Weekly Routing Table Report
Routing Table Analysis
cscora at apnic.net
Fri Aug 19 18:06:31 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 20 Aug, 2005
Analysis Summary
----------------
BGP routing table entries examined: 168367
Prefixes after maximum aggregation: 96812
Unique aggregates announced to Internet: 81588
Total ASes present in the Internet Routing Table: 20329
Origin-only ASes present in the Internet Routing Table: 17704
Origin ASes announcing only one prefix: 8371
Transit ASes present in the Internet Routing Table: 2625
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: 26
Prefixes from unregistered ASNs in the Routing Table: 16
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 13
Number of addresses announced to Internet: 1406478101
Equivalent to 83 /8s, 213 /16s and 39 /24s
Percentage of available address space announced: 37.9
Percentage of allocated address space announced: 57.1
Percentage of available address space allocated: 66.4
Total number of prefixes smaller than registry allocations: 79815
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 35021
Total APNIC prefixes after maximum aggregation: 15753
Prefixes being announced from the APNIC address blocks: 32874
Unique aggregates announced from the APNIC address blocks: 16351
APNIC Region origin ASes present in the Internet Routing Table: 2338
APNIC Region origin ASes announcing only one prefix: 694
APNIC Region transit ASes present in the Internet Routing Table: 353
Average APNIC Region AS path length visible: 4.5
Max APNIC Region AS path length visible: 18
Number of APNIC addresses announced to Internet: 192757888
Equivalent to 11 /8s, 125 /16s and 64 /24s
Percentage of available APNIC address space announced: 71.5
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: 90021
Total ARIN prefixes after maximum aggregation: 54880
Prefixes being announced from the ARIN address blocks: 70340
Unique aggregates announced from the ARIN address blocks: 26114
ARIN Region origin ASes present in the Internet Routing Table: 10154
ARIN Region origin ASes announcing only one prefix: 3737
ARIN Region transit ASes present in the Internet Routing Table: 950
Average ARIN Region AS path length visible: 4.3
Max ARIN Region AS path length visible: 20
Number of ARIN addresses announced to Internet: 259664149
Equivalent to 15 /8s, 122 /16s and 41 /24s
Percentage of available ARIN address space announced: 64.5
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: 32420
Total RIPE prefixes after maximum aggregation: 22222
Prefixes being announced from the RIPE address blocks: 29434
Unique aggregates announced from the RIPE address blocks: 19897
RIPE Region origin ASes present in the Internet Routing Table: 7006
RIPE Region origin ASes announcing only one prefix: 3705
RIPE Region transit ASes present in the Internet Routing Table: 1155
Average RIPE Region AS path length visible: 5.2
Max RIPE Region AS path length visible: 26
Number of RIPE addresses announced to Internet: 215202432
Equivalent to 12 /8s, 211 /16s and 186 /24s
Percentage of available RIPE address space announced: 64.1
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: 9230
Total LACNIC prefixes after maximum aggregation: 3169
Prefixes being announced from the LACNIC address blocks: 7587
Unique aggregates announced from the LACNIC address blocks: 4403
LACNIC Region origin ASes present in the Internet Routing Table: 630
LACNIC Region origin ASes announcing only one prefix: 196
LACNIC Region transit ASes present in the Internet Routing Table: 116
Average LACNIC Region AS path length visible: 5.2
Max LACNIC Region AS path length visible: 23
Number of LACNIC addresses announced to Internet: 21470208
Equivalent to 1 /8s, 71 /16s and 156 /24s
Percentage of available LACNIC address space announced: 32.0
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: 1654
Total AfriNIC prefixes after maximum aggregation: 788
Prefixes being announced from the AfriNIC address blocks: 1013
Unique aggregates announced from the AfriNIC address blocks: 781
AfriNIC Region origin ASes present in the Internet Routing Table: 134
AfriNIC Region origin ASes announcing only one prefix: 39
AfriNIC Region transit ASes present in the Internet Routing Table: 16
Average AfriNIC Region AS path length visible: 4.6
Max AfriNIC Region AS path length visible: 12
Number of AfriNIC addresses announced to Internet: 2626816
Equivalent to 0 /8s, 40 /16s and 21 /24s
Percentage of available AfriNIC address space announced: 7.8
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 956 5524 194 CHINANET-BACKBONE
1221 757 1327 526 Telstra Pty Ltd
9583 756 77 14 Sify Limited
4755 700 259 65 Videsh Sanchar Nigam Ltd. Aut
4766 597 3414 281 Korea Telecom (KIX)
7545 498 108 72 TPG Internet Pty Ltd
17676 465 6739 99 Softbank BB Corp.
