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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Wed 16 Jul, 2003
Analysis Summary
----------------
BGP routing table entries examined: 127419
Prefixes after maximum aggregation: 79470
Unique aggregates announced to Internet: 60259
Total ASes present in the Internet Routing Table: 15510
Origin-only ASes present in the Internet Routing Table: 13442
Origin ASes announcing only one prefix: 6107
Transit ASes present in the Internet Routing Table: 2068
Transit-only ASes present in the Internet Routing Table: 67
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: 15
Number of addresses announced to Internet: 1238985600
Equivalent to 73 /8s, 217 /16s and 107 /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: 56467
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 22102
Total APNIC prefixes after maximum aggregation: 12664
Prefixes being announced from the APNIC address blocks: 20529
Unique aggregates announced from the APNIC address blocks: 12361
APNIC Region origin ASes present in the Internet Routing Table: 1860
APNIC Region origin ASes announcing only one prefix: 534
APNIC Region transit ASes present in the Internet Routing Table: 300
Average APNIC Region AS path length visible: 4.9
Max APNIC Region AS path length visible: 18
Number of APNIC addresses announced to Internet: 117466656
Equivalent to 7 /8s, 0 /16s and 102 /24s
Percentage of available APNIC address space announced: 63.3
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: 77618
Total ARIN prefixes after maximum aggregation: 48341
Prefixes being announced from the ARIN address blocks: 55317
Unique aggregates announced from the ARIN address blocks: 16782
ARIN Region origin ASes present in the Internet Routing Table: 8523
ARIN Region origin ASes announcing only one prefix: 2910
ARIN Region transit ASes present in the Internet Routing Table: 823
Average ARIN Region AS path length visible: 4.7
Max ARIN Region AS path length visible: 17
Number of ARIN addresses announced to Internet: 194782464
Equivalent to 11 /8s, 156 /16s and 37 /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: 22353
Total RIPE prefixes after maximum aggregation: 16181
Prefixes being announced from the RIPE address blocks: 18823
Unique aggregates announced from the RIPE address blocks: 12484
RIPE Region origin ASes present in the Internet Routing Table: 4718
RIPE Region origin ASes announcing only one prefix: 2571
RIPE Region transit ASes present in the Internet Routing Table: 844
Average RIPE Region AS path length visible: 5.5
Max RIPE Region AS path length visible: 23
Number of RIPE addresses announced to Internet: 133786304
Equivalent to 7 /8s, 249 /16s and 106 /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: 5345
Total LACNIC prefixes after maximum aggregation: 2284
Prefixes being announced from the LACNIC address blocks: 4808
Unique aggregates announced from the LACNIC address blocks: 3086
LACNIC Region origin ASes present in the Internet Routing Table: 341
LACNIC Region origin ASes announcing only one prefix: 92
LACNIC Region transit ASes present in the Internet Routing Table: 71
Average LACNIC Region AS path length visible: 5.3
Max LACNIC Region AS path length visible: 24
Number of LACNIC addresses announced to Internet: 12852224
Equivalent to 0 /8s, 196 /16s and 28 /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 446 136 70 Videsh Sanchar Nigam Ltd. Aut
2907 374 1896 350 SINET Japan
17557 351 25 151 Pakistan Telecom
703 332 370 265 UUNET
2764 308 325 275 connect.com.au pty ltd
7474 269 306 201 Optus Communications Pty Ltd
17676 250 3862 19 XTAGE CORPORATION
3786 243 777 210 DACOM Corporation
9583 238 37 21 Satyam Infoway Ltd.,
4134 229 1960 112 Data Communications Bureau
4766 223 2476 166 Korea Internet Exchange for "
9800 190 306 55 CHINA UNICOM
9443 182 58 82 Primus Telecommunications
9498 171 11 20 BHARTI BT INTERNET LTD.
4538 168 1506 21 China Education and Research
9929 162 177 34 China Netcom Corp.
4739 141 58 130 Commerical Internet eXchange
9238 136 8 23 TATA ISP
4716 132 745 126 TTnet
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
701 1526 8815 1072 UUNET Technologies, Inc.
7018 1343 7181 927 AT&T
1239 958 2996 668 Sprint
3908 900 1517 471 Supernet, Inc.
7132 841 6591 232 Southwestern Bell Internet Se
189 685 372 308 Genuity
18566 647 160 8 Covad Communications
4323 608 526 175 Time Warner Communications, I
7843 570 374 221 Adelphia Corp.
1 569 2440 383 GENUITY
11305 549 170 72 Interland Incorporated
6197 527 367 220 BellSouth Network Solutions,
852 525 1124 417 Telus Advanced Communications
209 513 2190 300 Qwest
7066 490 204 259 Virginia Polytechnic Institut
705 487 192 308 UUNET Technologies, Inc.
