Weekly Routing Table Report
Routing Table Analysis
cscora at apnic.net
Fri Jan 7 18:06:20 UTC 2005
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 08 Jan, 2005
Analysis Summary
----------------
BGP routing table entries examined: 153319
Prefixes after maximum aggregation: 89967
Unique aggregates announced to Internet: 73706
Total ASes present in the Internet Routing Table: 18741
Origin-only ASes present in the Internet Routing Table: 16272
Origin ASes announcing only one prefix: 7627
Transit ASes present in the Internet Routing Table: 2469
Transit-only ASes present in the Internet Routing Table: 78
Average AS path length visible in the Internet Routing Table: 4.5
Max AS path length visible: 20
Prefixes from unregistered ASNs in the Routing Table: 7
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 16
Number of addresses announced to Internet: 1362623528
Equivalent to 81 /8s, 55 /16s and 252 /24s
Percentage of available address space announced: 36.8
Percentage of allocated address space announced: 59.4
Percentage of available address space allocated: 61.9
Total number of prefixes smaller than registry allocations: 71007
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 30236
Total APNIC prefixes after maximum aggregation: 14760
Prefixes being announced from the APNIC address blocks: 28293
Unique aggregates announced from the APNIC address blocks: 14546
APNIC Region origin ASes present in the Internet Routing Table: 2175
APNIC Region origin ASes announcing only one prefix: 643
APNIC Region transit ASes present in the Internet Routing Table: 329
Average APNIC Region AS path length visible: 4.4
Max APNIC Region AS path length visible: 15
Number of APNIC addresses announced to Internet: 171180032
Equivalent to 10 /8s, 52 /16s and 0 /24s
Percentage of available APNIC address space announced: 78.1
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: 86049
Total ARIN prefixes after maximum aggregation: 52107
Prefixes being announced from the ARIN address blocks: 65837
Unique aggregates announced from the ARIN address blocks: 23938
ARIN Region origin ASes present in the Internet Routing Table: 9789
ARIN Region origin ASes announcing only one prefix: 3533
ARIN Region transit ASes present in the Internet Routing Table: 964
Average ARIN Region AS path length visible: 4.3
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 236672000
Equivalent to 14 /8s, 27 /16s and 84 /24s
Percentage of available ARIN address space announced: 70.5
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, 70/7, 72/8, 198/7, 204/6,
208/7 and 216/8
RIPE Region Analysis Summary
----------------------------
Prefixes being announced by RIPE Region ASes: 28899
Total RIPE prefixes after maximum aggregation: 20012
Prefixes being announced from the RIPE address blocks: 25851
Unique aggregates announced from the RIPE address blocks: 17003
RIPE Region origin ASes present in the Internet Routing Table: 6194
RIPE Region origin ASes announcing only one prefix: 3307
RIPE Region transit ASes present in the Internet Routing Table: 1056
Average RIPE Region AS path length visible: 5.1
Max RIPE Region AS path length visible: 20
Number of RIPE addresses announced to Internet: 183979200
Equivalent to 10 /8s, 247 /16s and 76 /24s
Percentage of available RIPE address space announced: 64.5
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: 6814
Total LACNIC prefixes after maximum aggregation: 2387
Prefixes being announced from the LACNIC address blocks: 6668
Unique aggregates announced from the LACNIC address blocks: 4044
LACNIC Region origin ASes present in the Internet Routing Table: 412
LACNIC Region origin ASes announcing only one prefix: 121
LACNIC Region transit ASes present in the Internet Routing Table: 77
Average LACNIC Region AS path length visible: 5.0
Max LACNIC Region AS path length visible: 15
Number of LACNIC addresses announced to Internet: 17046016
Equivalent to 1 /8s, 4 /16s and 26 /24s
Percentage of available LACNIC address space announced: 50.8
LACNIC AS Blocks 26592-26623, 27648-28671
LACNIC Address Blocks 200/7
Emerging AfriNIC Region Analysis Summary
----------------------------------------
Prefixes being announced by AfriNIC Region ASes: 1314
Total AfriNIC prefixes after maximum aggregation: 701
Prefixes being announced from the AfriNIC address blocks: 868
Unique aggregates announced from the AfriNIC address blocks: 686
AfriNIC Region origin ASes present in the Internet Routing Table: 95
AfriNIC Region origin ASes announcing only one prefix: 23
AfriNIC Region transit ASes present in the Internet Routing Table: 12
Average AfriNIC Region AS path length visible: 4.5
Max AfriNIC Region AS path length visible: 14
Number of AfriNIC addresses announced to Internet: 2103808
Equivalent to 0 /8s, 32 /16s and 26 /24s
Percentage of available AfriNIC address space announced: 12.5
AfriNIC AS Blocks <none>
AfriNIC Address Blocks 196/8
APNIC Region per AS prefix count summary
----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
4134 876 4610 167 Data Communications Bureau
1221 787 1184 562 Telstra Pty Ltd
9583 581 47 29 Satyam Infoway Ltd.,
4766 561 3413 275 Korea Internet Exchange for "
4755 433 176 80 Videsh Sanchar Nigam Ltd. Aut
17676 390 5852 60 XTAGE CORPORATION
9443 362 71 77 Primus Telecommunications
9929 356 164 41 China Netcom Corp.
