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April 2003
- 2 participants
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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(a)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(a)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
1
0
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(a)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(a)cisco.com>.
Routing Table Report 20:00 +10GMT Fri 18 Apr, 2003
Analysis Summary
----------------
BGP routing table entries examined: 124146
Prefixes after maximum aggregation: 78054
Unique aggregates announced to Internet: 58833
Total ASes present in the Internet Routing Table: 15026
Origin-only ASes present in the Internet Routing Table: 13037
Origin ASes announcing only one prefix: 5919
Transit ASes present in the Internet Routing Table: 1989
Transit-only ASes present in the Internet Routing Table: 72
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: 3
Non-routable prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 20
Number of addresses announced to Internet: 1224195200
Equivalent to 72 /8s, 247 /16s and 188 /24s
Percentage of available address space announced: 33.0
Percentage of allocated address space announced: 59.0
Percentage of available address space allocated: 55.9
Total number of prefixes smaller than registry allocations: 53849
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 20795
Total APNIC prefixes after maximum aggregation: 12228
Prefixes being announced from the APNIC address blocks: 19236
Unique aggregates announced from the APNIC address blocks: 11885
APNIC Region origin ASes present in the Internet Routing Table: 1769
APNIC Region origin ASes announcing only one prefix: 517
APNIC Region transit ASes present in the Internet Routing Table: 292
Average APNIC Region AS path length visible: 4.9
Max APNIC Region AS path length visible: 16
Number of APNIC addresses announced to Internet: 110371808
Equivalent to 6 /8s, 148 /16s and 35 /24s
Percentage of available APNIC address space announced: 59.5
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: 76681
Total ARIN prefixes after maximum aggregation: 47860
Prefixes being announced from the ARIN address blocks: 54889
Unique aggregates announced from the ARIN address blocks: 16322
ARIN Region origin ASes present in the Internet Routing Table: 8328
ARIN Region origin ASes announcing only one prefix: 2848
ARIN Region transit ASes present in the Internet Routing Table: 788
Average ARIN Region AS path length visible: 4.6
Max ARIN Region AS path length visible: 17
Number of ARIN addresses announced to Internet: 190613760
Equivalent to 11 /8s, 92 /16s and 137 /24s
Percentage of available ARIN address space announced: 71.0
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: 21379
Total RIPE prefixes after maximum aggregation: 15741
Prefixes being announced from the RIPE address blocks: 17931
Unique aggregates announced from the RIPE address blocks: 12023
RIPE Region origin ASes present in the Internet Routing Table: 4523
RIPE Region origin ASes announcing only one prefix: 2465
RIPE Region transit ASes present in the Internet Routing Table: 810
Average RIPE Region AS path length visible: 5.3
Max RIPE Region AS path length visible: 16
Number of RIPE addresses announced to Internet: 129020288
Equivalent to 7 /8s, 176 /16s and 177 /24s
Percentage of available RIPE address space announced: 69.9
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: 5289
Total LACNIC prefixes after maximum aggregation: 2225
Prefixes being announced from the LACNIC address blocks: 4708
Unique aggregates announced from the LACNIC address blocks: 2975
LACNIC Region origin ASes present in the Internet Routing Table: 334
LACNIC Region origin ASes announcing only one prefix: 89
LACNIC Region transit ASes present in the Internet Routing Table: 68
Average LACNIC Region AS path length visible: 5.2
Max LACNIC Region AS path length visible: 24
Number of LACNIC addresses announced to Internet: 12435200
Equivalent to 0 /8s, 189 /16s and 191 /24s
Percentage of available LACNIC address space announced: 37.1
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 1101 1104 793 Telstra Pty Ltd
703 396 381 310 UUNET
2907 379 1974 358 SINET Japan
17557 372 27 138 Pakistan Telecom
2764 322 341 290 connect.com.au pty ltd
4814 273 79 15 China Telecom (Group)
7474 272 276 208 Optus Communications Pty Ltd
3786 243 773 210 DACOM Corporation
17676 243 3750 22 XTAGE CORPORATION
4755 234 136 77 Videsh Sanchar Nigam Ltd. Aut
4134 225 2006 114 Data Communications Bureau
9583 220 33 14 Satyam Infoway Ltd.,
4766 212 2078 157 Korea Internet Exchange for "
9443 180 58 79 Primus Telecommunications
9800 175 244 53 CHINA UNICOM
9238 139 8 17 TATA ISP
4739 130 57 119 Commerical Internet eXchange
4716 128 731 122 TTnet
9498 126 9 10 BHARTI BT INTERNET LTD.