9443 382 82 77 Primus Telecommunications
9498 341 83 61 BHARTI BT INTERNET LTD.
2907 337 1789 314 SINET Japan
9929 336 223 47 China Netcom Corp.
17557 323 24 149 Pakistan Telecom
7474 315 257 218 SingTel Optus Pty Ltd
17488 308 18 8 Hathway IP Over Cable Interne
18302 298 109 155 SK Global co., Ltd
4802 295 53 157 Wantree Development
9837 276 79 178 Powertel Ltd
703 257 262 208 UUNET - Commercial IP service
17974 254 65 14 PT TELEKOMUNIKASI INDONESIA
9800 250 390 64 CHINA UNICOM
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
7018 1517 6392 982 AT&T WorldNet Services
4323 1149 704 221 Time Warner Telecom
174 1115 5820 1026 Cogent Communications
721 1092 21891 315 DLA Systems Automation Center
701 1002 8154 853 UUNET Technologies, Inc.
6197 942 498 450 BellSouth Network Solutions,
2386 908 529 668 AT&T Data Communications Serv
1239 864 2847 626 Sprint
18566 834 224 7 Covad Communications
20115 638 500 327 Charter Communications
209 627 3470 490 Qwest
3356 574 10661 443 Level 3 Communications, LLC
27364 554 44 18 Armstrong Cable Services
3602 550 125 106 Sprint Canada, Inc.
3561 532 2416 422 Savvis
22773 523 1352 27 Cox Communications, Inc.
5668 501 115 23 CenturyTel Internet Holdings,
6198 472 415 227 BellSouth Network Solutions,
7132 454 4947 388 SBC Internet Services
19262 446 1353 119 Verizon Global Networks
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 593 1999 484 UUNET - Commercial IP service
3301 299 1081 285 TeliaNet Sweden
3320 291 3232 240 Deutsche Telekom AG
8220 262 474 258 COLT Telecommunications
680 245 2041 241 DFN-IP service G-WiN
3246 230 469 223 Song Networks
8708 227 261 213 Romania Data Systems S.A.
1257 198 713 176 SWIPnet Swedish IP Network
5515 181 778 127 Sonera Solution Autonomous Sy
6746 180 49 156 Dynamic Network Technologies,
786 174 1794 174 The JANET IP Service
3269 169 1518 71 TELECOM ITALIA
5400 166 289 140 BT Ignite European Backbone
9121 166 278 42 TTnet Autonomous System
8866 164 20 7 Bulgarian Telecommunication C
3300 155 184 89 AUCS Communications Services
6830 154 665 32 UPC Distribution Services
25186 144 145 101 France Telecom Transpac's Tra
8551 138 120 20 Bezeq International
1273 137 174 96 Cable & Wireless Deutschland
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
8151 387 600 163 UniNet S.A. de C.V.
16814 265 16 7 NSS, S.A.
11172 240 99 57 Servicios Alestra S.A de C.V
6147 193 110 21 Telefonica Del Peru
11664 190 20 23 Keytech SA
14117 152 9 5 Telefonica del Sur S.A.
22047 144 128 7 VTR PUNTO NET S.A.
7303 143 68 15 Telecom Argentina Stet-France
19632 143 14 5 Metropolis Intercom S.A.
11556 131 64 3 Cable-Wireless Panama
6505 130 90 87 Global One Communicaoes Ltda
19169 120 8 26 Telconet
6503 114 147 75 AVANTEL, S.A.
13999 110 52 9 Mega Cable S.A. de C.V.
18822 110 7 14 TELEFONICA MANQUEHUE
21826 103 13 15 INTERCABLE
5639 101 12 9 Telecommunications Services o
10481 100 40 7 Prima S.A.
11311 97 8 14 Sinectis S.A.
