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Weekly Routing Table Report
This is an automated weekly mailing describing the state of the Internet
Routing Table as seen from APNIC's router in Japan.
Daily listings are sent to bgp-stats at lists.apnic.net
For a graphical representation, please see http://www.apnic.net/stats/bgp.
If you have any comments please contact Philip Smith <pfs at cisco.com>.
Routing Table Report 20:00 +10GMT Fri 04 Apr, 2003
Analysis Summary
----------------
BGP routing table entries examined: 123590
Prefixes after maximum aggregation: 78340
Unique aggregates announced to Internet: 58939
Total ASes present in the Internet Routing Table: 14931
Origin-only ASes present in the Internet Routing Table: 12943
Origin ASes announcing only one prefix: 5863
Transit ASes present in the Internet Routing Table: 1988
Transit-only ASes present in the Internet Routing Table: 72
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: 5
Non-routable prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 22
Number of addresses announced to Internet: 1222409184
Equivalent to 72 /8s, 220 /16s and 123 /24s
Percentage of available address space announced: 33.0
Percentage of allocated address space announced: 59.9
Percentage of available address space allocated: 55.0
Total number of prefixes smaller than registry allocations: 58485
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 20488
Total APNIC prefixes after maximum aggregation: 12277
Prefixes being announced from the APNIC address blocks: 18943
Unique aggregates announced from the APNIC address blocks: 11702
APNIC Region origin ASes present in the Internet Routing Table: 1762
APNIC Region origin ASes announcing only one prefix: 522
APNIC Region transit ASes present in the Internet Routing Table: 285
Average APNIC Region AS path length visible: 4.8
Max APNIC Region AS path length visible: 15
Number of APNIC addresses announced to Internet: 108879360
Equivalent to 6 /8s, 125 /16s and 94 /24s
Percentage of available APNIC address space announced: 64.5
APNIC AS Blocks 4608 - 4864, 7467 - 7722, 9216 - 10239
17408 - 18431, 23552 - 24575
APNIC Address Blocks 61/8, 202/7, 210/7, 218/7, 220/7 and 222/8
ARIN Region Analysis Summary
----------------------------
Prefixes being announced by ARIN Region ASes: 76495
Total ARIN prefixes after maximum aggregation: 48164
Prefixes being announced from the ARIN address blocks: 54710
Unique aggregates announced from the ARIN address blocks: 16696
ARIN Region origin ASes present in the Internet Routing Table: 8289
ARIN Region origin ASes announcing only one prefix: 2804
ARIN Region transit ASes present in the Internet Routing Table: 795
Average ARIN Region AS path length visible: 4.5
Max ARIN Region AS path length visible: 17
Number of ARIN addresses announced to Internet: 190081984
Equivalent to 11 /8s, 84 /16s and 107 /24s
Percentage of available ARIN address space announced: 70.8
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: 21353
Total RIPE prefixes after maximum aggregation: 15689
Prefixes being announced from the RIPE address blocks: 17870
Unique aggregates announced from the RIPE address blocks: 11931
RIPE Region origin ASes present in the Internet Routing Table: 4480
RIPE Region origin ASes announcing only one prefix: 2452
RIPE Region transit ASes present in the Internet Routing Table: 811
Average RIPE Region AS path length visible: 5.3
Max RIPE Region AS path length visible: 17
Number of RIPE addresses announced to Internet: 128463104
Equivalent to 7 /8s, 168 /16s and 49 /24s
Percentage of available RIPE address space announced: 76.6
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: 5249
Total LACNIC prefixes after maximum aggregation: 2210
Prefixes being announced from the LACNIC address blocks: 4645
Unique aggregates announced from the LACNIC address blocks: 2939
LACNIC Region origin ASes present in the Internet Routing Table: 329
LACNIC Region origin ASes announcing only one prefix: 85
LACNIC Region transit ASes present in the Internet Routing Table: 67
Average LACNIC Region AS path length visible: 5.1
Max LACNIC Region AS path length visible: 15
Number of LACNIC addresses announced to Internet: 12407040
Equivalent to 0 /8s, 189 /16s and 81 /24s
Percentage of available LACNIC address space announced: 74.0
LACNIC AS Blocks 26592 - 26623, 27648 - 28671
LACNIC Address Blocks 200/8
APNIC Region per AS prefix count summary
----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
1221 1101 1105 804 Telstra Pty Ltd
703 397 367 313 UUNET
2907 381 1976 360 SINET Japan
2764 318 340 286 connect.com.au pty ltd
7474 271 276 207 Optus Communications Pty Ltd
4814 269 79 15 China Telecom (Group)
3786 245 775 212 DACOM Corporation
4134 240 2051 127 Data Communications Bureau
17676 237 3654 25 XTAGE CORPORATION
4755 230 135 75 Videsh Sanchar Nigam Ltd. Aut
17557 228 17 119 Pakistan Telecom
9583 219 33 14 Satyam Infoway Ltd.,
4766 211 2078 158 Korea Internet Exchange for "
9443 179 58 78 Primus Telecommunications
9800 174 226 48 CHINA UNICOM
9238 134 8 21 TATA ISP
4716 128 731 122 TTnet
4739 128 57 117 Commerical Internet eXchange
9498 127 9 10 BHARTI BT INTERNET LTD.
