Weekly Routing Table Report
Routing Table Analysis
cscora at apnic.net
Fri Jul 1 18:06:40 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 02 Jul, 2005
Analysis Summary
----------------
BGP routing table entries examined: 165847
Prefixes after maximum aggregation: 95922
Unique aggregates announced to Internet: 80434
Total ASes present in the Internet Routing Table: 19971
Origin-only ASes present in the Internet Routing Table: 17403
Origin ASes announcing only one prefix: 8195
Transit ASes present in the Internet Routing Table: 2568
Transit-only ASes present in the Internet Routing Table: 73
Average AS path length visible in the Internet Routing Table: 4.5
Max AS path length visible: 30
Prefixes from unregistered ASNs in the Routing Table: 15
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 15
Number of addresses announced to Internet: 1389927648
Equivalent to 82 /8s, 216 /16s and 156 /24s
Percentage of available address space announced: 37.5
Percentage of allocated address space announced: 56.5
Percentage of available address space allocated: 66.4
Total number of prefixes smaller than registry allocations: 78553
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 34455
Total APNIC prefixes after maximum aggregation: 16088
Prefixes being announced from the APNIC address blocks: 32278
Unique aggregates announced from the APNIC address blocks: 16386
APNIC Region origin ASes present in the Internet Routing Table: 2298
APNIC Region origin ASes announcing only one prefix: 673
APNIC Region transit ASes present in the Internet Routing Table: 351
Average APNIC Region AS path length visible: 4.5
Max APNIC Region AS path length visible: 19
Number of APNIC addresses announced to Internet: 188395392
Equivalent to 11 /8s, 58 /16s and 175 /24s
Percentage of available APNIC address space announced: 69.9
APNIC AS Blocks 4608-4864, 7467-7722, 9216-10239, 17408-18431
(pre-ERX allocations) 23552-24575, 37888-38911
APNIC Address Blocks 58/7, 60/7, 124/7, 126/8, 202/7, 210/7, 218/7,
220/7 and 222/8
ARIN Region Analysis Summary
----------------------------
Prefixes being announced by ARIN Region ASes: 89015
Total ARIN prefixes after maximum aggregation: 54188
Prefixes being announced from the ARIN address blocks: 69548
Unique aggregates announced from the ARIN address blocks: 25639
ARIN Region origin ASes present in the Internet Routing Table: 10038
ARIN Region origin ASes announcing only one prefix: 3696
ARIN Region transit ASes present in the Internet Routing Table: 942
Average ARIN Region AS path length visible: 4.3
Max ARIN Region AS path length visible: 17
Number of ARIN addresses announced to Internet: 251615744
Equivalent to 14 /8s, 255 /16s and 90 /24s
Percentage of available ARIN address space announced: 62.5
ARIN AS Blocks 1-1876, 1902-2042, 2044-2046, 2048-2106
(pre-ERX allocations) 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, 29696-30719, 31744-33791
35840-36863
ARIN Address Blocks 24/8, 63/8, 64/6, 68/7, 70/6, 74/7, 76/8,
198/7, 204/6, 208/7 and 216/8
RIPE Region Analysis Summary
----------------------------
Prefixes being announced by RIPE Region ASes: 31643
Total RIPE prefixes after maximum aggregation: 21750
Prefixes being announced from the RIPE address blocks: 28788
Unique aggregates announced from the RIPE address blocks: 19330
RIPE Region origin ASes present in the Internet Routing Table: 6816
RIPE Region origin ASes announcing only one prefix: 3596
RIPE Region transit ASes present in the Internet Routing Table: 1112
Average RIPE Region AS path length visible: 5.2
Max RIPE Region AS path length visible: 30
Number of RIPE addresses announced to Internet: 210742848
