Weekly Routing Table Report
Routing Table Analysis
cscora at apnic.net
Fri Jul 23 18:06:19 UTC 2004
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
If you have any comments please contact Philip Smith <pfs at cisco.com>.
Routing Table Report 04:00 +10GMT Sat 24 Jul, 2004
Analysis Summary
----------------
BGP routing table entries examined: 142670
Prefixes after maximum aggregation: 85520
Unique aggregates announced to Internet: 68654
Total ASes present in the Internet Routing Table: 17645
Origin-only ASes present in the Internet Routing Table: 15315
Origin ASes announcing only one prefix: 7166
Transit ASes present in the Internet Routing Table: 2330
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: 26
Prefixes from unregistered ASNs in the Routing Table: 9
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 19
Number of addresses announced to Internet: 1304901856
Equivalent to 77 /8s, 199 /16s and 56 /24s
Percentage of available address space announced: 35.2
Percentage of allocated address space announced: 57.8
Percentage of available address space allocated: 60.9
Total number of prefixes smaller than registry allocations: 65553
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 27454
Total APNIC prefixes after maximum aggregation: 13982
Prefixes being announced from the APNIC address blocks: 25658
Unique aggregates announced from the APNIC address blocks: 14026
APNIC Region origin ASes present in the Internet Routing Table: 2082
APNIC Region origin ASes announcing only one prefix: 624
APNIC Region transit ASes present in the Internet Routing Table: 331
Average APNIC Region AS path length visible: 4.9
Max APNIC Region AS path length visible: 16
Number of APNIC addresses announced to Internet: 153526784
Equivalent to 9 /8s, 38 /16s and 162 /24s
Percentage of available APNIC address space announced: 70.1
APNIC AS Blocks 4608 - 4864, 7467 - 7722, 9216 - 10239
17408 - 18431, 23552 - 24575
APNIC Address Blocks 58/7, 60/7, 202/7, 210/7, 218/7, 220/7 and 222/8
ARIN Region Analysis Summary
----------------------------
Prefixes being announced by ARIN Region ASes: 81511
Total ARIN prefixes after maximum aggregation: 49985
Prefixes being announced from the ARIN address blocks: 63255
Unique aggregates announced from the ARIN address blocks: 22028
ARIN Region origin ASes present in the Internet Routing Table: 9329
ARIN Region origin ASes announcing only one prefix: 3339
ARIN Region transit ASes present in the Internet Routing Table: 914
Average ARIN Region AS path length visible: 4.6
Max ARIN Region AS path length visible: 18
Number of ARIN addresses announced to Internet: 227994656
Equivalent to 13 /8s, 150 /16s and 236 /24s
Percentage of available ARIN address space announced: 75.5
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
31744 - 33791
ARIN Address Blocks 24/8, 63/8, 64/6, 68/7, 70/8, 198/7, 204/6, 208/7
and 216/8
RIPE Region Analysis Summary
----------------------------
Prefixes being announced by RIPE Region ASes: 26378
Total RIPE prefixes after maximum aggregation: 18619
Prefixes being announced from the RIPE address blocks: 23173
Unique aggregates announced from the RIPE address blocks: 15368
RIPE Region origin ASes present in the Internet Routing Table: 5688
RIPE Region origin ASes announcing only one prefix: 3071
RIPE Region transit ASes present in the Internet Routing Table: 973
Average RIPE Region AS path length visible: 5.4
Max RIPE Region AS path length visible: 26
Number of RIPE addresses announced to Internet: 167462080
Equivalent to 9 /8s, 251 /16s and 68 /24s
Percentage of available RIPE address space announced: 58.7
