Weekly Routing Table Report
Routing Table Analysis
cscora at apnic.net
Fri Sep 30 18:06:41 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 01 Oct, 2005
Analysis Summary
----------------
BGP routing table entries examined: 171014
Prefixes after maximum aggregation: 97564
Unique aggregates announced to Internet: 82650
Total ASes present in the Internet Routing Table: 20600
Origin-only ASes present in the Internet Routing Table: 17917
Origin ASes announcing only one prefix: 8499
Transit ASes present in the Internet Routing Table: 2683
Transit-only ASes present in the Internet Routing Table: 74
Average AS path length visible in the Internet Routing Table: 4.5
Max AS path length visible: 28
Prefixes from unregistered ASNs in the Routing Table: 20
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 12
Number of addresses announced to Internet: 1427924992
Equivalent to 85 /8s, 28 /16s and 104 /24s
Percentage of available address space announced: 38.5
Percentage of allocated address space announced: 58.0
Percentage of available address space allocated: 66.4
Total number of prefixes smaller than registry allocations: 81421
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 35620
Total APNIC prefixes after maximum aggregation: 15642
Prefixes being announced from the APNIC address blocks: 33451
Unique aggregates announced from the APNIC address blocks: 16498
APNIC Region origin ASes present in the Internet Routing Table: 2368
APNIC Region origin ASes announcing only one prefix: 695
APNIC Region transit ASes present in the Internet Routing Table: 365
Average APNIC Region AS path length visible: 4.5
Max APNIC Region AS path length visible: 17
Number of APNIC addresses announced to Internet: 201486848
Equivalent to 12 /8s, 2 /16s and 114 /24s
Percentage of available APNIC address space announced: 74.8
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: 90868
Total ARIN prefixes after maximum aggregation: 55367
Prefixes being announced from the ARIN address blocks: 70939
Unique aggregates announced from the ARIN address blocks: 26417
ARIN Region origin ASes present in the Internet Routing Table: 10236
ARIN Region origin ASes announcing only one prefix: 3781
ARIN Region transit ASes present in the Internet Routing Table: 952
Average ARIN Region AS path length visible: 4.3
Max ARIN Region AS path length visible: 17
Number of ARIN addresses announced to Internet: 270880512
Equivalent to 16 /8s, 37 /16s and 79 /24s
Percentage of available ARIN address space announced: 67.3
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: 33185
Total RIPE prefixes after maximum aggregation: 22519
Prefixes being announced from the RIPE address blocks: 30235
Unique aggregates announced from the RIPE address blocks: 20199
RIPE Region origin ASes present in the Internet Routing Table: 7153
RIPE Region origin ASes announcing only one prefix: 3781
RIPE Region transit ASes present in the Internet Routing Table: 1185
Average RIPE Region AS path length visible: 5.1
Max RIPE Region AS path length visible: 28
Number of RIPE addresses announced to Internet: 218879040
Equivalent to 13 /8s, 11 /16s and 212 /24s
Percentage of available RIPE address space announced: 65.2
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, 38912-39935
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: 9576
Total LACNIC prefixes after maximum aggregation: 3223
Prefixes being announced from the LACNIC address blocks: 7931
Unique aggregates announced from the LACNIC address blocks: 4623
LACNIC Region origin ASes present in the Internet Routing Table: 637
LACNIC Region origin ASes announcing only one prefix: 199
LACNIC Region transit ASes present in the Internet Routing Table: 121
Average LACNIC Region AS path length visible: 5.2
Max LACNIC Region AS path length visible: 25
Number of LACNIC addresses announced to Internet: 22020864
Equivalent to 1 /8s, 80 /16s and 3 /24s
Percentage of available LACNIC address space announced: 32.8
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: 1741
Total AfriNIC prefixes after maximum aggregation: 813
Prefixes being announced from the AfriNIC address blocks: 1058
Unique aggregates announced from the AfriNIC address blocks: 805
AfriNIC Region origin ASes present in the Internet Routing Table: 141
AfriNIC Region origin ASes announcing only one prefix: 43
AfriNIC Region transit ASes present in the Internet Routing Table: 20
Average AfriNIC Region AS path length visible: 4.5
Max AfriNIC Region AS path length visible: 12
Number of AfriNIC addresses announced to Internet: 2734592
Equivalent to 0 /8s, 41 /16s and 186 /24s
Percentage of available AfriNIC address space announced: 8.1
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 989 6104 206 CHINANET-BACKBONE
9583 797 77 12 Sify Limited
1221 756 1330 519 Telstra Pty Ltd
4755 721 259 66 Videsh Sanchar Nigam Ltd. Aut
4766 611 3927 291 Korea Telecom (KIX)
7545 509 108 71 TPG Internet Pty Ltd
17676 469 6803 99 Softbank BB Corp.