6198 481 268 183 BellSouth Network Solutions,
20115 463 195 284 Charter Communications
690 448 64 294 Merit Network
2386 407 541 232 AT&T Data Communications Serv
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 1016 2155 618 UUNET - Commercial IP service
3301 291 1169 279 TeliaNet Sweden
3320 269 2004 230 Deutsche Telekom AG
719 266 307 125 LANLINK autonomous system
3215 240 801 136 France Telecom Transpac
680 232 2053 229 DFN-IP service G-WiN
8220 232 386 220 COLT Internet - International
1257 227 309 185 SWIPnet Swedish IP Network
5400 199 142 116 BT Ignite European Backbone
5515 187 795 150 Sonera Solution Autonomous Sy
786 180 1874 180 The JANET IP Service
8708 155 108 151 Romania Data Systems S.A.
3303 142 549 139 Swisscom Ltd
12302 127 18 34 MobiFon S.A.
2856 126 1315 117 BTnet UK Regional network
3246 122 373 118 Song Networks
3269 117 821 64 TELECOM ITALIA
3352 107 796 32 Ibernet, Internet Access Netw
2647 98 4129 41 SITA
5511 98 179 75 France Telecom
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
6140 298 98 106 ImpSat
7303 235 37 59 Telecom Argentina Stet-France
8151 220 350 117 UniNet S.A. de C.V.
11172 173 69 42 Servicios Alestra S.A de C.V
11340 140 4 48 Red Universitaria Nacional
16814 135 9 17 NSS, S.A.
6503 133 189 96 AVANTEL, S.A.
10620 115 7 32 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 70 5 32 Instituto Costarricense de El
4270 68 18 9 Red de Interconexion Universi
7080 64 4 1 Electronica y Comunicaciones
7927 64 6 39 Global One Venezuela
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 647 639 Covad Communications
7132 841 609 Southwestern Bell Internet Se
11305 549 477 Interland Incorporated
4323 608 433 Time Warner Communications, I
3908 900 429 Supernet, Inc.
7018 1343 416 AT&T
702 1016 398 UUNET - Commercial IP service
189 685 377 Genuity
4755 446 376 Videsh Sanchar Nigam Ltd. Aut
7843 570 349 Adelphia Corp.
1221 1048 308 Telstra Pty Ltd
6197 527 307 BellSouth Network Solutions,
6198 481 298 BellSouth Network Solutions,
4355 405 294 EarthLink, Inc.
1239 958 290 Sprint
27364 301 283 Armstrong Cable Services
6347 363 280 SAVVIS Communications Corpora
22909 279 265 Comcast Cable Corporation
25844 258 256 Skadden, Arps, Slate, Meagher
376 374 250 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
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 /15:476 /16:7430 /17:1730 /18:3061
/19:8621 /20:8643 /21:6317 /22:9213 /23:10822 /24:69993
/25:177 /26:297 /27:71 /28:39 /29:22 /30:23
/31:0 /32:27
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
702 712 1016 UUNET - Commercial IP service
18566 641 647 Covad Communications
189 605 685 Genuity
3908 575 900 Supernet, Inc.
11305 475 549 Interland Incorporated
7018 474 1343 AT&T
701 433 1526 UUNET Technologies, Inc.
690 406 448 Merit Network
6197 398 527 BellSouth Network Solutions,
7066 386 490 Virginia Polytechnic Institut
6198 375 481 BellSouth Network Solutions,
1239 362 958 Sprint
20115 320 463 Charter Communications
7843 318 570 Adelphia Corp.
27364 295 301 Armstrong Cable Services
25844 258 258 Skadden, Arps, Slate, Meagher
4355 216 405 EarthLink, Inc.
1 213 569 GENUITY
3320 210 269 Deutsche Telekom AG
705 205 487 UUNET Technologies, Inc.
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:2 12:701 13:1 15:4 16:1 17:3
20:6 24:844 25:1 32:98 38:42 40:22
44:2 57:15 61:262 62:374 63:1883 64:1783
65:1970 66:2565 67:198 68:368 69:200 80:392
81:119 82:6 128:144 129:227 130:58 131:81
132:25 134:175 135:7 136:120 137:117 138:114
139:61 140:167 141:117 142:94 143:44 144:99
145:13 146:281 147:65 148:291 149:62 150:95
151:70 152:233 153:101 154:3 155:119 156:56
157:46 158:122 159:140 160:45 161:75 162:376
163:77 164:321 165:139 166:96 167:318 168:173
169:111 170:318 171:8 192:5341 193:2587 194:1984
195:1130 196:471 198:3573 199:2726 200:2956 202:3919
203:5271 204:2984 205:2052 206:2319 207:2434 208:2590
209:2866 210:863 211:363 212:994 213:871 214:19
215:23 216:3450 217:675 218:95 219:66 220:97
221:8
End of report