9768 126 384 64 Korea Telecom
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
701 1580 8906 1103 UUNET Technologies, Inc.
7018 1366 7175 947 AT&T
1239 969 3120 684 Sprint
7132 957 6444 209 Southwestern Bell Internet Se
3908 937 1571 477 Supernet, Inc.
4151 769 690 61 USDA
1 754 2770 481 GENUITY
189 705 341 290 Genuity
7843 684 402 178 Adelphia Corp.
4323 573 514 166 Time Warner Communications, I
852 549 1110 430 Telus Advanced Communications
18566 540 128 6 Covad Communications
705 529 278 234 UUNET Technologies, Inc.
2386 511 483 268 AT&T Data Communications Serv
3561 509 2341 333 Cable & Wireless USA
209 498 2137 301 Qwest
690 494 72 312 Merit Network
7066 485 204 255 Virginia Polytechnic Institut
6197 480 339 195 BellSouth Network Solutions,
6198 457 226 175 BellSouth Network Solutions,
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 773 2186 643 UUNET - Commercial IP service
3215 312 851 175 France Telecom Transpac
3301 305 1172 295 TeliaNet Sweden
3320 264 2004 225 Deutsche Telekom AG
680 231 2051 228 DFN-IP service G-WiN
1257 216 327 190 SWIPnet Swedish IP Network
5400 199 97 110 BT Ignite European Backbone
8220 199 364 188 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 157 44 152 Romania Data Systems S.A.
3303 142 517 141 Swisscom Ltd
12302 126 18 33 MobiFon S.A.
2856 120 1298 110 BTnet UK Regional network
3269 112 755 63 TELECOM ITALIA
3246 109 383 106 Song Networks
3352 106 734 32 Ibernet, Internet Access Netw
3233 105 11 12 RNC - Romanian Natioanal R&D
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
6140 294 99 105 ImpSat
7303 247 36 65 Telecom Argentina Stet-France
8151 216 334 118 UniNet S.A. de C.V.
11172 162 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
11340 106 3 34 Red Universitaria Nacional
6147 90 62 20 Telefonica Del Peru
11992 89 8 37 Integrated Systems
8065 76 6 15 Empresas Publicas de Medellin
1916 75 306 45 Fundacao de Amparo a Pesquisa
6535 74 5 19 Chilesat Servicios Empresari
13999 74 36 8 Mega Cable S.A. de C.V.
15311 72 28 36 Telefonica Empresas
4270 68 18 10 Red de Interconexion Universi
11830 66 4 26 Instituto Costarricense de El
7080 64 4 1 Electronica y Comunicaciones
7927 64 5 39 Global One Venezuela
7984 63 11 42 Global One Colombia
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
7132 957 748 Southwestern Bell Internet Se
4151 769 708 USDA
18566 540 534 Covad Communications
7843 684 506 Adelphia Corp.
3908 937 460 Supernet, Inc.
7018 1366 419 AT&T
189 705 415 Genuity
4323 573 407 Time Warner Communications, I
1221 1101 308 Telstra Pty Ltd
705 529 295 UUNET Technologies, Inc.
6347 365 286 SAVVIS Communications Corpora
1239 969 285 Sprint
6197 480 285 BellSouth Network Solutions,
6198 457 282 BellSouth Network Solutions,
22927 296 282 TELEFONICA DE ARGENTINA
4355 384 275 EarthLink, Inc.
1 754 273 GENUITY
4814 273 258 China Telecom (Group)
27364 270 252 Armstrong Cable Services
2386 511 243 AT&T Data Communications Serv
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
1877 UNALLOCATED 192.108.201.0/24 1880 Stupi, house man's p
65501 PRIVATE 200.73.26.0/24 18747 IFX Communication Ve
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 /9:4 /10:8 /11:13 /12:50
/13:93 /14:251 /15:465 /16:7382 /17:1646 /18:2956
/19:8335 /20:8266 /21:5951 /22:8859 /23:10554 /24:68796
/25:164 /26:193 /27:52 /28:25 /29:13 /30:24
/31:0 /32:28
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
189 626 705 Genuity
3908 593 937 Supernet, Inc.