RIPE AS Blocks 1877 - 1901, 2043, 2047, 2107 - 2136, 2585 - 2614
2773 - 2822, 2830 - 2879, 3154 - 3353, 5377 - 5631
6656 - 6911, 8192 - 9215, 12288 - 13311, 15360 - 16383
20480 - 21503, 24576 - 25599, 28672 - 29695
30720 - 31743, 33792 - 34815
RIPE Address Blocks 62/8, 80/5, 88/8, 188/8, 193/8, 194/7,
212/7 and 217/8
LACNIC Region Analysis Summary
------------------------------
Prefixes being announced by LACNIC Region ASes: 6115
Total LACNIC prefixes after maximum aggregation: 2249
Prefixes being announced from the LACNIC address blocks: 5805
Unique aggregates announced from the LACNIC address blocks: 3530
LACNIC Region origin ASes present in the Internet Routing Table: 384
LACNIC Region origin ASes announcing only one prefix: 111
LACNIC Region transit ASes present in the Internet Routing Table: 74
Average LACNIC Region AS path length visible: 5.1
Max LACNIC Region AS path length visible: 16
Number of LACNIC addresses announced to Internet: 15371008
Equivalent to 0 /8s, 234 /16s and 139 /24s
Percentage of available LACNIC address space announced: 45.8
LACNIC AS Blocks 26592 - 26623, 27648 - 28671
LACNIC Address Blocks 200/7
Emerging AfriNIC Region Analysis Summary
----------------------------------------
Prefixes being announced by AfriNIC Region ASes: 1208
Total AfriNIC prefixes after maximum aggregation: 685
Prefixes being announced from the AfriNIC address blocks: 817
Unique aggregates announced from the AfriNIC address blocks: 645
AfriNIC Region origin ASes present in the Internet Routing Table: 91
AfriNIC Region origin ASes announcing only one prefix: 21
AfriNIC Region transit ASes present in the Internet Routing Table: 13
Average AfriNIC Region AS path length visible: 4.8
Max AfriNIC Region AS path length visible: 16
Number of AfriNIC addresses announced to Internet: 1903616
Equivalent to 0 /8s, 29 /16s and 12 /24s
Percentage of available AfriNIC address space announced: 11.3
AfriNIC AS Blocks <none>
AfriNIC Address Blocks 196/8
APNIC Region per AS prefix count summary
----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
1221 818 1056 589 Telstra Pty Ltd
4134 812 4096 150 Data Communications Bureau
4766 502 2895 265 Korea Internet Exchange for "
9583 486 39 109 Satyam Infoway Ltd.,
4755 398 134 54 Videsh Sanchar Nigam Ltd. Aut
9443 353 69 78 Primus Telecommunications
2907 352 1840 326 SINET Japan
17676 341 5084 33 XTAGE CORPORATION
9929 329 159 31 China Netcom Corp.
17557 321 22 164 Pakistan Telecom
703 316 342 245 UUNET
2764 289 258 236 connect.com.au pty ltd
7474 267 269 205 Optus Communications Pty Ltd
9942 237 71 130 COMindico Australia
9800 225 369 62 CHINA UNICOM
4802 224 25 139 Wantree Development
9498 222 48 52 BHARTI BT INTERNET LTD.
17633 203 54 8 ASN for Shandong Provincial N
10036 197 18 178 C&M Communication Co. Ltd.
4837 191 2019 105 chinanet IDC center beijing n
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
7018 1426 6874 993 AT&T
701 1312 8443 943 UUNET Technologies, Inc.
6347 952 391 122 SAVVIS Communications Corpora
1239 938 2871 623 Sprint
3356 888 10932 671 Level 3 Communications, LLC
4323 739 570 210 Time Warner Communications, I
18566 729 192 8 Covad Communications
6197 721 479 301 BellSouth Network Solutions,
209 614 3427 500 Qwest
721 569 20776 263 DLA Systems Automation Center
20115 566 376 291 Charter Communications
852 511 1142 399 Telus Advanced Communications
7843 511 669 127 Adelphia Corp.
7132 484 7880 366 Southwestern Bell Internet Se
6198 449 394 203 BellSouth Network Solutions,
2386 411 533 230 AT&T Data Communications Serv
22909 396 830 33 Comcast Cable Corporation
4355 391 323 101 EarthLink, Inc.
705 388 128 264 UUNET Technologies, Inc.