Equivalent to 12 /8s, 143 /16s and 174 /24s
Percentage of available RIPE address space announced: 62.8
RIPE AS Blocks 1877-1901, 2043, 2047, 2107-2136, 2585-2614
(pre-ERX allocations) 2773-2822, 2830-2879, 3154-3353, 5377-5631
6656-6911, 8192-9215, 12288-13311, 15360-16383
20480-21503, 24576-25599, 28672-29695
30720-31743, 33792-35839
RIPE Address Blocks 62/8, 80/5, 88/6, 188/8, 193/8, 194/7, 212/7
and 217/8
LACNIC Region Analysis Summary
------------------------------
Prefixes being announced by LACNIC Region ASes: 9047
Total LACNIC prefixes after maximum aggregation: 3125
Prefixes being announced from the LACNIC address blocks: 7430
Unique aggregates announced from the LACNIC address blocks: 4343
LACNIC Region origin ASes present in the Internet Routing Table: 621
LACNIC Region origin ASes announcing only one prefix: 191
LACNIC Region transit ASes present in the Internet Routing Table: 114
Average LACNIC Region AS path length visible: 5.1
Max LACNIC Region AS path length visible: 21
Number of LACNIC addresses announced to Internet: 20414752
Equivalent to 1 /8s, 55 /16s and 129 /24s
Percentage of available LACNIC address space announced: 30.4
LACNIC AS Blocks 26592-26623, 27648-28671, plus ERX transfers
LACNIC Address Blocks 189/8, 190/8, 200/7
AfriNIC Region Analysis Summary
-------------------------------
Prefixes being announced by AfriNIC Region ASes: 1666
Total AfriNIC prefixes after maximum aggregation: 771
Prefixes being announced from the AfriNIC address blocks: 1020
Unique aggregates announced from the AfriNIC address blocks: 782
AfriNIC Region origin ASes present in the Internet Routing Table: 131
AfriNIC Region origin ASes announcing only one prefix: 39
AfriNIC Region transit ASes present in the Internet Routing Table: 17
Average AfriNIC Region AS path length visible: 4.6
Max AfriNIC Region AS path length visible: 12
Number of AfriNIC addresses announced to Internet: 2306560
Equivalent to 0 /8s, 35 /16s and 50 /24s
Percentage of available AfriNIC address space announced: 6.9
AfriNIC AS Blocks 36864-37887 & ERX transfers
AfriNIC Address Blocks 41/8, 196/8
APNIC Region per AS prefix count summary
----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
4134 922 5150 193 CHINANET-BACKBONE
1221 759 1454 535 Telstra Pty Ltd
9583 756 55 81 Sify Limited
4755 647 248 146 Videsh Sanchar Nigam Ltd. Aut
4766 591 3413 279 Korea Telecom (KIX)
7545 501 104 72 TPG Internet Pty Ltd
17676 436 6589 75 Softbank BB Corp.
9929 378 223 49 China Netcom Corp.
9443 374 77 76 Primus Telecommunications
10036 346 65 310 C&M Communication Co. Ltd.
2907 338 1805 315 SINET Japan
9498 323 83 60 BHARTI BT INTERNET LTD.
17557 320 23 162 Pakistan Telecom
7474 312 272 215 SingTel Optus Pty Ltd
4802 287 50 164 Wantree Development
4808 282 243 159 CNCGROUP IP network: China169
9837 280 80 184 Powertel Ltd
18302 271 109 155 SK Global co., Ltd
17974 267 65 14 PT TELEKOMUNIKASI INDONESIA
17488 258 15 18 Hathway IP Over Cable Interne
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
7018 1491 6430 966 AT&T WorldNet Services
174 1136 5788 1060 Cogent Communications
4323 1128 632 218 Time Warner Telecom
721 1109 21787 313 DLA Systems Automation Center
701 1013 8168 855 UUNET Technologies, Inc.
6197 933 519 434 BellSouth Network Solutions,
1239 882 2899 635 Sprint
2386 882 526 649 AT&T Data Communications Serv
18566 825 224 7 Covad Communications
20115 650 498 321 Charter Communications
209 627 3506 495 Qwest
3356 557 10775 426 Level 3 Communications, LLC
27364 555 44 18 Armstrong Cable Services
3602 542 123 104 Sprint Canada, Inc.
852 540 1093 387 Telus Advanced Communications
3561 539 2385 423 Savvis
22773 498 1188 23 Cox Communications, Inc.