23216 95 24 20 RAMtelecom Telecomunicaciones
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
3741 264 685 222 The Internet Solution
5536 122 16 14 Internet Egypt Network
8452 104 32 7 TEDATA
2018 96 295 87 Tertiary Education Network
2905 76 266 68 The Internetworking Company o
20928 57 16 2 Noor Advanced Technologies AS
24835 57 34 6 RAYA Telecom - Egypt
6713 51 54 8 Itissalat Al-MAGHRIB
15475 47 84 4 Nile Online
9129 42 3 3 UUNET Kenya
5713 41 149 32 Telkom SA Ltd
15706 31 8 3 Sudatel Internet Exchange Aut
12455 30 5 6 Jambonet Autonomous system
8524 24 1 4 AUCEGYPT Autonomous System
16637 22 10 19 Johnnic e-Ventures
10798 21 1 12 Standard Bank of South Africa
23889 20 5 9 MAURITIUS TELECOM
12258 17 3 11 Vodacom Internet Company
15804 17 2 1 AS of The Way Out Internet So
15808 17 2 2 Communication Solutions Ltd i
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
4323 1149 928 Time Warner Telecom
18566 834 827 Covad Communications
721 1092 777 DLA Systems Automation Center
4134 956 762 CHINANET-BACKBONE
9583 756 742 Sify Limited
4755 700 635 Videsh Sanchar Nigam Ltd. Aut
27364 554 536 Armstrong Cable Services
22773 523 496 Cox Communications, Inc.
6197 942 492 BellSouth Network Solutions,
5668 501 478 CenturyTel Internet Holdings,
3602 550 444 Sprint Canada, Inc.
7545 498 426 TPG Internet Pty Ltd
17676 465 366 Softbank BB Corp.
6467 436 363 E.Spire Communications, Inc.
19262 446 327 Verizon Global Networks
4766 597 316 Korea Telecom (KIX)
20115 638 311 Charter Communications
11492 316 310 Cable One
9443 382 305 Primus Telecommunications
17488 308 300 Hathway IP Over Cable Interne
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
64826 PRIVATE 64.200.250.0/23 7911 Williams Communicati
65511 PRIVATE 65.77.145.0/24 16605 Aaro Broadband Wirel
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
64943 PRIVATE 202.41.14.0/24 24110 Security Mail Pty Lt
64942 PRIVATE 202.41.15.0/24 24110 Security Mail Pty Lt
24413 UNALLOCATED 202.46.32.0/19 17623 China Netcom Corp.
65005 PRIVATE 203.200.197.0/24 4755 Videsh Sanchar Nigam
65103 PRIVATE 216.53.126.0/23 7270 Net2Phone Corp.
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
192.145.251.0/24 17860 WEBZEN
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 /11:16 /12:76
/13:169 /14:319 /15:604 /16:8488 /17:2683 /18:4569
/19:10631 /20:11623 /21:9653 /22:13083 /23:13962 /24:91392
/25:358 /26:330 /27:193 /28:51 /29:28 /30:77
/31:1 /32:33
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
18566 818 834 Covad Communications
6197 769 942 BellSouth Network Solutions,
7018 722 1517 AT&T WorldNet Services
2386 615 908 AT&T Data Communications Serv
9583 573 756 Sify Limited
4323 548 1149 Time Warner Telecom
27364 545 554 Armstrong Cable Services
4766 415 597 Korea Telecom (KIX)
5668 405 501 CenturyTel Internet Holdings,
702 366 593 UUNET - Commercial IP service
19916 363 370 OLM LLC
1239 359 864 Sprint
6198 345 472 BellSouth Network Solutions,
7011 335 387 Citizens Utilities
11492 308 316 Cable One
6517 301 323 Yipes Communications, Inc.
15270 300 324 PaeTec.net -a division of Pae
6467 290 436 E.Spire Communications, Inc.
18302 283 298 SK Global co., Ltd
701 279 1002 UUNET Technologies, Inc.
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:7 8:23 11:1 12:1569 13:1 15:9
16:2 17:3 18:3 20:5 24:961 30:3
32:70 33:1 38:141 40:56 44:4 47:2
52:4 55:2 56:3 57:23 58:154 59:61
60:109 61:723 62:657 63:1891 64:2832 65:2074
66:2905 67:584 68:579 69:1139 70:170 71:13
72:335 80:595 81:548 82:455 83:296 84:229
85:306 86:82 87:27 128:158 129:167 130:90
131:300 132:36 133:1 134:143 135:42 136:150
137:63 138:163 139:61 140:397 141:104 142:145
143:140 144:190 145:33 146:292 147:110 148:294
149:180 150:107 151:63 152:108 153:89 154:5
155:142 156:76 157:99 158:166 159:167 160:82
161:72 162:216 163:111 164:188 165:195 166:153
167:246 168:437 169:145 170:317 171:8 190:1
192:5743 193:3248 194:2395 195:1579 196:653 198:3880
199:3281 200:4121 201:238 202:6027 203:6387 204:3807
205:2039 206:2460 207:2830 208:2040 209:3343 210:1657
211:752 212:1260 213:1309 214:289 215:35 216:3632
217:1110 218:213 219:163 220:434 221:242 222:116
End of report
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