Weekly Routing Table Report
Routing Table Analysis
cscora at apnic.net
Fri Jul 16 18:05:41 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 17 Jul, 2004
Analysis Summary
----------------
BGP routing table entries examined: 142439
Prefixes after maximum aggregation: 85533
Unique aggregates announced to Internet: 68001
Total ASes present in the Internet Routing Table: 17594
Origin-only ASes present in the Internet Routing Table: 15254
Origin ASes announcing only one prefix: 7148
Transit ASes present in the Internet Routing Table: 2340
Transit-only ASes present in the Internet Routing Table: 70
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: 8
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 20
Number of addresses announced to Internet: 1305064604
Equivalent to 77 /8s, 201 /16s and 180 /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: 65451
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 27295
Total APNIC prefixes after maximum aggregation: 13989
Prefixes being announced from the APNIC address blocks: 25516
Unique aggregates announced from the APNIC address blocks: 13954
APNIC Region origin ASes present in the Internet Routing Table: 2065
APNIC Region origin ASes announcing only one prefix: 622
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: 153246656
Equivalent to 9 /8s, 34 /16s and 91 /24s
Percentage of available APNIC address space announced: 69.9
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: 81443
Total ARIN prefixes after maximum aggregation: 50032
Prefixes being announced from the ARIN address blocks: 63209
Unique aggregates announced from the ARIN address blocks: 21963
ARIN Region origin ASes present in the Internet Routing Table: 9321
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: 17
Number of ARIN addresses announced to Internet: 227454496
Equivalent to 13 /8s, 142 /16s and 174 /24s
Percentage of available ARIN address space announced: 75.3
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: 26333
Total RIPE prefixes after maximum aggregation: 18587
Prefixes being announced from the RIPE address blocks: 23122
Unique aggregates announced from the RIPE address blocks: 14755
RIPE Region origin ASes present in the Internet Routing Table: 5665
RIPE Region origin ASes announcing only one prefix: 3055
RIPE Region transit ASes present in the Internet Routing Table: 980
Average RIPE Region AS path length visible: 5.4
Max RIPE Region AS path length visible: 26
Number of RIPE addresses announced to Internet: 169022912
Equivalent to 10 /8s, 19 /16s and 21 /24s
Percentage of available RIPE address space announced: 59.3
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: 6172
Total LACNIC prefixes after maximum aggregation: 2244
Prefixes being announced from the LACNIC address blocks: 5843
Unique aggregates announced from the LACNIC address blocks: 3580
LACNIC Region origin ASes present in the Internet Routing Table: 381
LACNIC Region origin ASes announcing only one prefix: 110
LACNIC Region transit ASes present in the Internet Routing Table: 73
Average LACNIC Region AS path length visible: 5.2
Max LACNIC Region AS path length visible: 16
Number of LACNIC addresses announced to Internet: 15305728
Equivalent to 0 /8s, 233 /16s and 140 /24s
Percentage of available LACNIC address space announced: 45.6
LACNIC AS Blocks 26592 - 26623, 27648 - 28671
LACNIC Address Blocks 200/7
Emerging AfriNIC Region Analysis Summary
----------------------------------------
Prefixes being announced by AfriNIC Region ASes: 1193
Total AfriNIC prefixes after maximum aggregation: 681
Prefixes being announced from the AfriNIC address blocks: 811
Unique aggregates announced from the AfriNIC address blocks: 640
AfriNIC Region origin ASes present in the Internet Routing Table: 92
AfriNIC Region origin ASes announcing only one prefix: 22
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: 15
Number of AfriNIC addresses announced to Internet: 1901568
Equivalent to 0 /8s, 29 /16s and 4 /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 821 1057 591 Telstra Pty Ltd
4134 808 4078 148 Data Communications Bureau
4766 498 2895 263 Korea Internet Exchange for "
9583 492 40 106 Satyam Infoway Ltd.,
4755 402 134 58 Videsh Sanchar Nigam Ltd. Aut
9443 353 69 78 Primus Telecommunications
2907 351 1840 325 SINET Japan
17676 341 5084 33 XTAGE CORPORATION
9929 327 157 32 China Netcom Corp.
