Routing Table Report 04:00 +10GMT Thu 11 Aug, 2005
Analysis Summary
----------------
BGP routing table entries examined: 168087
Prefixes after maximum aggregation: 96636
Unique aggregates announced to Internet: 81272
Total ASes present in the Internet Routing Table: 20275
Origin-only ASes present in the Internet Routing Table: 17681
Origin ASes announcing only one prefix: 8353
Transit ASes present in the Internet Routing Table: 2594
Transit-only ASes present in the Internet Routing Table: 73
Average AS path length visible in the Internet Routing Table: 4.6
Max AS path length visible: 26
Prefixes from unregistered ASNs in the Routing Table: 21
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 13
Number of addresses announced to Internet: 1402070037
Equivalent to 83 /8s, 145 /16s and 228 /24s
Percentage of available address space announced: 37.8
Percentage of allocated address space announced: 57.0
Percentage of available address space allocated: 66.4
Total number of prefixes smaller than registry allocations: 79736
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 34939
Total APNIC prefixes after maximum aggregation: 15761
Prefixes being announced from the APNIC address blocks: 32781
Unique aggregates announced from the APNIC address blocks: 16298
APNIC Region origin ASes present in the Internet Routing Table: 2329
APNIC Region origin ASes announcing only one prefix: 689
APNIC Region transit ASes present in the Internet Routing Table: 344
Average APNIC Region AS path length visible: 4.5
Max APNIC Region AS path length visible: 17
Number of APNIC addresses announced to Internet: 192727680
Equivalent to 11 /8s, 124 /16s and 202 /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: 89804
Total ARIN prefixes after maximum aggregation: 54762
Prefixes being announced from the ARIN address blocks: 70199
Unique aggregates announced from the ARIN address blocks: 25971
ARIN Region origin ASes present in the Internet Routing Table: 10147
ARIN Region origin ASes announcing only one prefix: 3752
ARIN Region transit ASes present in the Internet Routing Table: 941
Average ARIN Region AS path length visible: 4.3
Max ARIN Region AS path length visible: 20
Number of ARIN addresses announced to Internet: 256051989
Equivalent to 15 /8s, 67 /16s and 11 /24s
Percentage of available ARIN address space announced: 63.6
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: 32462
Total RIPE prefixes after maximum aggregation: 22154
Prefixes being announced from the RIPE address blocks: 29464
Unique aggregates announced from the RIPE address blocks: 19806
RIPE Region origin ASes present in the Internet Routing Table: 6969
RIPE Region origin ASes announcing only one prefix: 3678
RIPE Region transit ASes present in the Internet Routing Table: 1139
Average RIPE Region AS path length visible: 5.2
Max RIPE Region AS path length visible: 26
Number of RIPE addresses announced to Internet: 214892928
Equivalent to 12 /8s, 207 /16s and 1 /24s
Percentage of available RIPE address space announced: 64.0
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: 9201
Total LACNIC prefixes after maximum aggregation: 3172
Prefixes being announced from the LACNIC address blocks: 7564
Unique aggregates announced from the LACNIC address blocks: 4417
LACNIC Region origin ASes present in the Internet Routing Table: 631
LACNIC Region origin ASes announcing only one prefix: 196
LACNIC Region transit ASes present in the Internet Routing Table: 117
Average LACNIC Region AS path length visible: 5.1
Max LACNIC Region AS path length visible: 23
Number of LACNIC addresses announced to Internet: 20816896
Equivalent to 1 /8s, 61 /16s and 164 /24s
Percentage of available LACNIC address space announced: 31.0
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: 787
Prefixes being announced from the AfriNIC address blocks: 1011
Unique aggregates announced from the AfriNIC address blocks: 771
AfriNIC Region origin ASes present in the Internet Routing Table: 134
AfriNIC Region origin ASes announcing only one prefix: 38
AfriNIC Region transit ASes present in the Internet Routing Table: 16
Average AfriNIC Region AS path length visible: 4.5
Max AfriNIC Region AS path length visible: 12
Number of AfriNIC addresses announced to Internet: 2358016
Equivalent to 0 /8s, 35 /16s and 251 /24s
Percentage of available AfriNIC address space announced: 7.0
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 5522 193 CHINANET-BACKBONE
1221 769 1327 527 Telstra Pty Ltd
9583 748 77 14 Sify Limited
4755 679 259 65 Videsh Sanchar Nigam Ltd. Aut
4766 593 3413 279 Korea Telecom (KIX)
7545 515 108 72 TPG Internet Pty Ltd
17676 464 6723 99 Softbank BB Corp.