18566 534 540 Covad Communications
702 480 773 UUNET - Commercial IP service
7018 478 1366 AT&T
690 443 494 Merit Network
701 439 1580 UUNET Technologies, Inc.
7843 429 684 Adelphia Corp.
7066 384 485 Virginia Polytechnic Institut
1239 364 969 Sprint
6198 360 457 BellSouth Network Solutions,
6197 358 480 BellSouth Network Solutions,
11305 318 341 Interland Incorporated
2386 308 511 AT&T Data Communications Serv
20115 295 426 Charter Communications
1 266 754 GENUITY
4814 263 273 China Telecom (Group)
27364 263 270 Armstrong Cable Services
3215 235 312 France Telecom Transpac
22927 235 296 TELEFONICA DE ARGENTINA
Number of /24s announced per /8 block (Global)
----------------------------------------------
12:675 13:1 15:4 17:3 20:9 24:816
25:1 32:85 38:64 40:19 44:2 55:1
57:16 61:431 62:523 63:1886 64:1529 65:1928
66:2365 67:163 68:358 69:110 80:335 81:120
128:153 129:177 130:45 131:82 132:10 133:2
134:154 135:4 136:112 137:111 138:108 139:66
140:147 141:92 142:95 143:45 144:113 145:14
146:270 147:93 148:276 149:72 150:44 151:68
152:245 153:57 154:2 155:106 156:45 157:38
158:123 159:143 160:37 161:75 162:137 163:77
164:313 165:140 166:76 167:328 168:406 169:57
170:314 171:7 192:5346 193:2428 194:1995 195:990
196:458 198:3565 199:3457 200:2934 202:3703 203:5067
204:3070 205:2003 206:2403 207:2406 208:2651 209:2818
210:748 211:339 212:985 213:787 214:21 215:21
216:3299 217:624 218:86 219:12 220:57
End of report
1
0
This report has been generated at Fri Apr 11 21:46:50 2003 AEST.
The report analyses the BGP Routing Table of an AS4637 (Reach) router
and generates a report on aggregation potential within the table.
Check http://www.cidr-report.org/as4637 for a current version of this report.
Recent Table History
Date Prefixes CIDR Agg
04-04-03 121205 86530
05-04-03 121077 86591
06-04-03 120820 86365
07-04-03 120917 86463
08-04-03 121020 86473
09-04-03 121144 86561
10-04-03 120942 86620
11-04-03 121008 86701
AS Summary
14913 Number of ASes in routing system
5884 Number of ASes announcing only one prefix
1564 Largest number of prefixes announced by an AS
AS701 : ALTERNET-AS UUNET Technologies, Inc.
73154560 Largest address span announced by an AS (/32s)
AS568 : SUMNET-AS DISO-UNRRA
Aggregation Summary
The algorithm used in this report proposes aggregation only
when there is a precise match using the AS path, so as
to preserve traffic transit policies. Aggregation is also
proposed across non-advertised address space ('holes').
--- 11Apr03 ---
ASnum NetsNow NetsAggr NetGain % Gain Description
Table 121213 86696 34517 28.5% All ASes
AS4151 691 75 616 89.1% USDA-1 USDA
AS7843 642 188 454 70.7% ADELPHIA-AS Adelphia Corp.
AS701 1564 1111 453 29.0% ALTERNET-AS UUNET
Technologies, Inc.
AS4323 567 167 400 70.5% TW-COMM Time Warner
Communications, Inc.
AS7132 802 414 388 48.4% SBIS-AS SBC Internet Services
- Southwest
AS3908 911 529 382 41.9% SUPERNETASBLK SuperNet, Inc.