9443 392 87 78 Primus Telecommunications
2907 338 1763 315 SINET Japan
9498 338 164 59 BHARTI BT INTERNET LTD.
17488 335 20 9 Hathway IP Over Cable Interne
9929 330 224 46 China Netcom Corp.
17557 328 23 160 Pakistan Telecom
7474 312 257 215 SingTel Optus Pty Ltd
4802 307 67 159 Wantree Development
17974 296 66 13 PT TELEKOMUNIKASI INDONESIA
18302 295 109 157 SK Global co., Ltd
9837 273 79 174 Powertel Ltd
18101 255 68 18 Reliance Infocom Ltd Internet
703 253 263 206 UUNET - Commercial IP service
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
7018 1507 6358 985 AT&T WorldNet Services
4323 1178 705 228 Time Warner Telecom
721 1074 21938 309 DLA Systems Automation Center
174 1068 5849 1002 Cogent Communications
701 991 8120 834 UUNET Technologies, Inc.
6197 948 399 483 BellSouth Network Solutions,
2386 921 513 683 AT&T Data Communications Serv
1239 858 2851 603 Sprint
18566 857 240 7 Covad Communications
20115 654 510 327 Charter Communications
209 635 3570 500 Qwest
3356 565 10659 438 Level 3 Communications, LLC
3602 556 131 107 Sprint Canada, Inc.
22773 544 1480 31 Cox Communications, Inc.
3561 538 2409 418 Savvis
6198 474 417 228 BellSouth Network Solutions,
5668 472 115 23 CenturyTel Internet Holdings,
7132 466 4950 398 SBC Internet Services
19262 464 1402 118 Verizon Global Networks
852 437 1092 384 Telus Advanced Communications
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 609 1993 481 UUNET - Commercial IP service
3301 301 1081 287 TeliaNet Sweden
3320 284 3230 237 Deutsche Telekom AG
8220 267 475 262 COLT Telecommunications
680 244 2040 240 DFN-IP service G-WiN
8708 240 264 219 Romania Data Systems S.A.
9121 231 336 26 TTnet Autonomous System
3246 226 474 219 Song Networks
1257 194 712 172 SWIPnet Swedish IP Network
6746 188 50 163 Dynamic Network Technologies,
5515 185 778 127 Sonera Solution Autonomous Sy
3269 176 1606 69 TELECOM ITALIA
786 174 1795 174 The JANET IP Service
5400 168 289 141 BT Ignite European Backbone
8866 162 37 9 Bulgarian Telecommunication C
6830 158 669 33 UPC Distribution Services
3300 155 185 91 AUCS Communications Services
25186 144 145 101 France Telecom Transpac's Tra
3215 140 1205 82 France Telecom Transpac
24863 138 37 6 LINKdotNET AS number
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
8151 402 651 172 UniNet S.A. de C.V.
16814 298 18 7 NSS, S.A.
11172 272 85 63 Servicios Alestra S.A de C.V
11664 204 22 24 Keytech SA
6147 190 116 23 Telefonica Del Peru
19632 183 14 5 Metropolis Intercom S.A.
22047 171 128 7 VTR PUNTO NET S.A.
14117 155 10 5 Telefonica del Sur S.A.
7303 147 70 15 Telecom Argentina Stet-France
11556 132 64 2 Cable-Wireless Panama
19169 132 8 30 Telconet
6505 121 89 85 Global One Communicaoes Ltda
10481 121 48 8 Prima S.A.
13999 116 52 9 Mega Cable S.A. de C.V.
6503 113 148 74 AVANTEL, S.A.
18822 111 7 15 TELEFONICA MANQUEHUE
21826 106 13 15 INTERCABLE
5639 103 12 9 Telecommunications Services o
23216 95 23 18 RAMtelecom Telecomunicaciones
7738 84 346 18 Telecomunicacoes da Bahia S.A
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
3741 266 708 223 The Internet Solution
5536 123 8 12 Internet Egypt Network
8452 108 32 7 TEDATA
2018 96 295 87 Tertiary Education Network
15475 84 84 4 Nile Online
2905 79 211 71 The Internetworking Company o
20928 61 16 2 Noor Advanced Technologies AS
24835 58 34 7 RAYA Telecom - Egypt
6713 51 54 8 Itissalat Al-MAGHRIB
5713 38 149 33 Telkom SA Ltd
12455 36 6 3 Jambonet Autonomous system
15706 31 8 3 Sudatel Internet Exchange Aut
33774 29 3 19 AS Number for Telecom Algeria
8524 24 1 4 AUCEGYPT Autonomous System
16637 23 10 20 Johnnic e-Ventures
10798 22 1 13 Standard Bank of South Africa
21280 21 4 4 Swift Global Kenya Ltd.Is an
23889 20 5 9 MAURITIUS TELECOM
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 1178 950 Time Warner Telecom
18566 857 850 Covad Communications
9583 797 785 Sify Limited
4134 989 783 CHINANET-BACKBONE
721 1074 765 DLA Systems Automation Center
4755 721 655 Videsh Sanchar Nigam Ltd. Aut
22773 544 513 Cox Communications, Inc.