22773 387 774 58 Cox Communications, Inc. Atla
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 647 2038 539 UUNET - Commercial IP service
3320 300 2468 237 Deutsche Telekom AG
3301 281 1098 270 TeliaNet Sweden
8220 276 433 264 COLT Internet - International
680 244 2025 239 DFN-IP service G-WiN
1257 217 747 186 SWIPnet Swedish IP Network
13083 216 51 8 Mannesmann Datenverarbeitung
3246 215 484 212 Song Networks
5515 200 842 146 Sonera Solution Autonomous Sy
8708 192 113 176 Romania Data Systems S.A.
3215 182 895 70 France Telecom Transpac
786 174 1794 174 The JANET IP Service
25186 172 156 114 France Telecom Transpac's Tra
6746 158 29 128 Dynamic Network Technologies,
719 150 288 102 LANLINK autonomous system
5400 146 207 121 BT Ignite European Backbone
3269 138 1131 63 TELECOM ITALIA
8866 133 15 14 Bulgarian Telecommunication C
3303 131 610 130 Swisscom Ltd
12302 128 18 32 MobiFon S.A.
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
11172 353 99 54 Servicios Alestra S.A de C.V
6140 334 140 65 ImpSat
8151 277 389 126 UniNet S.A. de C.V.
16814 203 13 7 NSS, S.A.
6147 185 86 20 Telefonica Del Peru
6505 134 90 92 Global One Communicaoes Ltda
6503 127 202 85 AVANTEL, S.A.
7303 120 55 18 Telecom Argentina Stet-France
11992 91 9 29 Integrated Systems
11556 87 57 24 Cable-Wireless Panama
6535 81 5 16 Chilesat Servicios Empresari
14420 81 5 31 ANDINATEL S.A.
11311 80 7 18 Sinectis S.A.
15311 75 19 37 Telefonica Empresas
14535 73 6 5 Techtel S.A.
5639 71 8 8 Telecommunications Services o
4270 70 18 9 Red de Interconexion Universi
10292 67 6 26 TELECOMMUNICATIONS OF JAMAICA
11340 67 5 36 Red Universitaria Nacional
14259 67 4 5 GTD Internet S.A.
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
3741 252 632 219 The Internet Solution
5536 113 16 4 Internet Egypt Network
2018 94 297 92 Tertiary Education Network
2905 92 276 81 The Internetworking Company o
11845 42 9 11 Data Pro Business Online
20928 42 16 1 Noor Advanced Technologies AS
24835 31 18 6 RAYA Telecom - Egypt
16637 30 9 23 Johnnic e-Ventures
14988 28 16 1 Botswana Telecommunications C
9129 27 3 4 UUNET Kenya
6713 26 38 9 Itissalat Al-MAGHRIB
5713 25 125 23 Telkom SA Ltd
8524 24 2 7 AUCEGYPT Autonomous System
12455 23 4 2 Jambonet Autonomous system
10798 18 1 12 Standard Bank of South Africa
12258 15 3 10 Vodacom Internet Company
15706 15 4 2 Sudatel Internet Exchange Aut
8346 13 6 12 SONATEL-AS Autonomous System
17148 13 1 7 First National Bank
2609 12 26 4 Tunisia BackBone AS
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
6347 952 830 SAVVIS Communications Corpora
18566 729 721 Covad Communications
4134 812 662 Data Communications Bureau
4323 739 529 Time Warner Communications, I
6197 721 420 BellSouth Network Solutions,
7843 511 384 Adelphia Corp.
9583 486 377 Satyam Infoway Ltd.,
701 1312 369 UUNET Technologies, Inc.
5668 383 365 Century Telephone
22909 396 363 Comcast Cable Corporation
4755 398 344 Videsh Sanchar Nigam Ltd. Aut
6467 369 336 E.Spire Communications, Inc.
27364 349 330 Armstrong Cable Services
22773 387 329 Cox Communications, Inc. Atla
1239 938 315 Sprint
17676 341 308 XTAGE CORPORATION
721 569 306 DLA Systems Automation Center
11172 353 299 Servicios Alestra S.A de C.V
9929 329 298 China Netcom Corp.
4355 391 290 EarthLink, Inc.