AS7018 1351 976 375 27.8% ATT-INTERNET4 AT&T WorldNet
Services
AS1221 1107 797 310 28.0% ASN-TELSTRA Telstra Pty Ltd
AS1239 965 682 283 29.3% SPRINTLINK Sprint
AS6198 457 181 276 60.4% BATI-MIA BellSouth Network
Solutions, Inc
AS6197 476 202 274 57.6% BATI-ATL BellSouth Network
Solutions, Inc
AS705 487 215 272 55.9% ALTERNET-AS UUNET
Technologies, Inc.
AS22927 286 14 272 95.1% AR-TEAR2-LACNIC TELEFONICA DE
ARGENTINA
AS4355 373 115 258 69.2% ERMS-EARTHLNK EARTHLINK, INC
AS4814 270 16 254 94.1% CHINANET-BEIJING-AP China
Telecom (Group)
AS17557 378 144 234 61.9% PKTELECOM-AS-AP Pakistan
Telecom
AS209 529 303 226 42.7% ASN-QWEST Qwest
AS2386 507 282 225 44.4% INS-AS AT&T Data
Communications Services
AS17676 237 29 208 87.8% GIGAINFRA XTAGE CORPORATION
AS27364 266 59 207 77.8% ACS-INTERNET Armstrong Cable
Services
AS11305 341 143 198 58.1% INTERLAND-NET1 Interland
Incorporated
AS22773 203 8 195 96.1% CCINET-2 Cox Communications
Inc. Atlanta
AS690 495 316 179 36.2% MERIT-AS-27 Merit Network Inc.
AS3561 513 335 178 34.7% CWUSA Cable & Wireless USA
AS6347 367 190 177 48.2% DIAMOND SAVVIS Communications
Corporation
AS2048 254 84 170 66.9% LANET-1 State of Louisiana
AS22291 241 79 162 67.2% CHARTER-LA Charter
Communications
AS6327 190 34 156 82.1% SHAWFIBER Shaw Fiberlink
Limited
AS7303 242 93 149 61.6% AR-TAST-LACNIC Telecom
Argentina Stet-France Telecom
S.A.
AS3215 321 175 146 45.5% AS3215 France Telecom
Transpac
Total 16033 7956 8077 50.4% Top 30 total
Please see http://www.cidr-report.org for the full report
------------------------------------
Copies of this report are mailed to:
nanog(a)merit.edu
eof-list(a)ripe.net
apops(a)apops.net
routing-wg(a)ripe.net
afnog(a)afnog.org
1
0
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(a)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(a)cisco.com>.
Routing Table Report 20:00 +10GMT Fri 11 Apr, 2003
Analysis Summary
----------------
BGP routing table entries examined: 124049
Prefixes after maximum aggregation: 78292
Unique aggregates announced to Internet: 59307
Total ASes present in the Internet Routing Table: 14970
Origin-only ASes present in the Internet Routing Table: 12977
Origin ASes announcing only one prefix: 5887
Transit ASes present in the Internet Routing Table: 1993
Transit-only ASes present in the Internet Routing Table: 70
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: 3
Non-routable prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 20
Number of addresses announced to Internet: 1206880288
Equivalent to 71 /8s, 239 /16s and 136 /24s
Percentage of available address space announced: 32.6
Percentage of allocated address space announced: 58.2
Percentage of available address space allocated: 55.9
Total number of prefixes smaller than registry allocations: 58512
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 20748
Total APNIC prefixes after maximum aggregation: 12172
Prefixes being announced from the APNIC address blocks: 19182
Unique aggregates announced from the APNIC address blocks: 11860
APNIC Region origin ASes present in the Internet Routing Table: 1766
APNIC Region origin ASes announcing only one prefix: 519
APNIC Region transit ASes present in the Internet Routing Table: 290
Average APNIC Region AS path length visible: 4.9
Max APNIC Region AS path length visible: 16
Number of APNIC addresses announced to Internet: 109842432
Equivalent to 6 /8s, 140 /16s and 16 /24s
Percentage of available APNIC address space announced: 59.2
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: 76640
Total ARIN prefixes after maximum aggregation: 48173
Prefixes being announced from the ARIN address blocks: 54924
Unique aggregates announced from the ARIN address blocks: 16806
ARIN Region origin ASes present in the Internet Routing Table: 8306
ARIN Region origin ASes announcing only one prefix: 2829
