Satyam Infoway Ltd.,
4134 225 1915 112 Data Communications Bureau
4766 212 2475 159 Korea Internet Exchange for "
9800 186 302 61 CHINA UNICOM
9443 182 58 82 Primus Telecommunications
9498 165 11 27 BHARTI BT INTERNET LTD.
4739 139 58 127 Commerical Internet eXchange
9929 139 169 34 China Netcom Corp.
9238 135 8 18 TATA ISP
4716 128 745 122 TTnet
7539 127 155 101 TANet2, sponsored by NSC, TAI
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
701 1543 8834 1088 UUNET Technologies, Inc.
7018 1327 7163 921 AT&T
1239 954 3020 672 Sprint
7132 922 6572 228 Southwestern Bell Internet Se
3908 907 1548 477 Supernet, Inc.
189 683 340 296 Genuity
11305 647 170 72 Interland Incorporated
7843 614 361 172 Adelphia Corp.
1 613 2602 415 GENUITY
4323 601 525 175 Time Warner Communications, I
18566 599 160 8 Covad Communications
852 527 1124 416 Telus Advanced Communications
705 510 273 333 UUNET Technologies, Inc.
6197 502 348 197 BellSouth Network Solutions,
209 499 2108 303 Qwest
7066 487 204 260 Virginia Polytechnic Institut
6198 468 230 178 BellSouth Network Solutions,
20115 463 194 284 Charter Communications
690 450 65 293 Merit Network
2386 406 538 234 AT&T Data Communications Serv
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 747 2172 634 UUNET - Commercial IP service
3301 303 1171 290 TeliaNet Sweden
3320 265 2004 227 Deutsche Telekom AG
719 264 307 125 LANLINK autonomous system
3215 259 834 149 France Telecom Transpac
680 232 2053 229 DFN-IP service G-WiN
8220 225 384 213 COLT Internet - International
1257 223 311 185 SWIPnet Swedish IP Network
5400 204 143 123 BT Ignite European Backbone
786 179 1874 179 The JANET IP Service
5515 179 795 150 Sonera Solution Autonomous Sy
8708 153 44 150 Romania Data Systems S.A.
3303 140 549 137 Swisscom Ltd
12302 127 18 34 MobiFon S.A.
2856 124 1315 114 BTnet UK Regional network
3246 120 384 116 Song Networks
3269 118 823 65 TELECOM ITALIA
3352 109 780 32 Ibernet, Internet Access Netw
5511 101 178 81 France Telecom
2647 97 4129 39 SITA
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
6140 296 98 107 ImpSat
7303 237 37 58 Telecom Argentina Stet-France
8151 215 350 117 UniNet S.A. de C.V.
11172 170 66 40 Servicios Alestra S.A de C.V
16814 135 9 17 NSS, S.A.
6503 130 189 93 AVANTEL, S.A.
10620 115 7 32 TVCABLE BOGOTA
11340 105 3 33 Red Universitaria Nacional
6147 99 70 21 Telefonica Del Peru
11992 86 8 36 Integrated Systems
13999 86 36 8 Mega Cable S.A. de C.V.
6535 75 5 18 Chilesat Servicios Empresari
1916 73 306 43 Fundacao de Amparo a Pesquisa
8065 73 8 19 Empresas Publicas de Medellin
15311 72 12 36 Telefonica Empresas
4270 68 18 9 Red de Interconexion Universi
11830 67 5 27 Instituto Costarricense de El
7080 64 4 1 Electronica y Comunicaciones
7927 64 5 39 Global One Venezuela
15034 62 5 32 TIBA SA
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
7132 922 694 Southwestern Bell Internet Se
18566 599 591 Covad Communications
11305 647 575 Interland Incorporated
7843 614 442 Adelphia Corp.
3908 907 430 Supernet, Inc.
4323 601 426 Time Warner Communications, I
7018 1327 406 AT&T
189 683 387 Genuity
4755 419 351 Videsh Sanchar Nigam Ltd. Aut
1221 1068 307 Telstra Pty Ltd
6197 502 305 BellSouth Network Solutions,
27364 319 301 Armstrong Cable Services
4355 394 291 EarthLink, Inc.
6198 468 290 BellSouth Network Solutions,
6347 367 287 SAVVIS Communications Corpora
1239 954 282 Sprint
376 383 267 Reseau Interordinateurs Scien
22909 276 264 Comcast Cable Corporation
17676 250 231 XTAGE CORPORATION
7066 487 227 Virginia Polytechnic Institut
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
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
172.208.0.0/14 1668 GNN Hosting Service
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
192.158.254.0/24 705 UUNET Technologies, Inc.
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 /8:20 /9:5 /10:8 /11:13 /12:53
/13:99 /14:257 /15:470 /16:7428 /17:1696 /18:3003
/19:8478 /20:8529 /21:6170 /22:9063 /23:10626 /24:69284
/25:158 /26:260 /27:56 /28:42 /29:26 /30:22
/31:0 /32:27
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
189 606 683 Genuity
18566 593 599 Covad Communications
11305 573 647 Interland Incorporated
3908 571 907 Supernet, Inc.
7018 460 1327 AT&T
702 456 747 UUNET - Commercial IP service
701 432 1543 UUNET Technologies, Inc.
690 408 450 Merit Network
7066 384 487 Virginia Polytechnic Institut
6197 374 502 BellSouth Network Solutions,
7843 372 614 Adelphia Corp.
6198 365 468 BellSouth Network Solutions,
1239 358 954 Sprint
20115 323 463 Charter Communications
27364 313 319 Armstrong Cable Services
19262 228 269 Verizon Global Networks
1 223 613 GENUITY
4355 215 394 EarthLink, Inc.
3320 207 265 Deutsche Telekom AG
705 203 510 UUNET Technologies, Inc.
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:2 12:706 13:1 15:4 16:1 17:3
20:7 24:856 25:1 32:95 38:40 40:21
44:2 57:17 61:257 62:358 63:1866 64:1942
65:1970 66:2584 67:177 68:372 69:178 80:365
81:124 128:135 129:172 130:47 131:79 132:26
134:174 135:4 136:115 137:107 138:108 139:64
140:168 141:122 142:94 143:41 144:105 145:14
146:273 147:97 148:289 149:60 150:45 151:70
152:232 153:60 154:7 155:116 156:53 157:45
158:127 159:139 160:43 161:75 162:129 163:80
164:312 165:143 166:95 167:320 168:172 169:65
170:315 171:8 192:5329 193:2480 194:1956 195:1055
196:477 198:3594 199:2713 200:2963 202:3830 203:5225
204:3004 205:2050 206:2333 207:2436 208:2601 209:2896
210:834 211:348 212:972 213:826 214:19 215:23
216:3562 217:629 218:92 219:45 220:95 221:3
End of report
