Weekly Routing Table Report
Routing Table Analysis
cscora at apnic.net
Fri Jun 17 18:06:17 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 18 Jun, 2005
Analysis Summary
----------------
BGP routing table entries examined: 165397
Prefixes after maximum aggregation: 95434
Unique aggregates announced to Internet: 79395
Total ASes present in the Internet Routing Table: 19882
Origin-only ASes present in the Internet Routing Table: 17316
Origin ASes announcing only one prefix: 8118
Transit ASes present in the Internet Routing Table: 2566
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: 24
Prefixes from unregistered ASNs in the Routing Table: 17
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 15
Number of addresses announced to Internet: 1401700320
Equivalent to 83 /8s, 140 /16s and 63 /24s
Percentage of available address space announced: 37.8
Percentage of allocated address space announced: 59.4
Percentage of available address space allocated: 63.7
Total number of prefixes smaller than registry allocations: 78031
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 34130
Total APNIC prefixes after maximum aggregation: 15802
Prefixes being announced from the APNIC address blocks: 32016
Unique aggregates announced from the APNIC address blocks: 15851
APNIC Region origin ASes present in the Internet Routing Table: 2291
APNIC Region origin ASes announcing only one prefix: 670
APNIC Region transit ASes present in the Internet Routing Table: 344
Average APNIC Region AS path length visible: 4.4
Max APNIC Region AS path length visible: 17
Number of APNIC addresses announced to Internet: 187147392
Equivalent to 11 /8s, 39 /16s and 164 /24s
Percentage of available APNIC address space announced: 69.4
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: 89145
Total ARIN prefixes after maximum aggregation: 54093
Prefixes being announced from the ARIN address blocks: 69679
Unique aggregates announced from the ARIN address blocks: 25491
ARIN Region origin ASes present in the Internet Routing Table: 10019
ARIN Region origin ASes announcing only one prefix: 3671
ARIN Region transit ASes present in the Internet Routing Table: 937
Average ARIN Region AS path length visible: 4.3
Max ARIN Region AS path length visible: 18
Number of ARIN addresses announced to Internet: 250583808
Equivalent to 14 /8s, 239 /16s and 155 /24s
Percentage of available ARIN address space announced: 71.1
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, 198/7, 204/6,
208/7 and 216/8
RIPE Region Analysis Summary
----------------------------
Prefixes being announced by RIPE Region ASes: 31449
Total RIPE prefixes after maximum aggregation: 21642
Prefixes being announced from the RIPE address blocks: 28502
Unique aggregates announced from the RIPE address blocks: 19126
RIPE Region origin ASes present in the Internet Routing Table: 6755
RIPE Region origin ASes announcing only one prefix: 3554
RIPE Region transit ASes present in the Internet Routing Table: 1118
Average RIPE Region AS path length visible: 5.2
Max RIPE Region AS path length visible: 24
Number of RIPE addresses announced to Internet: 208788800
Equivalent to 12 /8s, 113 /16s and 221 /24s
Percentage of available RIPE address space announced: 73.2
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
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: 8986
Total LACNIC prefixes after maximum aggregation: 3127
Prefixes being announced from the LACNIC address blocks: 7348
Unique aggregates announced from the LACNIC address blocks: 4281
LACNIC Region origin ASes present in the Internet Routing Table: 621
LACNIC Region origin ASes announcing only one prefix: 188
LACNIC Region transit ASes present in the Internet Routing Table: 112
Average LACNIC Region AS path length visible: 5.2
Max LACNIC Region AS path length visible: 21
Number of LACNIC addresses announced to Internet: 20236832
Equivalent to 1 /8s, 52 /16s and 202 /24s
Percentage of available LACNIC address space announced: 60.3
LACNIC AS Blocks 26592-26623, 27648-28671, plus ERX transfers
LACNIC Address Blocks 200/7
AfriNIC Region Analysis Summary
-------------------------------
Prefixes being announced by AfriNIC Region ASes: 1664
Total AfriNIC prefixes after maximum aggregation: 770
Prefixes being announced from the AfriNIC address blocks: 1015
Unique aggregates announced from the AfriNIC address blocks: 781
AfriNIC Region origin ASes present in the Internet Routing Table: 128
AfriNIC Region origin ASes announcing only one prefix: 35
AfriNIC Region transit ASes present in the Internet Routing Table: 16
Average AfriNIC Region AS path length visible: 4.7
Max AfriNIC Region AS path length visible: 12
Number of AfriNIC addresses announced to Internet: 2294272
Equivalent to 0 /8s, 35 /16s and 2 /24s
Percentage of available AfriNIC address space announced: 6.8
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 916 5150 192 CHINANET-BACKBONE
1221 760 1454 542 Telstra Pty Ltd
9583 757 76 13 Sify Limited
4755 632 247 140 Videsh Sanchar Nigam Ltd. Aut
4766 596 3413 279 Korea Telecom (KIX)
7545 500 104 71 TPG Internet Pty Ltd
17676 436 6589 75 Softbank BB Corp.