ARIN Region transit ASes present in the Internet Routing Table: 793
Average ARIN Region AS path length visible: 4.5
Max ARIN Region AS path length visible: 17
Number of ARIN addresses announced to Internet: 190251264
Equivalent to 11 /8s, 87 /16s and 1 /24s
Percentage of available ARIN address space announced: 70.9
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: 21362
Total RIPE prefixes after maximum aggregation: 15737
Prefixes being announced from the RIPE address blocks: 17881
Unique aggregates announced from the RIPE address blocks: 11986
RIPE Region origin ASes present in the Internet Routing Table: 4498
RIPE Region origin ASes announcing only one prefix: 2454
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: 16
Number of RIPE addresses announced to Internet: 128928000
Equivalent to 7 /8s, 175 /16s and 73 /24s
Percentage of available RIPE address space announced: 76.8
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: 5297
Total LACNIC prefixes after maximum aggregation: 2210
Prefixes being announced from the LACNIC address blocks: 4681
Unique aggregates announced from the LACNIC address blocks: 2960
LACNIC Region origin ASes present in the Internet Routing Table: 330
LACNIC Region origin ASes announcing only one prefix: 85
LACNIC Region transit ASes present in the Internet Routing Table: 68
Average LACNIC Region AS path length visible: 5.1
Max LACNIC Region AS path length visible: 15
Number of LACNIC addresses announced to Internet: 12420096
Equivalent to 0 /8s, 189 /16s and 132 /24s
Percentage of available LACNIC address space announced: 37.0
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 1100 1105 790 Telstra Pty Ltd
703 394 365 313 UUNET
2907 379 1974 358 SINET Japan
17557 378 28 142 Pakistan Telecom
2764 323 341 291 connect.com.au pty ltd
7474 271 276 207 Optus Communications Pty Ltd
4814 270 79 15 China Telecom (Group)
3786 245 775 212 DACOM Corporation
17676 239 3686 26 XTAGE CORPORATION
4755 236 135 75 Videsh Sanchar Nigam Ltd. Aut
4134 235 1999 122 Data Communications Bureau
9583 220 33 14 Satyam Infoway Ltd.,
4766 210 2078 159 Korea Internet Exchange for "
9443 180 58 79 Primus Telecommunications
9800 175 244 53 CHINA UNICOM
9238 140 8 17 TATA ISP
7476 137 182 29 The University of Queensland
4739 129 57 118 Commerical Internet eXchange
4716 128 731 122 TTnet
9498 126 9 10 BHARTI BT INTERNET LTD.
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
701 1596 8895 1124 UUNET Technologies, Inc.
7018 1360 7172 941 AT&T
1239 967 3120 681 Sprint
3908 933 1571 475 Supernet, Inc.
7132 802 6148 414 Southwestern Bell Internet Se
1 772 2846 493 GENUITY
189 706 341 291 Genuity
4151 691 691 58 USDA
7843 645 401 163 Adelphia Corp.
3561 585 2351 337 Cable & Wireless USA
4323 568 498 165 Time Warner Communications, I
852 549 1110 430 Telus Advanced Communications
18566 540 128 6 Covad Communications
209 535 2140 302 Qwest
2386 508 482 269 AT&T Data Communications Serv
690 495 73 316 Merit Network
705 487 229 215 UUNET Technologies, Inc.
7066 485 204 255 Virginia Polytechnic Institut
6197 476 338 196 BellSouth Network Solutions,
6198 455 226 174 BellSouth Network Solutions,
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 779 2203 646 UUNET - Commercial IP service
3215 320 851 175 France Telecom Transpac
3301 309 1157 299 TeliaNet Sweden
3320 269 1997 231 Deutsche Telekom AG
680 232 2053 229 DFN-IP service G-WiN
1257 216 327 190 SWIPnet Swedish IP Network
5400 196 97 110 BT Ignite European Backbone
5515 196 779 168 Sonera Solution Autonomous Sy
719 195 307 125 LANLINK autonomous system
786 180 1874 180 The JANET IP Service
8220 169 298 159 COLT Internet - International
20858 161 17 3 This AS will be used to conne
8708 155 44 151 Romania Data Systems S.A.
3303 144 517 143 Swisscom Ltd
12302 126 18 33 MobiFon S.A.