9768 125 384 64 Korea Telecom
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
701 1581 8873 1117 UUNET Technologies, Inc.
7018 1352 7153 936 AT&T
3908 979 1571 475 Supernet, Inc.
1239 968 3139 684 Sprint
1 773 2845 490 GENUITY
7132 727 6084 408 Southwestern Bell Internet Se
189 706 341 291 Genuity
7843 624 400 166 Adelphia Corp.
4151 612 691 58 USDA
3561 587 2353 338 Cable & Wireless USA
4323 566 491 178 Time Warner Communications, I
852 550 1107 433 Telus Advanced Communications
18566 534 124 7 Covad Communications
209 529 2089 337 Qwest
690 502 73 318 Merit Network
2386 500 481 271 AT&T Data Communications Serv
7066 485 204 255 Virginia Polytechnic Institut
6197 475 338 196 BellSouth Network Solutions,
705 463 188 207 UUNET Technologies, Inc.
6198 458 226 178 BellSouth Network Solutions,
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 782 2221 649 UUNET - Commercial IP service
3215 316 851 175 France Telecom Transpac
3301 311 1174 301 TeliaNet Sweden
3320 267 1996 230 Deutsche Telekom AG
680 232 2053 229 DFN-IP service G-WiN
1257 216 328 190 SWIPnet Swedish IP Network
719 195 307 125 LANLINK autonomous system
5515 195 779 168 Sonera Solution Autonomous Sy
5400 194 93 108 BT Ignite European Backbone
786 180 1874 180 The JANET IP Service
20858 155 17 3 This AS will be used to conne
8708 154 42 150 Romania Data Systems S.A.
3303 145 517 144 Swisscom Ltd
8220 137 215 128 COLT Internet - International
12302 124 18 31 MobiFon S.A.
2856 119 1298 109 BTnet UK Regional network
3269 112 754 62 TELECOM ITALIA
3246 110 384 107 Song Networks
3233 107 11 12 RNC - Romanian Natioanal R&D
3352 105 734 32 Ibernet, Internet Access Netw
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
6140 295 99 106 ImpSat
7303 241 36 65 Telecom Argentina Stet-France
8151 213 333 115 UniNet S.A. de C.V.
11172 164 66 33 Servicios Alestra S.A de C.V
6503 156 207 109 AVANTEL, S.A.
16814 139 9 18 NSS, S.A.
11340 109 3 37 Red Universitaria Nacional
10620 107 7 31 TVCABLE BOGOTA
11992 90 9 36 Integrated Systems
6147 77 62 20 Telefonica Del Peru
6535 73 5 21 Chilesat Servicios Empresari
8065 73 6 18 Empresas Publicas de Medellin
15311 71 27 36 Telefonica Empresas
1916 70 304 44 Fundacao de Amparo a Pesquisa
4270 69 18 10 Red de Interconexion Universi
13999 68 36 8 Mega Cable S.A. de C.V.
11830 65 4 26 Instituto Costarricense de El
7080 64 4 1 Electronica y Comunicaciones
7927 64 5 39 Global One Venezuela
7984 61 11 40 Global One Colombia
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
4151 612 554 USDA
18566 534 527 Covad Communications
3908 979 504 Supernet, Inc.
7843 624 458 Adelphia Corp.
