Weekly Routing Table Report
Routing Table Analysis
cscora at apnic.net
Fri May 20 18:06:48 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 21 May, 2005
Analysis Summary
----------------
BGP routing table entries examined: 162634
Prefixes after maximum aggregation: 94526
Unique aggregates announced to Internet: 78573
Total ASes present in the Internet Routing Table: 19683
Origin-only ASes present in the Internet Routing Table: 17118
Origin ASes announcing only one prefix: 8031
Transit ASes present in the Internet Routing Table: 2565
Transit-only ASes present in the Internet Routing Table: 72
Average AS path length visible in the Internet Routing Table: 4.5
Max AS path length visible: 23
Prefixes from unregistered ASNs in the Routing Table: 6
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 14
Number of addresses announced to Internet: 1408266304
Equivalent to 83 /8s, 240 /16s and 112 /24s
Percentage of available address space announced: 38.0
Percentage of allocated address space announced: 59.6
Percentage of available address space allocated: 63.7
Total number of prefixes smaller than registry allocations: 76383
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 33381
Total APNIC prefixes after maximum aggregation: 15685
Prefixes being announced from the APNIC address blocks: 31300
Unique aggregates announced from the APNIC address blocks: 15912
APNIC Region origin ASes present in the Internet Routing Table: 2269
APNIC Region origin ASes announcing only one prefix: 664
APNIC Region transit ASes present in the Internet Routing Table: 345
Average APNIC Region AS path length visible: 4.4
Max APNIC Region AS path length visible: 17
Number of APNIC addresses announced to Internet: 183481472
Equivalent to 10 /8s, 239 /16s and 180 /24s
Percentage of available APNIC address space announced: 68.1
APNIC AS Blocks 4608-4864, 7467-7722, 9216-10239, 17408-18431
(pre-ERX allocations) 23552-24575
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: 88143
Total ARIN prefixes after maximum aggregation: 53715
Prefixes being announced from the ARIN address blocks: 68822
Unique aggregates announced from the ARIN address blocks: 25321
ARIN Region origin ASes present in the Internet Routing Table: 9942
ARIN Region origin ASes announcing only one prefix: 3622
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: 18
Number of ARIN addresses announced to Internet: 248514304
Equivalent to 14 /8s, 208 /16s and 7 /24s
Percentage of available ARIN address space announced: 70.5
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, 198/7, 204/6,
208/7 and 216/8
RIPE Region Analysis Summary
----------------------------
Prefixes being announced by RIPE Region ASes: 30758
Total RIPE prefixes after maximum aggregation: 21301
Prefixes being announced from the RIPE address blocks: 27836
Unique aggregates announced from the RIPE address blocks: 18628
RIPE Region origin ASes present in the Internet Routing Table: 6657
RIPE Region origin ASes announcing only one prefix: 3514
RIPE Region transit ASes present in the Internet Routing Table: 1117
Average RIPE Region AS path length visible: 5.2
Max RIPE Region AS path length visible: 23
Number of RIPE addresses announced to Internet: 204993984
Equivalent to 12 /8s, 55 /16s and 245 /24s
Percentage of available RIPE address space announced: 71.9
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: 8707
Total LACNIC prefixes after maximum aggregation: 3058
Prefixes being announced from the LACNIC address blocks: 7114
Unique aggregates announced from the LACNIC address blocks: 4142
LACNIC Region origin ASes present in the Internet Routing Table: 622
LACNIC Region origin ASes announcing only one prefix: 195
LACNIC Region transit ASes present in the Internet Routing Table: 114
Average LACNIC Region AS path length visible: 5.2
Max LACNIC Region AS path length visible: 23
Number of LACNIC addresses announced to Internet: 18896896
Equivalent to 1 /8s, 32 /16s and 88 /24s
Percentage of available LACNIC address space announced: 56.3
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: 1633
Total AfriNIC prefixes after maximum aggregation: 767
Prefixes being announced from the AfriNIC address blocks: 998
Unique aggregates announced from the AfriNIC address blocks: 776
AfriNIC Region origin ASes present in the Internet Routing Table: 125
AfriNIC Region origin ASes announcing only one prefix: 36
AfriNIC Region transit ASes present in the Internet Routing Table: 14
Average AfriNIC Region AS path length visible: 4.6
Max AfriNIC Region AS path length visible: 12
Number of AfriNIC addresses announced to Internet: 2277120
Equivalent to 0 /8s, 34 /16s and 191 /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 908 5141 187 CHINANET-BACKBONE
1221 752 1182 540 Telstra Pty Ltd
9583 730 54 77 Sify Limited
4755 602 246 124 Videsh Sanchar Nigam Ltd. Aut
4766 592 3413 279 Korea Telecom (KIX)
7545 497 88 71 TPG Internet Pty Ltd
17676 431 6509 73 Softbank BB Corp.