2907 355 1856 328 SINET Japan
703 320 343 252 UUNET
17557 307 22 150 Pakistan Telecom
10036 294 27 270 C&M Communication Co. Ltd.
2764 283 256 226 connect.com.au pty ltd
7474 272 267 202 Optus Communications Pty Ltd
9800 238 383 76 CHINA UNICOM
7545 232 86 66 TPG Internet Pty Ltd
9498 232 81 53 BHARTI BT INTERNET LTD.
4802 231 28 140 Wantree Development
4814 226 232 6 China Telecom (Group)
7563 226 48 158 Korea Internet Infrastructure
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
7018 1415 6587 962 AT&T WorldNet Services
721 1099 21730 306 DLA Systems Automation Center
701 1050 8327 904 UUNET Technologies, Inc.
1239 932 2881 623 Sprint
2386 847 523 601 AT&T Data Communications Serv
4323 828 670 225 Time Warner Telecom
6197 824 381 369 BellSouth Network Solutions,
18566 760 208 6 Covad Communications
209 655 3439 501 Qwest
3356 610 10887 447 Level 3 Communications, LLC
20115 568 470 302 Charter Communications
3561 549 2369 416 Cable & Wireless USA
852 527 1126 401 Telus Advanced Communications
7843 483 730 100 Adelphia Corp.
6478 470 814 98 AT&T Worldnet Services
6198 450 388 200 BellSouth Network Solutions,
7132 449 8251 381 SBC Internet Services
27364 442 44 20 Armstrong Cable Services
5668 427 87 18 Century Telephone
22909 419 907 65 Comcast Cable Corporation
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 623 2023 514 UUNET - Commercial IP service
3320 292 2992 230 Deutsche Telekom AG
3301 288 1112 276 TeliaNet Sweden
8220 279 466 267 COLT Internet - International
21502 272 40 3 NUMERICABLE is a cabled netwo
680 254 2041 240 DFN-IP service G-WiN
3246 224 483 220 Song Networks
13083 217 51 8 Mannesmann Datenverarbeitung
8708 207 119 190 Romania Data Systems S.A.
1257 205 708 171 SWIPnet Swedish IP Network
5515 193 842 140 Sonera Solution Autonomous Sy
786 176 1794 176 The JANET IP Service
3215 176 998 76 France Telecom Transpac
6746 169 47 136 Dynamic Network Technologies,
8866 163 18 21 Bulgarian Telecommunication C
719 159 322 104 LANLINK autonomous system
3269 158 1360 69 TELECOM ITALIA
3300 152 165 77 AUCS Communications Services
25186 145 138 101 France Telecom Transpac's Tra
5400 136 216 118 BT Ignite European Backbone
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
6140 355 140 69 ImpSat
8151 329 473 141 UniNet S.A. de C.V.
16814 234 14 6 NSS, S.A.
11172 214 99 54 Servicios Alestra S.A de C.V
11664 188 19 28 Keytech SA
6147 187 100 22 Telefonica Del Peru
7303 147 68 20 Telecom Argentina Stet-France
6505 140 90 96 Global One Communicaoes Ltda
6503 124 147 83 AVANTEL, S.A.
14117 114 7 5 Telefonica del Sur S.A.
11992 106 9 31 Integrated Systems
11556 97 48 3 Cable-Wireless Panama
14420 87 6 42 ANDINATEL S.A.
11311 86 8 22 Sinectis S.A.
13999 85 52 9 Mega Cable S.A. de C.V.
6535 84 7 25 Chilesat Servicios Empresari
10481 82 32 7 Prima S.A.