6197 948 465 BellSouth Network Solutions,
3602 556 449 Sprint Canada, Inc.
5668 472 449 CenturyTel Internet Holdings,
7545 509 438 TPG Internet Pty Ltd
17676 469 370 Softbank BB Corp.
19262 464 346 Verizon Global Networks
6467 394 345 E.Spire Communications, Inc.
11492 339 330 Cable One
20115 654 327 Charter Communications
17488 335 326 Hathway IP Over Cable Interne
4766 611 320 Korea Telecom (KIX)
15270 343 315 PaeTec.net -a division of Pae
9443 392 314 Primus Telecommunications
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
65506 PRIVATE 64.151.117.0/24 26228 ServePath, LLC
64826 PRIVATE 64.200.250.0/23 7911 Williams Communicati
64826 PRIVATE 64.200.255.0/24 7911 Williams Communicati
65205 PRIVATE 152.163.5.0/24 2056 America Online
65111 PRIVATE 194.165.131.0/24 8376 GO-JOR Autonomous Sy
65430 PRIVATE 196.44.128.0/19 20459 Telecom Namibia
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
64900 PRIVATE 200.85.68.0/24 17399 Comsat Venezuela, CO
24413 UNALLOCATED 202.46.32.0/19 17623 China Netcom Corp.
18428 UNALLOCATED 203.91.0.0/24 9505 Taiwan Internet Gate
65005 PRIVATE 203.200.197.0/24 4755 Videsh Sanchar Nigam
65103 PRIVATE 216.53.126.0/23 7270 Net2Phone Corp.
65500 PRIVATE 216.216.217.0/24 19029 New Edge Networks
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
192.43.230.0/24 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
192.172.0.0/19 721 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 /9:5 /10:8 /11:17 /12:80
/13:179 /14:326 /15:634 /16:8528 /17:2810 /18:4718
/19:10813 /20:11858 /21:9909 /22:13264 /23:14212 /24:92663
/25:334 /26:296 /27:190 /28:45 /29:14 /30:60
/31:3 /32:31
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
18566 841 857 Covad Communications
6197 775 948 BellSouth Network Solutions,
7018 725 1507 AT&T WorldNet Services
2386 633 921 AT&T Data Communications Serv
9583 622 797 Sify Limited
4323 562 1178 Time Warner Telecom
4766 425 611 Korea Telecom (KIX)
702 385 609 UUNET - Commercial IP service
5668 380 472 CenturyTel Internet Holdings,
1239 366 858 Sprint
7011 366 425 Citizens Utilities
19916 363 369 OLM LLC
6198 347 474 BellSouth Network Solutions,
11492 331 339 Cable One
6517 313 340 Yipes Communications, Inc.
15270 313 343 PaeTec.net -a division of Pae
13609 290 332 Choice One Communications Inc
701 282 991 UUNET Technologies, Inc.
18302 280 295 SK Global co., Ltd
20115 277 654 Charter Communications
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:5 8:24 12:1600 13:1 15:10 16:3
17:3 18:3 20:27 24:564 30:3 32:66
38:157 40:54 44:3 47:2 52:4 55:1
56:3 57:23 58:157 59:67 60:140 61:766
62:764 63:1885 64:2881 65:2079 66:2955 67:634
68:655 69:1232 70:198 71:26 72:392 80:627
81:560 82:473 83:308 84:256 85:336 86:123
87:23 125:9 128:150 129:167 130:96 131:295
132:36 133:1 134:146 135:43 136:151 137:66
138:163 139:63 140:459 141:137 142:148 143:141
144:210 145:34 146:295 147:112 148:303 149:185
150:108 151:73 152:113 153:93 154:5 155:137
156:80 157:111 158:166 159:171 160:86 161:75
162:235 163:131 164:191 165:183 166:152 167:251
168:442 169:143 170:309 171:8 190:1 192:5713
193:3311 194:2410 195:1556 196:673 198:3868 199:3241
200:4171 201:343 202:6106 203:6434 204:3814 205:2041
206:2448 207:2836 208:2040 209:3396 210:1669 211:814
212:1200 213:1376 214:307 215:39 216:3695 217:1135
218:220 219:132 220:493 221:287 222:128
End of report
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