2856 119 1298 109 BTnet UK Regional network
3269 112 755 63 TELECOM ITALIA
3246 110 384 107 Song Networks
3233 107 11 12 RNC - Romanian Natioanal R&D
3352 106 734 32 Ibernet, Internet Access Netw
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
6140 294 99 105 ImpSat
7303 242 36 61 Telecom Argentina Stet-France
8151 217 334 119 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
11340 106 3 34 Red Universitaria Nacional
6147 90 62 20 Telefonica Del Peru
11992 90 9 36 Integrated Systems
1916 75 306 45 Fundacao de Amparo a Pesquisa
8065 75 6 15 Empresas Publicas de Medellin
6535 74 5 19 Chilesat Servicios Empresari
13999 74 36 8 Mega Cable S.A. de C.V.
15311 72 28 36 Telefonica Empresas
4270 68 18 10 Red de Interconexion Universi
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 691 633 USDA
18566 540 534 Covad Communications
7843 645 482 Adelphia Corp.
3908 933 458 Supernet, Inc.
7018 1360 419 AT&T
189 706 415 Genuity
4323 568 403 Time Warner Communications, I
7132 802 388 Southwestern Bell Internet Se
1221 1100 310 Telstra Pty Ltd
1239 967 286 Sprint
6347 368 286 SAVVIS Communications Corpora
6198 455 281 BellSouth Network Solutions,
6197 476 280 BellSouth Network Solutions,
1 772 279 GENUITY
705 487 272 UUNET Technologies, Inc.
4355 373 272 EarthLink, Inc.
22927 286 272 TELEFONICA DE ARGENTINA
4814 270 255 China Telecom (Group)
3561 585 248 Cable & Wireless USA
27364 266 248 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
1877 UNALLOCATED 192.108.201.0/24 1880 Stupi, house man's p
65501 PRIVATE 200.73.26.0/24 18747 IFX Communication Ve
Advertised Unallocated Addresses
--------------------------------
Network Origin AS Description
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
192.158.249.0/24 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 /8:17 /9:5 /10:8 /11:13 /12:47
/13:92 /14:251 /15:464 /16:7379 /17:1636 /18:2952
/19:8309 /20:8210 /21:5922 /22:8847 /23:10647 /24:68727
/25:158 /26:193 /27:52 /28:26 /29:13 /30:44
/31:0 /32:37
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
189 627 706 Genuity
3908 592 933 Supernet, Inc.
18566 534 540 Covad Communications
702 485 779 UUNET - Commercial IP service
701 476 1596 UUNET Technologies, Inc.
7018 476 1360 AT&T
690 444 495 Merit Network
7843 392 645 Adelphia Corp.
7066 384 485 Virginia Polytechnic Institut
1239 367 967 Sprint
6198 359 455 BellSouth Network Solutions,
6197 355 476 BellSouth Network Solutions,
11305 318 341 Interland Incorporated
2386 304 508 AT&T Data Communications Serv
20115 299 426 Charter Communications
22927 285 286 TELEFONICA DE ARGENTINA
6140 281 294 ImpSat
1 272 772 GENUITY
27364 259 266 Armstrong Cable Services
3215 243 320 France Telecom Transpac
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:1 12:677 13:1 15:4 17:3 20:9
24:801 25:1 32:86 38:63 40:18 44:2
55:1 57:17 61:407 62:519 63:1883 64:1557
65:1916 66:2357 67:161 68:338 69:102 80:329
81:128 128:150 129:180 130:45 131:135 132:11
133:2 134:151 135:4 136:113 137:110 138:105
139:66 140:118 141:91 142:95 143:46 144:113
145:16 146:269 147:93 148:277 149:71 150:46
151:68 152:246 153:57 154:2 155:107 156:46
157:44 158:124 159:141 160:36 161:75 162:129
163:78 164:309 165:134 166:75 167:328 168:396
169:56 170:316 171:7 192:5349 193:2414 194:1985
195:994 196:464 198:3558 199:3386 200:2912 202:3673
203:5077 204:3066 205:2012 206:2426 207:2424 208:2665
209:2883 210:750 211:339 212:983 213:776 214:20
215:21 216:3301 217:635 218:85 219:13 220:54
End of report
1
0
This report has been generated at Fri Apr 4 21:45:29 2003 AEST.