7725 497 60 15 MediaOne
5668 488 114 25 CenturyTel Internet Holdings,
6198 464 425 220 BellSouth Network Solutions,
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 592 1999 483 UUNET - Commercial IP service
3320 305 3232 242 Deutsche Telekom AG
3301 299 1081 286 TeliaNet Sweden
8220 268 469 263 COLT Telecommunications
680 244 2041 240 DFN-IP service G-WiN
8708 231 254 213 Romania Data Systems S.A.
3246 225 488 220 Song Networks
1257 194 712 172 SWIPnet Swedish IP Network
5515 180 778 127 Sonera Solution Autonomous Sy
786 175 1794 175 The JANET IP Service
5400 171 286 146 BT Ignite European Backbone
6746 171 48 149 Dynamic Network Technologies,
3269 169 1520 72 TELECOM ITALIA
719 168 340 100 LANLINK autonomous system
8866 159 21 11 Bulgarian Telecommunication C
3300 154 184 87 AUCS Communications Services
6830 149 537 31 UPC Distribution Services
9121 145 274 41 TTnet Autonomous System
25186 140 145 97 France Telecom Transpac's Tra
3352 138 1272 35 Ibernet, Internet Access Netw
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
8151 377 600 162 UniNet S.A. de C.V.
16814 264 16 12 NSS, S.A.
11172 226 99 57 Servicios Alestra S.A de C.V
11664 203 19 23 Keytech SA
6147 197 110 21 Telefonica Del Peru
14117 152 9 5 Telefonica del Sur S.A.
7303 150 69 18 Telecom Argentina Stet-France
19632 140 14 5 Metropolis Intercom S.A.
22047 133 112 7 VTR PUNTO NET S.A.
6505 131 90 88 Global One Communicaoes Ltda
11556 131 64 3 Cable-Wireless Panama
19169 114 7 21 Telconet
18822 110 7 14 TELEFONICA MANQUEHUE
13999 107 52 9 Mega Cable S.A. de C.V.
6503 101 146 72 AVANTEL, S.A.
10481 101 40 7 Prima S.A.
23216 98 24 23 RAMtelecom Telecomunicaciones
5639 96 12 9 Telecommunications Services o
22927 96 73 25 TELEFONICA DE ARGENTINA
21826 95 13 20 INTERCABLE
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
3741 266 637 223 The Internet Solution
5536 120 15 17 Internet Egypt Network
8452 93 28 6 TEDATA
2018 91 295 86 Tertiary Education Network
20928 82 16 2 Noor Advanced Technologies AS
2905 75 266 67 The Internetworking Company o
6713 59 54 8 Itissalat Al-MAGHRIB
24835 57 34 6 RAYA Telecom - Egypt
9129 45 3 3 UUNET Kenya
12455 40 6 3 Jambonet Autonomous system
5713 36 142 29 Telkom SA Ltd
15475 36 84 4 Nile Online
15706 31 8 3 Sudatel Internet Exchange Aut
8524 25 1 4 AUCEGYPT Autonomous System
16637 22 10 19 Johnnic e-Ventures
10798 19 1 11 Standard Bank of South Africa
23889 19 5 8 MAURITIUS TELECOM
21491 18 1 1 UTL On-line is RF broadband I
12258 17 3 11 Vodacom Internet Company
15808 17 2 2 Communication Solutions Ltd i
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
4323 1128 910 Time Warner Telecom
18566 825 818 Covad Communications
721 1109 796 DLA Systems Automation Center
4134 922 729 CHINANET-BACKBONE
9583 756 675 Sify Limited
27364 555 537 Armstrong Cable Services
4755 647 501 Videsh Sanchar Nigam Ltd. Aut
6197 933 499 BellSouth Network Solutions,
7725 497 482 MediaOne
22773 498 475 Cox Communications, Inc.
5668 488 463 CenturyTel Internet Holdings,
3602 542 438 Sprint Canada, Inc.
7545 501 429 TPG Internet Pty Ltd
17676 436 361 Softbank BB Corp.
6467 384 350 E.Spire Communications, Inc.
20115 650 329 Charter Communications
9929 378 329 China Netcom Corp.