7018 1352 416 AT&T
189 706 415 Genuity
4323 566 388 Time Warner Communications, I
7132 727 319 Southwestern Bell Internet Se
1221 1101 297 Telstra Pty Ltd
6347 370 288 SAVVIS Communications Corpora
1239 968 284 Sprint
1 773 283 GENUITY
22927 295 281 TELEFONICA DE ARGENTINA
6198 458 280 BellSouth Network Solutions,
6197 475 279 BellSouth Network Solutions,
4355 379 277 EarthLink, Inc.
705 463 256 UUNET Technologies, Inc.
4814 269 254 China Telecom (Group)
3561 587 249 Cable & Wireless USA
27364 266 248 Armstrong Cable Services
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
64500 RESERVED 192.83.252.0/24 297 NASA Science Network
1877 UNALLOCATED 192.108.199.0/24 1880 Stupi, house man's p
65501 PRIVATE 200.73.26.0/24 18747 IFX Communication Ve
65000 PRIVATE 202.172.216.0/24 9226 AS for Singapore Int
65000 PRIVATE 202.172.217.0/24 9226 AS for Singapore Int
Advertised Unallocated Addresses
--------------------------------
Network Origin AS Description
39.0.0.0/8 4554 Exchange Point Blocks
132.0.0.0/10 568 DISO-UNRRA
135.0.0.0/13 10455 Lucent Technologies
137.0.0.0/13 568 DISO-UNRRA
158.0.0.0/13 568 DISO-UNRRA
192.16.52.0/24 1239 Sprint
192.43.230.0/24 4738 South Australian Academic Res
192.44.0.0/19 702 UUNET - Commercial IP service
192.75.199.0/24 25745 Alentus Corporation
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
192.136.135.0/24 1239 Sprint
192.153.136.0/21 568 DISO-UNRRA
192.158.249.0/24 27319 INTERNET SOFTWARE CONSORTIUM,
192.158.251.0/24 27321 INTERNET SOFTWARE CONSORTIUM,
192.172.0.0/19 568 DISO-UNRRA
192.243.36.0/23 2044 AUSNet, Inc.
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 /12:47
/13:92 /14:248 /15:460 /16:7375 /17:1644 /18:2953
/19:8262 /20:8192 /21:5911 /22:8840 /23:10653 /24:68292
/25:173 /26:192 /27:52 /28:34 /29:20 /30:60
/31:0 /32:46
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
189 627 706 Genuity
3908 615 979 Supernet, Inc.
18566 529 534 Covad Communications
702 485 782 UUNET - Commercial IP service
701 469 1581 UUNET Technologies, Inc.
7018 468 1352 AT&T
690 451 502 Merit Network
7066 384 485 Virginia Polytechnic Institut
7843 374 624 Adelphia Corp.
1239 373 968 Sprint
6198 362 458 BellSouth Network Solutions,
6197 354 475 BellSouth Network Solutions,
11305 317 340 Interland Incorporated
2386 299 500 AT&T Data Communications Serv
20115 298 425 Charter Communications
22927 294 295 TELEFONICA DE ARGENTINA
6140 282 295 ImpSat
1 277 773 GENUITY
27364 259 266 Armstrong Cable Services
7303 240 241 Telecom Argentina Stet-France
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:2 12:670 13:1 15:4 17:2 20:10
24:789 25:1 32:86 38:65 40:18 44:2
55:1 57:17 61:461 62:517 63:1888 64:1516
65:1907 66:2338 67:176 68:322 69:79 80:333
81:123 128:150 129:176 130:45 131:83 132:11
133:11 134:146 135:4 136:113 137:111 138:105
139:66 140:149 141:88 142:94 143:48 144:101
145:16 146:268 147:90 148:278 149:73 150:43
151:66 152:248 153:53 154:2 155:119 156:46
157:44 158:124 159:140 160:34 161:60 162:129
163:78 164:309 165:135 166:75 167:325 168:408
169:56 170:314 171:6 192:5354 193:2399 194:1986
195:991 196:478 198:3563 199:3293 200:2884 202:3541
203:4995 204:3064 205:2015 206:2390 207:2395 208:2668
209:2916 210:736 211:337 212:1015 213:773 214:20
215:21 216:3326 217:613 218:83 219:11 220:57
End of report
-----
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