9443 382 82 77 Primus Telecommunications
9929 344 224 46 China Netcom Corp.
9498 339 83 63 BHARTI BT INTERNET LTD.
2907 338 1789 315 SINET Japan
17557 326 23 152 Pakistan Telecom
7474 316 273 217 SingTel Optus Pty Ltd
17488 306 18 8 Hathway IP Over Cable Interne
4802 299 53 165 Wantree Development
18302 294 109 157 SK Global co., Ltd
9837 277 79 180 Powertel Ltd
17974 263 65 14 PT TELEKOMUNIKASI INDONESIA
703 253 262 206 UUNET - Commercial IP service
9800 250 390 64 CHINA UNICOM
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
7018 1505 6403 976 AT&T WorldNet Services
4323 1145 704 221 Time Warner Telecom
174 1132 5821 1040 Cogent Communications
721 1082 21779 312 DLA Systems Automation Center
701 1009 8156 858 UUNET Technologies, Inc.
6197 940 497 447 BellSouth Network Solutions,
2386 889 528 653 AT&T Data Communications Serv
1239 870 2863 628 Sprint
18566 833 224 7 Covad Communications
20115 654 502 324 Charter Communications
209 618 3470 488 Qwest
3356 584 10681 446 Level 3 Communications, LLC
27364 554 44 18 Armstrong Cable Services
3602 550 125 106 Sprint Canada, Inc.
3561 534 2385 421 Savvis
22773 509 1316 22 Cox Communications, Inc.
5668 501 115 23 CenturyTel Internet Holdings,
6198 467 396 224 BellSouth Network Solutions,
7132 450 4691 385 SBC Internet Services
852 446 1093 384 Telus Advanced Communications
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 591 1999 482 UUNET - Commercial IP service
3301 299 1081 285 TeliaNet Sweden
3320 292 3232 241 Deutsche Telekom AG
8220 263 474 259 COLT Telecommunications
680 245 2041 241 DFN-IP service G-WiN
3246 230 469 223 Song Networks
8708 228 262 214 Romania Data Systems S.A.
1257 197 712 175 SWIPnet Swedish IP Network
5515 181 778 127 Sonera Solution Autonomous Sy
6746 179 49 155 Dynamic Network Technologies,
5400 177 289 149 BT Ignite European Backbone
786 174 1794 174 The JANET IP Service
3269 170 1520 72 TELECOM ITALIA
719 169 340 100 LANLINK autonomous system
8866 163 20 7 Bulgarian Telecommunication C
9121 157 275 44 TTnet Autonomous System
6830 155 665 32 UPC Distribution Services
3300 154 184 89 AUCS Communications Services
25186 144 145 101 France Telecom Transpac's Tra
8551 139 120 20 Bezeq International
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
8151 380 599 160 UniNet S.A. de C.V.
16814 265 16 7 NSS, S.A.
11172 242 99 59 Servicios Alestra S.A de C.V
6147 192 110 21 Telefonica Del Peru
11664 181 20 23 Keytech SA
14117 152 9 5 Telefonica del Sur S.A.
7303 145 69 16 Telecom Argentina Stet-France
19632 143 14 5 Metropolis Intercom S.A.
22047 143 112 7 VTR PUNTO NET 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 111 52 9 Mega Cable S.A. de C.V.
18822 110 7 14 TELEFONICA MANQUEHUE
21826 102 13 19 INTERCABLE
10481 101 40 7 Prima S.A.
5639 100 12 9 Telecommunications Services o
11311 98 8 14 Sinectis S.A.