The report analyses the BGP Routing Table of an AS4637 (Reach) router
and generates a report on aggregation potential within the table.
Check http://www.cidr-report.org/as4637 for a current version of this report.
Recent Table History
Date Prefixes CIDR Agg
29-03-03 121022 86344
30-03-03 121098 86444
30-03-03 121192 86322
31-03-03 121111 86222
01-04-03 121043 86425
02-04-03 121298 86692
03-04-03 121290 86674
04-04-03 121205 86508
AS Summary
14872 Number of ASes in routing system
5874 Number of ASes announcing only one prefix
1557 Largest number of prefixes announced by an AS
AS701 : ALTERNET-AS UUNET Technologies, Inc.
73080832 Largest address span announced by an AS (/32s)
AS568 : SUMNET-AS DISO-UNRRA
Aggregation Summary
The algorithm used in this report proposes aggregation only
when there is a precise match using the AS path, so as
to preserve traffic transit policies. Aggregation is also
proposed across non-advertised address space ('holes').
--- 04Apr03 ---
ASnum NetsNow NetsAggr NetGain % Gain Description
Table 121023 86497 34526 28.5% All ASes
AS4151 612 75 537 87.7% USDA-1 USDA
AS18566 516 12 504 97.7% COVAD Covad Communications
AS701 1557 1113 444 28.5% ALTERNET-AS UUNET
Technologies, Inc.
AS7843 621 189 432 69.6% ADELPHIA-AS Adelphia Corp.
AS3908 956 529 427 44.7% SUPERNETASBLK SuperNet, Inc.
AS7018 1349 958 391 29.0% ATT-INTERNET4 AT&T WorldNet
Services
AS4323 565 181 384 68.0% TW-COMM Time Warner
Communications, Inc.
AS7132 727 409 318 43.7% SBIS-AS SBC Internet Services
- Southwest
AS1221 1108 811 297 26.8% ASN-TELSTRA Telstra Pty Ltd
AS1239 960 679 281 29.3% SPRINTLINK Sprint
AS22927 295 14 281 95.3% AR-TEAR2-LACNIC TELEFONICA DE
ARGENTINA
AS6198 460 185 275 59.8% BATI-MIA BellSouth Network
Solutions, Inc
AS6197 475 202 273 57.5% BATI-ATL BellSouth Network
Solutions, Inc
AS4355 380 110 270 71.1% ERMS-EARTHLNK EARTHLINK, INC
AS705 459 203 256 55.8% ALTERNET-AS UUNET
Technologies, Inc.
AS4814 269 15 254 94.4% CHINANET-BEIJING-AP China
Telecom (Group)
AS2386 499 277 222 44.5% INS-AS AT&T Data
Communications Services
AS17676 235 28 207 88.1% GIGAINFRA XTAGE CORPORATION
AS27364 266 65 201 75.6% ACS-INTERNET Armstrong Cable
Services
AS11305 340 146 194 57.1% INTERLAND-NET1 Interland
Incorporated
AS22773 202 8 194 96.0% CCINET-2 Cox Communications
Inc. Atlanta
AS209 523 337 186 35.6% ASN-QWEST Qwest
AS690 502 318 184 36.7% MERIT-AS-27 Merit Network Inc.
AS22291 240 60 180 75.0% CHARTER-LA Charter
Communications
AS3561 515 338 177 34.4% CWUSA Cable & Wireless USA
AS2048 258 87 171 66.3% LANET-1 State of Louisiana
AS6347 368 201 167 45.4% DIAMOND SAVVIS Communications
Corporation
AS1 639 483 156 24.4% GNTY-1 Genuity
AS6327 190 34 156 82.1% SHAWFIBER Shaw Fiberlink
Limited
AS6140 295 152 143 48.5% IMPSAT-USA ImpSat
Total 16381 8219 8162 49.8% Top 30 total
Please see http://www.cidr-report.org for the full report
------------------------------------
Copies of this report are mailed to:
nanog(a)merit.edu
eof-list(a)ripe.net
apops(a)apops.net
routing-wg(a)ripe.net
afnog(a)afnog.org
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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(a)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(a)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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