6140 394 319 ImpSat
4766 591 312 Korea Telecom (KIX)
19262 419 306 Verizon Global Networks
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
65050 PRIVATE 168.96.148.0/24 6140 ImpSat
65507 PRIVATE 200.0.64.0/24 27750 Cooperación Latino A
65004 PRIVATE 200.0.113.0/24 28477 Universidad Autonoma
65004 PRIVATE 200.4.0.0/24 28477 Universidad Autonoma
65004 PRIVATE 200.4.1.0/24 28477 Universidad Autonoma
65004 PRIVATE 200.4.2.0/24 28477 Universidad Autonoma
65004 PRIVATE 200.4.3.0/24 28477 Universidad Autonoma
65004 PRIVATE 200.4.4.0/24 28477 Universidad Autonoma
65004 PRIVATE 200.4.5.0/24 28477 Universidad Autonoma
65004 PRIVATE 200.4.6.0/24 28477 Universidad Autonoma
65004 PRIVATE 200.4.7.0/24 28477 Universidad Autonoma
64512 PRIVATE 200.61.32.0/23 11664 Keytech SA
65201 PRIVATE 201.30.243.0/24 4230 Embratel
65005 PRIVATE 203.200.197.0/24 4755 Videsh Sanchar Nigam
65444 PRIVATE 212.25.125.0/24 8551 Bezeq International
Advertised Unallocated Addresses
--------------------------------
Network Origin AS Description
50.160.0.0/13 1221 Telstra Pty Ltd
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
172.32.0.0/24 7011 Citizens Utilities
192.43.230.0/24 7575 Australian Academic and Rease
192.44.0.0/24 5501 Fraunhofer Gesellschaft
192.44.0.0/19 702 UUNET - Commercial IP service
192.70.164.0/24 25689 National Research Council of
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
192.169.0.0/23 3970 RGnet, Inc.
192.172.0.0/19 721 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 /8:17 /9:3 /10:8 /11:15 /12:74
/13:161 /14:312 /15:595 /16:8434 /17:2611 /18:4467
/19:10472 /20:11361 /21:9377 /22:12790 /23:13798 /24:90360
/25:345 /26:304 /27:168 /28:44 /29:29 /30:69
/31:0 /32:33
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
18566 809 825 Covad Communications
6197 761 933 BellSouth Network Solutions,
7018 695 1491 AT&T WorldNet Services
2386 597 882 AT&T Data Communications Serv
9583 574 756 Sify Limited
27364 546 555 Armstrong Cable Services
4323 538 1128 Time Warner Telecom
7725 468 497 MediaOne
4766 409 591 Korea Telecom (KIX)
5668 401 488 CenturyTel Internet Holdings,
1239 368 882 Sprint
702 365 592 UUNET - Commercial IP service
6198 339 464 BellSouth Network Solutions,
10036 336 346 C&M Communication Co. Ltd.
7011 320 371 Citizens Utilities
9929 293 378 China Netcom Corp.
15270 290 315 PaeTec.net -a division of Pae
6517 284 306 Yipes Communications, Inc.
20115 281 650 Charter Communications
11456 274 312 Carolina Online, Inc.
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:6 8:21 9:1 12:1545 13:1 15:9
16:2 17:3 18:3 20:4 24:1177 30:2
32:69 33:4 38:132 40:53 44:3 47:2
52:4 55:2 56:3 57:24 58:119 59:51
60:66 61:790 62:635 63:1886 64:2772 65:2089
66:2891 67:602 68:539 69:1086 70:123 71:11
72:250 80:592 81:574 82:427 83:280 84:207
85:272 86:37 87:8 128:175 129:172 130:87
131:296 132:38 133:1 134:144 135:43 136:135
137:74 138:168 139:59 140:267 141:104 142:149
143:145 144:192 145:32 146:280 147:107 148:303
149:171 150:108 151:65 152:107 153:88 154:4
155:143 156:74 157:96 158:161 159:167 160:77
161:68 162:211 163:100 164:209 165:179 166:153
167:242 168:435 169:140 170:319 171:8 172:1
190:1 192:5695 193:3195 194:2414 195:1582 196:665
198:3906 199:3289 200:4049 201:187 202:5806 203:6360
204:3776 205:2008 206:2449 207:2815 208:2049 209:3319
210:1718 211:858 212:1231 213:1321 214:266 215:31
216:3455 217:1150 218:207 219:138 220:394 221:235
222:117
End of report
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