703 320 343 249 UUNET
17557 320 22 164 Pakistan Telecom
2764 289 258 236 connect.com.au pty ltd
7474 265 269 205 Optus Communications Pty Ltd
9942 230 71 128 COMindico Australia
4802 226 25 141 Wantree Development
9800 225 369 62 CHINA UNICOM
9498 220 48 50 BHARTI BT INTERNET LTD.
17633 202 54 8 ASN for Shandong Provincial N
10036 198 18 179 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 1422 6877 990 AT&T
701 1299 8442 930 UUNET Technologies, Inc.
6347 963 396 102 SAVVIS Communications Corpora
1239 939 2889 631 Sprint
3356 893 10932 674 Level 3 Communications, LLC
4323 740 570 209 Time Warner Communications, I
18566 726 192 8 Covad Communications
6197 717 527 281 BellSouth Network Solutions,
209 610 3435 499 Qwest
20115 566 376 291 Charter Communications
7843 515 669 130 Adelphia Corp.
6198 512 396 214 BellSouth Network Solutions,
852 510 1142 398 Telus Advanced Communications
7132 478 7889 362 Southwestern Bell Internet Se
721 474 15394 339 DLA Systems Automation Center
2386 407 533 227 AT&T Data Communications Serv
22909 399 828 23 Comcast Cable Corporation
4355 391 323 101 EarthLink, Inc.
705 388 128 264 UUNET Technologies, Inc.
376 385 359 112 Reseau Interordinateurs Scien
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 650 2039 542 UUNET - Commercial IP service
3320 299 2463 239 Deutsche Telekom AG
3301 282 1098 271 TeliaNet Sweden
8220 277 433 264 COLT Internet - International
1257 251 747 186 SWIPnet Swedish IP Network
680 244 2025 239 DFN-IP service G-WiN
13083 216 51 8 Mannesmann Datenverarbeitung
3246 213 479 210 Song Networks
5515 200 842 146 Sonera Solution Autonomous Sy
8708 191 112 177 Romania Data Systems S.A.
3215 182 895 70 France Telecom Transpac
25186 172 156 114 France Telecom Transpac's Tra
786 171 1778 171 The JANET IP Service
6746 158 29 128 Dynamic Network Technologies,
719 150 288 102 LANLINK autonomous system
5400 145 207 120 BT Ignite European Backbone
3269 134 1099 64 TELECOM ITALIA
3303 130 609 129 Swisscom Ltd
8866 130 14 11 Bulgarian Telecommunication C
12302 128 18 32 MobiFon S.A.
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
11172 354 96 56 Servicios Alestra S.A de C.V
6140 334 140 65 ImpSat
8151 276 389 128 UniNet S.A. de C.V.
16814 203 13 7 NSS, S.A.
6147 186 86 20 Telefonica Del Peru
6505 134 90 92 Global One Communicaoes Ltda
6503 129 202 87 AVANTEL, S.A.
7303 118 54 17 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 79 5 29 ANDINATEL S.A.
15311 75 19 37 Telefonica Empresas
11311 73 7 18 Sinectis S.A.
14535 72 6 5 Techtel S.A.
5639 71 8 8 Telecommunications Services o
4270 70 18 9 Red de Interconexion Universi
14117 69 5 4 Telefonica del Sur S.A.