9443 370 77 76 Primus Telecommunications
9929 359 197 46 China Netcom Corp.
2907 345 1838 319 SINET Japan
10036 321 29 288 C&M Communication Co. Ltd.
17557 312 22 150 Pakistan Telecom
4808 308 249 168 CNCGROUP IP network: China169
7474 307 270 210 SingTel Optus Pty Ltd
9498 291 83 59 BHARTI BT INTERNET LTD.
4802 286 48 164 Wantree Development
17974 259 65 14 PT TELEKOMUNIKASI INDONESIA
703 256 277 211 UUNET - Commercial IP service
18302 254 107 142 SK Global co., Ltd
2764 252 238 197 AAPT Limited
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
7018 1486 6455 961 AT&T WorldNet Services
174 1170 5609 1001 Cogent Communications
721 1109 21755 312 DLA Systems Automation Center
4323 1108 647 217 Time Warner Telecom
701 1019 8218 858 UUNET Technologies, Inc.
6197 908 380 464 BellSouth Network Solutions,
1239 896 2869 651 Sprint
2386 853 532 634 AT&T Data Communications Serv
18566 812 224 7 Covad Communications
209 655 3521 494 Qwest
20115 596 505 314 Charter Communications
3356 581 10842 438 Level 3 Communications, LLC
27364 565 43 18 Armstrong Cable Services
3561 533 2384 418 Savvis
852 531 1095 391 Telus Advanced Communications
3602 524 123 99 Sprint Canada, Inc.
22773 484 1188 21 Cox Communications, Inc.
5668 473 115 25 CenturyTel Internet Holdings,
6198 468 445 210 BellSouth Network Solutions,
7725 450 60 15 MediaOne
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 595 2003 487 UUNET - Commercial IP service
3320 303 3233 237 Deutsche Telekom AG
3301 294 1084 282 TeliaNet Sweden
8220 274 469 268 COLT Telecommunications
680 253 2041 238 DFN-IP service G-WiN
3246 231 491 226 Song Networks
8708 229 252 213 Romania Data Systems S.A.
1257 200 728 176 SWIPnet Swedish IP Network
5515 178 778 128 Sonera Solution Autonomous Sy
786 176 1794 176 The JANET IP Service
6746 165 47 144 Dynamic Network Technologies,
3269 164 1488 69 TELECOM ITALIA
8866 164 21 11 Bulgarian Telecommunication C
5400 162 285 136 BT Ignite European Backbone
719 160 340 102 LANLINK autonomous system
3300 153 184 86 AUCS Communications Services
6830 137 513 27 UPC Distribution Services
25186 136 137 96 France Telecom Transpac's Tra
9051 131 8 30 INCONET Autonomous System
2856 128 2305 116 BTnet UK Regional network
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
8151 372 598 150 UniNet S.A. de C.V.
16814 266 16 7 NSS, S.A.
11172 218 98 53 Servicios Alestra S.A de C.V
6147 177 102 20 Telefonica Del Peru
11664 157 19 22 Keytech SA
7303 148 68 21 Telecom Argentina Stet-France
14117 136 9 5 Telefonica del Sur S.A.
6505 133 90 89 Global One Communicaoes Ltda
22047 131 96 6 VTR PUNTO NET S.A.
19632 119 14 5 Metropolis Intercom S.A.
13999 113 52 9 Mega Cable S.A. de C.V.
11556 111 55 7 Cable-Wireless Panama
18822 105 7 15 TELEFONICA MANQUEHUE
6503 102 146 72 AVANTEL, S.A.
10481 101 40 7 Prima S.A.
19169 100 6 17 Telconet
22927 97 73 25 TELEFONICA DE ARGENTINA
23216 94 24 23 RAMtelecom Telecomunicaciones
21826 92 12 18 INTERCABLE
11311 89 8 18 Sinectis S.A.