23216 96 24 21 RAMtelecom Telecomunicaciones
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
3741 263 621 221 The Internet Solution
5536 120 15 17 Internet Egypt Network
8452 102 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 39 148 31 Telkom SA Ltd
12455 37 6 3 Jambonet Autonomous system
15706 31 8 3 Sudatel Internet Exchange Aut
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
15808 17 2 2 Communication Solutions Ltd i
21491 17 1 1 UTL On-line is RF broadband I
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
4323 1145 924 Time Warner Telecom
18566 833 826 Covad Communications
721 1082 770 DLA Systems Automation Center
4134 956 763 CHINANET-BACKBONE
9583 748 734 Sify Limited
4755 679 614 Videsh Sanchar Nigam Ltd. Aut
27364 554 536 Armstrong Cable Services
6197 940 493 BellSouth Network Solutions,
22773 509 487 Cox Communications, Inc.
5668 501 478 CenturyTel Internet Holdings,
3602 550 444 Sprint Canada, Inc.
7545 515 443 TPG Internet Pty Ltd
17676 464 365 Softbank BB Corp.
6467 435 362 E.Spire Communications, Inc.
20115 654 330 Charter Communications
19262 443 324 Verizon Global Networks
4766 593 314 Korea Telecom (KIX)
11492 314 308 Cable One
9443 382 305 Primus Telecommunications
9929 344 298 China Netcom Corp.
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
65511 PRIVATE 65.77.146.0/24 16605 Aaro Broadband Wirel
65511 PRIVATE 65.77.147.0/24 16605 Aaro Broadband Wirel
65511 PRIVATE 65.77.151.0/24 16605 Aaro Broadband Wirel
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
64512 PRIVATE 200.61.48.0/20 11664 Keytech SA
64512 PRIVATE 200.61.58.0/23 11664 Keytech SA
64512 PRIVATE 200.80.148.0/23 11664 Keytech SA
64943 PRIVATE 202.41.14.0/24 24110 Security Mail Pty Lt
64942 PRIVATE 202.41.15.0/24 24110 Security Mail Pty Lt
65005 PRIVATE 203.200.197.0/24 4755 Videsh Sanchar Nigam
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
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 /9:3 /10:8 /11:16 /12:74
/13:167 /14:318 /15:607 /16:8470 /17:2682 /18:4559
/19:10585 /20:11613 /21:9649 /22:13050 /23:13947 /24:91264
/25:373 /26:315 /27:180 /28:49 /29:28 /30:77
/31:0 /32:36
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
18566 817 833 Covad Communications
6197 767 940 BellSouth Network Solutions,
7018 707 1505 AT&T WorldNet Services
2386 600 889 AT&T Data Communications Serv
9583 565 748 Sify Limited
4323 546 1145 Time Warner Telecom
27364 545 554 Armstrong Cable Services
4766 411 593 Korea Telecom (KIX)
5668 405 501 CenturyTel Internet Holdings,
702 364 591 UUNET - Commercial IP service
19916 363 370 OLM LLC
1239 361 870 Sprint
6198 342 467 BellSouth Network Solutions,
7011 327 379 Citizens Utilities
11492 306 314 Cable One
15270 298 322 PaeTec.net -a division of Pae
6517 297 319 Yipes Communications, Inc.
6467 289 435 E.Spire Communications, Inc.
20115 284 654 Charter Communications
18302 279 294 SK Global co., Ltd
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:7 8:23 12:1558 13:1 15:9 16:2
17:3 18:3 20:5 24:972 30:2 32:70
33:1 38:140 40:55 44:4 47:2 52:4
55:2 56:3 57:23 58:148 59:58 60:106
61:724 62:682 63:1887 64:2823 65:2106 66:2930
67:584 68:571 69:1142 70:156 71:13 72:297
80:597 81:555 82:445 83:291 84:227 85:296
86:76 87:25 128:155 129:168 130:88 131:294
132:38 133:1 134:146 135:42 136:149 137:70
138:162 139:61 140:401 141:105 142:145 143:141
144:194 145:34 146:291 147:110 148:284 149:177
150:107 151:63 152:108 153:89 154:5 155:141
156:76 157:99 158:167 159:168 160:82 161:71
162:219 163:97 164:189 165:192 166:154 167:244
168:437 169:145 170:306 171:8 172:1 190:1
192:5738 193:3248 194:2422 195:1581 196:651 198:3876
199:3289 200:4111 201:236 202:5980 203:6390 204:3787
205:2037 206:2456 207:2832 208:2059 209:3351 210:1640
211:743 212:1258 213:1326 214:268 215:32 216:3612
217:1108 218:212 219:189 220:422 221:236 222:121
End of report