10292 67 6 26 TELECOMMUNICATIONS OF JAMAICA
11340 67 5 36 Red Universitaria Nacional
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
3741 252 632 219 The Internet Solution
5536 111 16 4 Internet Egypt Network
2018 94 297 92 Tertiary Education Network
2905 91 276 80 The Internetworking Company o
11845 39 9 11 Data Pro Business Online
20928 35 16 1 Noor Advanced Technologies AS
24835 31 18 6 RAYA Telecom - Egypt
16637 29 9 23 Johnnic e-Ventures
6713 26 38 9 Itissalat Al-MAGHRIB
9129 26 3 4 UUNET Kenya
5713 25 125 23 Telkom SA Ltd
8524 25 2 4 AUCEGYPT Autonomous System
14988 25 16 1 Botswana Telecommunications C
12455 23 4 2 Jambonet Autonomous system
10798 18 1 12 Standard Bank of South Africa
15706 17 4 4 Sudatel Internet Exchange Aut
12258 15 3 10 Vodacom Internet Company
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 963 861 SAVVIS Communications Corpora
18566 726 718 Covad Communications
4134 808 660 Data Communications Bureau
4323 740 531 Time Warner Communications, I
6197 717 436 BellSouth Network Solutions,
9583 492 386 Satyam Infoway Ltd.,
7843 515 385 Adelphia Corp.
22909 399 376 Comcast Cable Corporation
701 1299 369 UUNET Technologies, Inc.
5668 381 363 Century Telephone
27364 379 359 Armstrong Cable Services
4755 402 344 Videsh Sanchar Nigam Ltd. Aut
6467 366 334 E.Spire Communications, Inc.
22773 383 327 Cox Communications, Inc. Atla
1239 939 308 Sprint
17676 341 308 XTAGE CORPORATION
6198 512 298 BellSouth Network Solutions,
11172 354 298 Servicios Alestra S.A de C.V
9929 327 295 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
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
192.145.251.0/24 17832 National Computeriztion Agenc
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 /8:19 /9:3 /10:6 /11:15 /12:61
/13:127 /14:302 /15:528 /16:7898 /17:2113 /18:3690
/19:9553 /20:10041 /21:7377 /22:10326 /23:11882 /24:77846
/25:222 /26:202 /27:108 /28:28 /29:15 /30:67
/31:0 /32:10
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6347 742 963 SAVVIS Communications Corpora
18566 709 726 Covad Communications
6197 545 717 BellSouth Network Solutions,
7018 543 1422 AT&T
3356 501 893 Level 3 Communications, LLC
702 399 650 UUNET - Commercial IP service
6198 381 512 BellSouth Network Solutions,
1239 375 939 Sprint
701 370 1299 UUNET Technologies, Inc.
27364 366 379 Armstrong Cable Services
9583 337 492 Satyam Infoway Ltd.,
5668 334 381 Century Telephone
4766 316 498 Korea Internet Exchange for "
20115 300 566 Charter Communications
6467 266 366 E.Spire Communications, Inc.
9929 259 327 China Netcom Corp.
14824 253 277 NewSouth Communications Corp.
3320 248 299 Deutsche Telekom AG
13609 245 288 Choice One Communications Inc
25844 245 245 Skadden, Arps, Slate, Meagher
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:3 12:833 13:1 15:5 16:2 17:3
20:7 24:760 32:65 33:2 38:74 40:54
44:4 55:1 56:3 57:16 60:4 61:443
62:506 63:1869 64:2067 65:2034 66:2723 67:330
68:502 69:643 70:64 80:576 81:344 82:187
83:107 84:6 128:145 129:171 130:80 131:183
132:23 133:1 134:178 135:17 136:178 137:54
138:170 139:35 140:166 141:106 142:119 143:60
144:102 145:42 146:288 147:88 148:417 149:110
150:93 151:71 152:160 153:64 154:2 155:148
156:57 157:63 158:139 159:148 160:52 161:66
162:382 163:78 164:186 165:164 166:109 167:216
168:231 169:110 170:284 171:8 192:5557 193:2824
194:2066 195:1384 196:575 198:3644 199:3099 200:3598
201:9 202:4733 203:5648 204:3121 205:2091 206:2262
207:2508 208:2193 209:3052 210:1453 211:573 212:996
213:1189 214:70 215:30 216:3755 217:973 218:166
219:119 220:227 221:31 222:98
End of report
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