9443 364 77 76 Primus Telecommunications
9929 356 221 48 China Netcom Corp.
10036 345 65 311 C&M Communication Co. Ltd.
2907 339 1805 316 SINET Japan
9498 321 83 61 BHARTI BT INTERNET LTD.
17557 317 22 152 Pakistan Telecom
7474 312 271 216 SingTel Optus Pty Ltd
4802 282 49 161 Wantree Development
4808 282 245 160 CNCGROUP IP network: China169
17974 265 65 14 PT TELEKOMUNIKASI INDONESIA
18302 261 108 148 SK Global co., Ltd
703 253 276 207 UUNET - Commercial IP service
2764 253 238 199 AAPT Limited
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
7018 1497 6461 974 AT&T WorldNet Services
174 1343 5793 1069 Cogent Communications
4323 1121 647 217 Time Warner Telecom
721 1110 21787 313 DLA Systems Automation Center
701 1010 8168 853 UUNET Technologies, Inc.
6197 927 526 429 BellSouth Network Solutions,
2386 892 527 659 AT&T Data Communications Serv
1239 891 2871 644 Sprint
18566 819 224 7 Covad Communications
20115 644 492 317 Charter Communications
209 631 3506 497 Qwest
27364 565 43 18 Armstrong Cable Services
3356 557 10821 427 Level 3 Communications, LLC
3602 541 123 100 Sprint Canada, Inc.
3561 538 2385 422 Savvis
852 526 1093 388 Telus Advanced Communications
22773 495 1188 23 Cox Communications, Inc.
5668 489 115 25 CenturyTel Internet Holdings,
7725 487 60 15 MediaOne
6198 464 416 218 BellSouth Network Solutions,
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 597 2001 489 UUNET - Commercial IP service
3320 306 3232 242 Deutsche Telekom AG
3301 294 1080 282 TeliaNet Sweden
8220 270 469 266 COLT Telecommunications
680 252 2041 238 DFN-IP service G-WiN
8708 233 254 216 Romania Data Systems S.A.
3246 226 488 221 Song Networks
1257 198 712 174 SWIPnet Swedish IP Network
5515 179 778 129 Sonera Solution Autonomous Sy
786 176 1794 176 The JANET IP Service
6746 169 47 147 Dynamic Network Technologies,
719 168 340 101 LANLINK autonomous system
3269 168 1520 71 TELECOM ITALIA
5400 164 285 137 BT Ignite European Backbone
8866 158 21 11 Bulgarian Telecommunication C
3300 155 184 87 AUCS Communications Services
6830 138 529 28 UPC Distribution Services
9121 136 271 34 TTnet Autonomous System
3352 135 1256 37 Ibernet, Internet Access Netw
25186 135 137 95 France Telecom Transpac's Tra
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
8151 404 601 166 UniNet S.A. de C.V.
16814 264 16 12 NSS, S.A.
11172 219 98 53 Servicios Alestra S.A de C.V
11664 198 19 23 Keytech SA
6147 197 110 21 Telefonica Del Peru
14117 152 9 5 Telefonica del Sur S.A.
7303 149 68 21 Telecom Argentina Stet-France
6505 132 90 89 Global One Communicaoes Ltda
22047 131 96 6 VTR PUNTO NET S.A.
11556 130 64 3 Cable-Wireless Panama
19632 109 14 5 Metropolis Intercom S.A.
13999 107 52 9 Mega Cable S.A. de C.V.
18822 107 7 13 TELEFONICA MANQUEHUE
19169 105 7 20 Telconet
10481 101 40 7 Prima S.A.
6503 100 146 72 AVANTEL, S.A.