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
18416 UNALLOCATED 61.56.96.0/24 9919 New Century InfoComm
18416 UNALLOCATED 61.56.96.0/20 9919 New Century InfoComm
18416 UNALLOCATED 61.56.97.0/24 9919 New Century InfoComm
18416 UNALLOCATED 61.56.98.0/24 9919 New Century InfoComm
65534 PRIVATE 80.68.80.0/20 8943 Jump Networks Ltd.
1877 UNALLOCATED 192.108.199.0/24 1876 Southern Methodist U
18412 UNALLOCATED 211.77.0.0/19 9674 Far EastTone Telecom
63330 RESERVED 213.8.224.0/23 5486 Euronet Digital Comm
63330 RESERVED 213.8.226.0/23 5486 Euronet Digital Comm
Advertised Unallocated Addresses
--------------------------------
Network Origin AS Description
132.0.0.0/10 721 DLA Systems Automation Center
137.0.0.0/13 721 DLA Systems Automation Center
156.154.16.0/22 7786 Lockheed Martin IMS
158.0.0.0/13 721 DLA Systems Automation Center
164.234.0.0/18 721 DLA Systems Automation Center
164.234.0.0/16 721 DLA Systems Automation Center
192.43.230.0/24 4738 South Australian Academic Res
192.44.0.0/19 702 UUNET - Commercial IP service
192.70.164.0/24 25689 National Research Council of
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
192.84.205.0/24 719 LANLINK autonomous system
192.119.135.0/24 270 NASA
192.135.50.0/24 7018 AT&T
192.136.79.0/24 719 LANLINK autonomous system
192.172.0.0/19 721 DLA Systems Automation Center
192.172.11.0/24 721 DLA Systems Automation Center
Number of prefixes announced per prefix length (Global)
-------------------------------------------------------
/1:0 /2:0 /3:0 /4:0 /5:0 /6:0
/7:0 /8:18 /9:3 /10:6 /11:15 /12:61
/13:127 /14:301 /15:530 /16:7919 /17:2126 /18:3712
/19:9553 /20:10071 /21:7397 /22:10383 /23:11888 /24:77898
/25:219 /26:198 /27:115 /28:35 /29:17 /30:68
/31:0 /32:10
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6347 734 952 SAVVIS Communications Corpora
18566 712 729 Covad Communications
6197 552 721 BellSouth Network Solutions,
7018 550 1426 AT&T
3356 499 888 Level 3 Communications, LLC
702 396 647 UUNET - Commercial IP service
701 388 1312 UUNET Technologies, Inc.
1239 369 938 Sprint
5668 336 383 Century Telephone
27364 336 349 Armstrong Cable Services
9583 333 486 Satyam Infoway Ltd.,
6198 331 449 BellSouth Network Solutions,
4766 317 502 Korea Internet Exchange for "
20115 300 566 Charter Communications
6467 268 369 E.Spire Communications, Inc.
9929 260 329 China Netcom Corp.
14824 254 278 NewSouth Communications Corp.
3320 248 300 Deutsche Telekom AG
13609 246 289 Choice One Communications Inc
25844 245 245 Skadden, Arps, Slate, Meagher
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:3 12:832 13:1 15:5 16:2 17:3
20:7 24:740 32:66 33:2 38:74 40:54
44:4 55:1 56:3 57:16 60:5 61:439
62:510 63:1887 64:2063 65:2040 66:2713 67:344
68:505 69:687 70:64 80:544 81:348 82:189
83:115 84:6 128:151 129:171 130:81 131:185
132:23 134:178 135:17 136:174 137:55 138:169
139:35 140:165 141:105 142:119 143:60 144:99
145:42 146:287 147:89 148:418 149:111 150:93
151:68 152:162 153:64 154:2 155:128 156:57
157:66 158:139 159:147 160:53 161:65 162:384
163:79 164:184 165:165 166:111 167:218 168:233
169:114 170:285 171:8 192:5555 193:2830 194:2062
195:1392 196:579 198:3641 199:3103 200:3549 201:9
202:4776 203:5679 204:3119 205:2081 206:2264 207:2503
208:2179 209:3057 210:1449 211:574 212:1001 213:1192
214:70 215:30 216:3740 217:984 218:172 219:123
220:226 221:30 222:98
End of report
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