4270 81 18 9 Red de Interconexion Universi
5639 79 8 8 Telecommunications Services o
15311 78 25 37 Telefonica Empresas
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
3741 268 636 226 The Internet Solution
5536 114 16 4 Internet Egypt Network
2018 102 297 98 Tertiary Education Network
2905 77 272 70 The Internetworking Company o
20928 76 16 2 Noor Advanced Technologies AS
24835 48 34 7 RAYA Telecom - Egypt
8452 47 20 5 TEDATA
6713 34 38 9 Itissalat Al-MAGHRIB
9129 33 3 2 UUNET Kenya
5713 27 141 24 Telkom SA Ltd
12455 27 7 4 Jambonet Autonomous system
8524 25 1 4 AUCEGYPT Autonomous System
16637 22 10 19 Johnnic e-Ventures
10798 18 1 12 Standard Bank of South Africa
12258 18 3 12 Vodacom Internet Company
21280 17 2 3 Swift Global Kenya Ltd.Is an
8346 15 7 14 SONATEL-AS Autonomous System
15706 15 4 2 Sudatel Internet Exchange Aut
21491 15 1 3 UTL On-line is RF broadband I
15808 13 1 2 Communication Solutions Ltd i
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
721 1099 793 DLA Systems Automation Center
18566 760 754 Covad Communications
4134 876 709 Data Communications Bureau
4323 828 603 Time Warner Telecom
9583 581 552 Satyam Infoway Ltd.,
6197 824 455 BellSouth Network Solutions,
27364 442 422 Armstrong Cable Services
5668 427 409 Century Telephone
22773 417 394 Cox Communications, Inc. Atla
7843 483 383 Adelphia Corp.
6478 470 372 AT&T Worldnet Services
22909 419 354 Comcast Cable Corporation
4755 433 353 Videsh Sanchar Nigam Ltd. Aut
6467 372 341 E.Spire Communications, Inc.
17676 390 330 XTAGE CORPORATION
9929 356 315 China Netcom Corp.
1239 932 309 Sprint
13609 338 303 Choice One Communications Inc
4766 561 286 Korea Internet Exchange for "
6140 355 286 ImpSat
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
26422 UNALLOCATED 196.46.184.0/22 3741 The Internet Solutio
64512 PRIVATE 199.213.17.0/25 15296 Netera Alliance Inc.
64512 PRIVATE 199.213.17.128/25 15296 Netera Alliance Inc.
64512 PRIVATE 199.216.97.0/28 15296 Netera Alliance Inc.
65002 PRIVATE 208.179.184.0/24 11509 The Pajo Group
65529 PRIVATE 216.21.199.0/24 14697 VDot.Net
65529 PRIVATE 216.152.237.0/24 14697 VDot.Net
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
158.0.0.0/13 721 DLA Systems Automation Center
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 WorldNet Services
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
192.200.100.0/24 7018 AT&T WorldNet Services
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 /10:7 /11:15 /12:59
/13:139 /14:313 /15:566 /16:8240 /17:2355 /18:4053
/19:10054 /20:10639 /21:8207 /22:11372 /23:12909 /24:83467
/25:252 /26:234 /27:127 /28:63 /29:37 /30:138
/31:0 /32:51
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
18566 745 760 Covad Communications
6197 670 824 BellSouth Network Solutions,
2386 623 847 AT&T Data Communications Serv
7018 580 1415 AT&T WorldNet Services
27364 427 442 Armstrong Cable Services
9583 405 581 Satyam Infoway Ltd.,
702 380 623 UUNET - Commercial IP service
4766 379 561 Korea Internet Exchange for "
5668 370 427 Century Telephone
1239 369 932 Sprint
6198 327 450 BellSouth Network Solutions,
13609 295 338 Choice One Communications Inc
10036 294 294 C&M Communication Co. Ltd.
6517 289 313 Yipes Communications, Inc.
9929 285 356 China Netcom Corp.
6467 283 372 E.Spire Communications, Inc.
4323 273 828 Time Warner Telecom
21502 269 272 NUMERICABLE is a cabled netwo
11456 259 304 Carolina Online, Inc.
701 254 1050 UUNET Technologies, Inc.
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:4 8:10 12:1460 13:1 15:5 16:2
17:3 18:4 20:4 24:720 32:77 33:3
38:87 40:55 44:3 47:2 52:3 55:2
56:3 57:21 59:1 60:12 61:676 62:523
63:1854 64:2521 65:2082 66:2491 67:480 68:521
69:857 70:52 71:1 72:24 80:529 81:626
82:381 83:213 84:80 85:41 128:120 129:166
130:91 131:193 132:35 134:144 135:30 136:188
137:68 138:159 139:36 140:190 141:108 142:133
143:124 144:164 145:41 146:282 147:87 148:263
149:128 150:93 151:62 152:115 153:70 154:2
155:134 156:61 157:69 158:148 159:162 160:63
161:60 162:383 163:85 164:214 165:160 166:126
167:224 168:366 169:131 170:313 171:8 192:5652
193:3036 194:2232 195:1543 196:602 198:3865 199:3245
200:3950 201:43 202:5064 203:5886 204:3564 205:2108
206:2299 207:2530 208:2090 209:3052 210:1539 211:732
212:1153 213:1259 214:233 215:31 216:3732 217:1080
218:173 219:87 220:319 221:97 222:38
End of report
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