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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 25 Apr, 2003
Analysis Summary
----------------
BGP routing table entries examined: 125034
Prefixes after maximum aggregation: 78339
Unique aggregates announced to Internet: 59209
Total ASes present in the Internet Routing Table: 15085
Origin-only ASes present in the Internet Routing Table: 13083
Origin ASes announcing only one prefix: 5929
Transit ASes present in the Internet Routing Table: 2002
Transit-only ASes present in the Internet Routing Table: 74
Average AS path length visible in the Internet Routing Table: 4.8
Max AS path length visible: 255
Illegal AS announcements present in the Routing Table: 4
Non-routable prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 20
Number of addresses announced to Internet: 1225460768
Equivalent to 73 /8s, 11 /16s and 12 /24s
Percentage of available address space announced: 33.1
Percentage of allocated address space announced: 59.1
Percentage of available address space allocated: 55.9
Total number of prefixes smaller than registry allocations: 54233
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 21127
Total APNIC prefixes after maximum aggregation: 12280
Prefixes being announced from the APNIC address blocks: 19587
Unique aggregates announced from the APNIC address blocks: 11959
APNIC Region origin ASes present in the Internet Routing Table: 1785
APNIC Region origin ASes announcing only one prefix: 522
APNIC Region transit ASes present in the Internet Routing Table: 298
Average APNIC Region AS path length visible: 5.0
Max APNIC Region AS path length visible: 17
Number of APNIC addresses announced to Internet: 110650848
Equivalent to 6 /8s, 152 /16s and 101 /24s
Percentage of available APNIC address space announced: 59.6
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: 77124
Total ARIN prefixes after maximum aggregation: 48056
Prefixes being announced from the ARIN address blocks: 55210
Unique aggregates announced from the ARIN address blocks: 16616
ARIN Region origin ASes present in the Internet Routing Table: 8361
ARIN Region origin ASes announcing only one prefix: 2857
ARIN Region transit ASes present in the Internet Routing Table: 799
Average ARIN Region AS path length visible: 4.6
Max ARIN Region AS path length visible: 17
Number of ARIN addresses announced to Internet: 191099136
Equivalent to 11 /8s, 99 /16s and 241 /24s
Percentage of available ARIN address space announced: 71.2
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: 21450
Total RIPE prefixes after maximum aggregation: 15776
Prefixes being announced from the RIPE address blocks: 18002
Unique aggregates announced from the RIPE address blocks: 12057
RIPE Region origin ASes present in the Internet Routing Table: 4533
RIPE Region origin ASes announcing only one prefix: 2462
RIPE Region transit ASes present in the Internet Routing Table: 807
Average RIPE Region AS path length visible: 5.4
Max RIPE Region AS path length visible: 16
Number of RIPE addresses announced to Internet: 129303424
Equivalent to 7 /8s, 181 /16s and 3 /24s
Percentage of available RIPE address space announced: 70.1
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: 5329
Total LACNIC prefixes after maximum aggregation: 2227
Prefixes being announced from the LACNIC address blocks: 4745
Unique aggregates announced from the LACNIC address blocks: 2931
LACNIC Region origin ASes present in the Internet Routing Table: 334
LACNIC Region origin ASes announcing only one prefix: 88
LACNIC Region transit ASes present in the Internet Routing Table: 67
Average LACNIC Region AS path length visible: 5.2
Max LACNIC Region AS path length visible: 25
Number of LACNIC addresses announced to Internet: 12482048
Equivalent to 0 /8s, 190 /16s and 118 /24s
Percentage of available LACNIC address space announced: 37.2
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 1101 1104 789 Telstra Pty Ltd
4755 415 136 75 Videsh Sanchar Nigam Ltd. Aut
703 398 383 312 UUNET
2907 385 1976 362 SINET Japan
17557 376 28 138 Pakistan Telecom
2764 322 341 290 connect.com.au pty ltd
4814 287 85 22 China Telecom (Group)
7474 270 276 206 Optus Communications Pty Ltd
17676 244 3766 22 XTAGE CORPORATION
3786 242 773 209 DACOM Corporation
4134 224 2014 114 Data Communications Bureau
9583 220 33 14 Satyam Infoway Ltd.,
4766 214 2078 160 Korea Internet Exchange for "
9443 179 58 78 Primus Telecommunications
9800 177 250 55 CHINA UNICOM
9238 140 8 17 TATA ISP
4739 130 57 119 Commerical Internet eXchange
9498 129 9 12 BHARTI BT INTERNET LTD.
9768 127 384 64 Korea Telecom
4716 126 729 120 TTnet
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
701 1577 8923 1112 UUNET Technologies, Inc.
7018 1349 7164 937 AT&T
7132 959 6476 209 Southwestern Bell Internet Se
1239 958 3095 676 Sprint
3908 919 1570 470 Supernet, Inc.
4151 908 691 60 USDA
1 732 2749 465 GENUITY
7843 729 408 182 Adelphia Corp.
189 704 341 289 Genuity
4323 576 514 169 Time Warner Communications, I
852 547 1110 430 Telus Advanced Communications
18566 546 144 5 Covad Communications
705 529 278 234 UUNET Technologies, Inc.