21826 95 13 20 INTERCABLE
22927 95 73 25 TELEFONICA DE ARGENTINA
5639 94 12 9 Telecommunications Services o
23216 93 24 23 RAMtelecom Telecomunicaciones
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
3741 266 637 223 The Internet Solution
5536 119 15 17 Internet Egypt Network
20928 95 16 1 Noor Advanced Technologies AS
2018 91 295 86 Tertiary Education Network
8452 82 28 6 TEDATA
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 34 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
33765 20 3 8 TANZANIA TELECOMMUNICATIONS C
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
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
4323 1121 904 Time Warner Telecom
18566 819 812 Covad Communications
721 1110 797 DLA Systems Automation Center
9583 757 744 Sify Limited
4134 916 724 CHINANET-BACKBONE
27364 565 547 Armstrong Cable Services
6197 927 498 BellSouth Network Solutions,
4755 632 492 Videsh Sanchar Nigam Ltd. Aut
22773 495 472 Cox Communications, Inc.
7725 487 472 MediaOne
5668 489 464 CenturyTel Internet Holdings,
3602 541 441 Sprint Canada, Inc.
7545 500 429 TPG Internet Pty Ltd
6467 427 393 E.Spire Communications, Inc.
17676 436 361 Softbank BB Corp.
6140 403 330 ImpSat
20115 644 327 Charter Communications
4766 596 317 Korea Telecom (KIX)
9929 356 308 China Netcom Corp.
19262 405 301 Verizon Global Networks
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
65050 PRIVATE 168.96.148.0/24 6140 ImpSat
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
64512 PRIVATE 200.61.62.0/23 11664 Keytech SA
64512 PRIVATE 200.80.154.0/23 11664 Keytech SA
65005 PRIVATE 203.200.197.0/24 4755 Videsh Sanchar Nigam
65444 PRIVATE 212.25.125.0/24 8551 Bezeq International
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
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 /8:18 /9:3 /10:8 /11:15 /12:73
/13:159 /14:310 /15:592 /16:8424 /17:2593 /18:4439
/19:10410 /20:11300 /21:9265 /22:12739 /23:13788 /24:90295
/25:338 /26:290 /27:166 /28:42 /29:28 /30:69
/31:0 /32:33
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
18566 803 819 Covad Communications
6197 755 927 BellSouth Network Solutions,
7018 688 1497 AT&T WorldNet Services
2386 607 892 AT&T Data Communications Serv
9583 574 757 Sify Limited
27364 556 565 Armstrong Cable Services
4323 542 1121 Time Warner Telecom
7725 458 487 MediaOne
4766 414 596 Korea Telecom (KIX)
5668 403 489 CenturyTel Internet Holdings,
1239 379 891 Sprint
702 369 597 UUNET - Commercial IP service
6198 338 464 BellSouth Network Solutions,
10036 335 345 C&M Communication Co. Ltd.
7011 304 354 Citizens Utilities
6467 294 427 E.Spire Communications, Inc.
15270 282 304 PaeTec.net -a division of Pae
20115 280 644 Charter Communications
9929 275 356 China Netcom Corp.
174 274 1343 Cogent Communications
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:4 8:15 12:1547 13:1 15:9 16:2
17:3 18:3 20:4 24:1172 30:2 32:69
33:4 38:131 40:54 44:3 47:2 52:4
55:2 56:3 57:27 58:91 59:47 60:54
61:784 62:625 63:1874 64:2775 65:2085 66:2908
67:586 68:537 69:1048 70:116 71:9 72:232
80:584 81:557 82:429 83:274 84:207 85:252
86:24 128:186 129:172 130:87 131:296 132:38
133:1 134:145 135:39 136:133 137:69 138:168
139:60 140:195 141:99 142:149 143:145 144:192
145:33 146:286 147:108 148:315 149:171 150:105
151:65 152:107 153:87 154:5 155:142 156:78
157:97 158:160 159:172 160:77 161:69 162:326
163:92 164:211 165:179 166:156 167:237 168:427
169:140 170:311 171:8 172:1 192:5727 193:3185
194:2401 195:1559 196:660 198:3926 199:3323 200:4004
201:169 202:5822 203:6343 204:3800 205:2051 206:2531
207:2841 208:2058 209:3319 210:1709 211:842 212:1219
213:1319 214:255 215:32 216:3502 217:1152 218:207
219:108 220:391 221:232 222:110
End of report
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