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
3741 268 637 224 The Internet Solution
5536 119 15 17 Internet Egypt Network
20928 93 16 2 Noor Advanced Technologies AS
2018 90 295 86 Tertiary Education Network
8452 81 28 6 TEDATA
2905 74 266 68 The Internetworking Company o
24835 63 34 6 RAYA Telecom - Egypt
6713 59 54 8 Itissalat Al-MAGHRIB
9129 44 3 3 UUNET Kenya
12455 39 6 3 Jambonet Autonomous system
5713 36 142 29 Telkom SA Ltd
15475 32 84 4 Nile Online
15706 31 8 3 Sudatel Internet Exchange Aut
8524 24 1 4 AUCEGYPT Autonomous System
16637 22 10 19 Johnnic e-Ventures
10798 19 1 11 Standard Bank of South Africa
33765 19 3 8 TANZANIA TELECOMMUNICATIONS C
7460 17 3 5 LIA Internet Access
12258 17 3 11 Vodacom Internet Company
21491 17 1 3 UTL On-line is RF broadband I
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
4323 1108 891 Time Warner Telecom
18566 812 805 Covad Communications
721 1109 797 DLA Systems Automation Center
4134 908 721 CHINANET-BACKBONE
9583 730 653 Sify Limited
27364 565 547 Armstrong Cable Services
4755 602 478 Videsh Sanchar Nigam Ltd. Aut
22773 484 463 Cox Communications, Inc.
5668 473 448 CenturyTel Internet Holdings,
6197 908 444 BellSouth Network Solutions,
7725 450 435 MediaOne
7545 497 426 TPG Internet Pty Ltd
3602 524 425 Sprint Canada, Inc.
6467 419 384 E.Spire Communications, Inc.
17676 431 358 Softbank BB Corp.
6140 407 330 ImpSat
4766 592 313 Korea Telecom (KIX)
9929 359 313 China Netcom Corp.
9443 370 294 Primus Telecommunications
20115 596 282 Charter Communications
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
65050 PRIVATE 168.96.148.0/24 6140 ImpSat
64512 PRIVATE 200.61.32.0/23 11664 Keytech SA
64512 PRIVATE 200.61.48.0/20 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
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
172.32.0.0/24 7011 Citizens Utilities
172.122.28.0/24 210 Utah Education Network
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 /8:19 /9:3 /10:8 /11:15 /12:70
/13:154 /14:306 /15:600 /16:8392 /17:2548 /18:4397
/19:10334 /20:11161 /21:9039 /22:12509 /23:13486 /24:88711
/25:288 /26:244 /27:139 /28:64 /29:39 /30:74
/31:0 /32:34
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
18566 796 812 Covad Communications
6197 746 908 BellSouth Network Solutions,
7018 680 1486 AT&T WorldNet Services
2386 603 853 AT&T Data Communications Serv
27364 556 565 Armstrong Cable Services
9583 547 730 Sify Limited
4323 525 1108 Time Warner Telecom
7725 423 450 MediaOne
4766 409 592 Korea Telecom (KIX)
5668 394 473 CenturyTel Internet Holdings,
1239 377 896 Sprint
702 366 595 UUNET - Commercial IP service
6198 340 468 BellSouth Network Solutions,
10036 321 321 C&M Communication Co. Ltd.
6517 299 322 Yipes Communications, Inc.
7011 299 349 Citizens Utilities
6467 297 419 E.Spire Communications, Inc.
9929 280 359 China Netcom Corp.
11456 280 321 Carolina Online, Inc.
15270 264 284 PaeTec.net -a division of Pae
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:3 8:13 12:1548 13:1 15:9 16:2
17:3 18:4 20:4 24:1135 30:2 32:68
33:4 38:117 40:53 44:3 47:2 52:4
55:2 56:3 57:22 58:88 59:37 60:36
61:796 62:610 63:1881 64:2742 65:2068 66:2873
67:575 68:529 69:1027 70:108 71:8 72:197
80:567 81:545 82:410 83:262 84:182 85:202
86:15 128:148 129:174 130:83 131:280 132:36
133:1 134:151 135:40 136:189 137:64 138:169
139:57 140:193 141:105 142:149 143:145 144:186
145:33 146:282 147:106 148:297 149:165 150:97
151:65 152:106 153:86 154:5 155:143 156:78
157:95 158:159 159:169 160:89 161:72 162:205
163:87 164:207 165:174 166:156 167:231 168:424
169:140 170:316 171:8 172:2 192:5717 193:3142
194:2376 195:1554 196:657 198:3931 199:3281 200:3914
201:134 202:5595 203:6211 204:3829 205:2017 206:2473
207:2793 208:2056 209:3286 210:1682 211:826 212:1155
213:1277 214:265 215:30 216:3446 217:1138 218:200
219:106 220:372 221:218 222:103
End of report
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