2386 514 482 276 AT&T Data Communications Serv
3561 513 2357 335 Cable & Wireless USA
690 494 72 312 Merit Network
209 492 2120 293 Qwest
7066 481 204 257 Virginia Polytechnic Institut
6197 480 340 196 BellSouth Network Solutions,
20115 475 189 295 Charter Communications
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 774 2186 644 UUNET - Commercial IP service
3301 309 1173 299 TeliaNet Sweden
3215 303 851 175 France Telecom Transpac
3320 265 2004 225 Deutsche Telekom AG
680 231 2051 228 DFN-IP service G-WiN
1257 227 327 189 SWIPnet Swedish IP Network
5400 204 112 114 BT Ignite European Backbone
8220 200 365 189 COLT Internet - International
719 197 307 125 LANLINK autonomous system
5515 196 779 168 Sonera Solution Autonomous Sy
786 180 1874 180 The JANET IP Service
20858 164 17 3 This AS will be used to conne
8708 155 44 151 Romania Data Systems S.A.
3303 141 517 140 Swisscom Ltd
12302 127 18 34 MobiFon S.A.
2856 120 1298 110 BTnet UK Regional network
3269 112 755 63 TELECOM ITALIA
3246 109 383 106 Song Networks
3352 108 750 31 Ibernet, Internet Access Netw
2874 96 85 39 Global One Services AB
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
6140 294 99 105 ImpSat
7303 253 36 66 Telecom Argentina Stet-France
8151 216 334 118 UniNet S.A. de C.V.
11172 163 66 33 Servicios Alestra S.A de C.V
6503 154 207 108 AVANTEL, S.A.
16814 139 9 18 NSS, S.A.
10620 113 7 33 TVCABLE BOGOTA
6147 91 62 20 Telefonica Del Peru
11992 89 8 37 Integrated Systems
11340 82 2 26 Red Universitaria Nacional
1916 75 306 45 Fundacao de Amparo a Pesquisa
8065 75 6 15 Empresas Publicas de Medellin
13999 74 36 8 Mega Cable S.A. de C.V.
6535 73 5 22 Chilesat Servicios Empresari
15311 72 28 36 Telefonica Empresas
11830 66 4 26 Instituto Costarricense de El
4270 65 18 10 Red de Interconexion Universi
7080 64 4 1 Electronica y Comunicaciones
7927 64 5 39 Global One Venezuela
7984 61 11 41 Global One Colombia
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
4151 908 848 USDA
7132 959 750 Southwestern Bell Internet Se
7843 729 547 Adelphia Corp.
18566 546 541 Covad Communications
3908 919 449 Supernet, Inc.
189 704 415 Genuity
7018 1349 412 AT&T
4323 576 407 Time Warner Communications, I
4755 415 340 Videsh Sanchar Nigam Ltd. Aut
1221 1101 312 Telstra Pty Ltd
705 529 295 UUNET Technologies, Inc.
6347 371 292 SAVVIS Communications Corpora
6197 480 284 BellSouth Network Solutions,
22927 297 284 TELEFONICA DE ARGENTINA
6198 458 283 BellSouth Network Solutions,
1239 958 282 Sprint
4355 388 279 EarthLink, Inc.
1 732 267 GENUITY
4814 287 265 China Telecom (Group)
27364 270 252 Armstrong Cable Services
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
64515 PRIVATE 202.174.42.0/24 17909 AirNet Commercial Au
64514 PRIVATE 203.28.47.0/24 17909 AirNet Commercial Au
64512 PRIVATE 203.34.180.0/24 17909 AirNet Commercial Au
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
192.83.16.0/20 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
192.158.254.0/24 705 UUNET Technologies, Inc.
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 /9:7 /10:8 /11:13 /12:50
/13:93 /14:251 /15:463 /16:7386 /17:1666 /18:2964
/19:8371 /20:8343 /21:6028 /22:8943 /23:10537 /24:69430
/25:137 /26:186 /27:53 /28:25 /29:13 /30:24
/31:0 /32:25
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
189 625 704 Genuity
3908 575 919 Supernet, Inc.
18566 540 546 Covad Communications
702 481 774 UUNET - Commercial IP service
7018 477 1349 AT&T
7843 471 729 Adelphia Corp.
690 443 494 Merit Network
701 429 1577 UUNET Technologies, Inc.
7066 380 481 Virginia Polytechnic Institut
6198 361 458 BellSouth Network Solutions,
6197 358 480 BellSouth Network Solutions,
1239 356 958 Sprint
20115 341 475 Charter Communications
11305 311 334 Interland Incorporated
2386 308 514 AT&T Data Communications Serv
4814 274 287 China Telecom (Group)
27364 263 270 Armstrong Cable Services
1 257 732 GENUITY
22927 235 297 TELEFONICA DE ARGENTINA
3215 226 303 France Telecom Transpac
Number of /24s announced per /8 block (Global)
----------------------------------------------
12:687 13:1 15:4 17:3 20:8 24:825
25:1 32:85 38:61 40:18 44:2 55:1
57:16 61:429 62:535 63:1902 64:1558 65:1932
66:2390 67:168 68:358 69:114 80:341 81:129
128:157 129:178 130:45 131:82 132:11 133:2
134:155 135:4 136:113 137:109 138:109 139:66
140:147 141:105 142:95 143:44 144:102 145:15
146:270 147:94 148:278 149:72 150:43 151:68
152:246 153:57 154:2 155:108 156:46 157:40
158:124 159:144 160:37 161:74 162:142 163:78
164:306 165:140 166:84 167:331 168:407 169:57
170:317 171:7 192:5349 193:2412 194:1991 195:1004
196:464 198:3564 199:3587 200:2952 202:3775 203:5186
204:3071 205:2005 206:2424 207:2400 208:2648 209:2843
210:775 211:311 212:963 213:797 214:21 215:21
216:3363 217:622 218:90 219:21 220:92
End of report
-----
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