Routing Table Report 04:00 +10GMT Wed 23 Mar, 2005
Analysis Summary
----------------
BGP routing table entries examined: 158253
Prefixes after maximum aggregation: 92397
Unique aggregates announced to Internet: 76122
Total ASes present in the Internet Routing Table: 19209
Origin-only ASes present in the Internet Routing Table: 16708
Origin ASes announcing only one prefix: 7786
Transit ASes present in the Internet Routing Table: 2501
Transit-only ASes present in the Internet Routing Table: 76
Average AS path length visible in the Internet Routing Table: 4.5
Max AS path length visible: 21
Prefixes from unregistered ASNs in the Routing Table: 27
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 13
Number of addresses announced to Internet: 1387171364
Equivalent to 82 /8s, 174 /16s and 142 /24s
Percentage of available address space announced: 37.4
Percentage of allocated address space announced: 59.2
Percentage of available address space allocated: 63.2
Total number of prefixes smaller than registry allocations: 73832
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 32002
Total APNIC prefixes after maximum aggregation: 15258
Prefixes being announced from the APNIC address blocks: 29919
Unique aggregates announced from the APNIC address blocks: 15257
APNIC Region origin ASes present in the Internet Routing Table: 2228
APNIC Region origin ASes announcing only one prefix: 648
APNIC Region transit ASes present in the Internet Routing Table: 335
Average APNIC Region AS path length visible: 4.4
Max APNIC Region AS path length visible: 15
Number of APNIC addresses announced to Internet: 178987904
Equivalent to 10 /8s, 171 /16s and 35 /24s
Percentage of available APNIC address space announced: 66.4
APNIC AS Blocks 4608-4864, 7467-7722, 9216-10239, 17408-18431
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: 87772
Total ARIN prefixes after maximum aggregation: 53327
Prefixes being announced from the ARIN address blocks: 67201
Unique aggregates announced from the ARIN address blocks: 24681
ARIN Region origin ASes present in the Internet Routing Table: 9961
ARIN Region origin ASes announcing only one prefix: 3606
ARIN Region transit ASes present in the Internet Routing Table: 955
Average ARIN Region AS path length visible: 4.3
Max ARIN Region AS path length visible: 17
Number of ARIN addresses announced to Internet: 242290432
Equivalent to 14 /8s, 113 /16s and 15 /24s
Percentage of available ARIN address space announced: 72.2
ARIN AS Blocks 1-1876, 1902-2042, 2044-2046, 2048-2106
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
ARIN Address Blocks 24/8, 63/8, 64/6, 68/7, 70/7, 72/8, 198/7, 204/6,
208/7 and 216/8
RIPE Region Analysis Summary
----------------------------
Prefixes being announced by RIPE Region ASes: 30142
Total RIPE prefixes after maximum aggregation: 20696
Prefixes being announced from the RIPE address blocks: 27152
Unique aggregates announced from the RIPE address blocks: 17965
RIPE Region origin ASes present in the Internet Routing Table: 6427
RIPE Region origin ASes announcing only one prefix: 3384
RIPE Region transit ASes present in the Internet Routing Table: 1084
Average RIPE Region AS path length visible: 5.1
Max RIPE Region AS path length visible: 19
Number of RIPE addresses announced to Internet: 195344336
Equivalent to 11 /8s, 164 /16s and 183 /24s
Percentage of available RIPE address space announced: 68.5
RIPE AS Blocks 1877-1901, 2043, 2047, 2107-2136, 2585-2614
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: 6936
Total LACNIC prefixes after maximum aggregation: 2419
Prefixes being announced from the LACNIC address blocks: 6910
Unique aggregates announced from the LACNIC address blocks: 3987
LACNIC Region origin ASes present in the Internet Routing Table: 427
LACNIC Region origin ASes announcing only one prefix: 126
LACNIC Region transit ASes present in the Internet Routing Table: 82
Average LACNIC Region AS path length visible: 5.1
Max LACNIC Region AS path length visible: 21
Number of LACNIC addresses announced to Internet: 17796352
Equivalent to 1 /8s, 15 /16s and 141 /24s
Percentage of available LACNIC address space announced: 53.0
LACNIC AS Blocks 26592-26623, 27648-28671
LACNIC Address Blocks 200/7
Emerging AfriNIC Region Analysis Summary
----------------------------------------
Prefixes being announced by AfriNIC Region ASes: 1376
Total AfriNIC prefixes after maximum aggregation: 697
Prefixes being announced from the AfriNIC address blocks: 903
Unique aggregates announced from the AfriNIC address blocks: 718
AfriNIC Region origin ASes present in the Internet Routing Table: 95
AfriNIC Region origin ASes announcing only one prefix: 22
AfriNIC Region transit ASes present in the Internet Routing Table: 14
Average AfriNIC Region AS path length visible: 4.5
Max AfriNIC Region AS path length visible: 12
Number of AfriNIC addresses announced to Internet: 2187520
Equivalent to 0 /8s, 33 /16s and 97 /24s
Percentage of available AfriNIC address space announced: 13.0
AfriNIC AS Blocks <none>
AfriNIC Address Blocks 196/8
APNIC Region per AS prefix count summary
----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
4134 892 4761 177 CHINANET-BACKBONE
1221 787 1191 559 Telstra Pty Ltd
9583 627 50 31 Sify Limited
4766 582 3415 276 Korea Telecom (KIX)
4755 498 242 103 Videsh Sanchar Nigam Ltd. Aut
7545 478 86 70 TPG Internet Pty Ltd
17676 420 6348 78 Softbank BB Corp.
9443 374 77 79 Primus Telecommunications
17557 358 25 158 Pakistan Telecom
9929 357 174 50 China Netcom Corp.
2907 347 1823 321 SINET Japan
10036 305 28 278 C&M Communication Co. Ltd.
4808 300 247 161 CNCGROUP IP network: China169
7474 290 267 210 SingTel Optus Pty Ltd
4802 282 47 166 Wantree Development
9498 261 82 53 BHARTI BT INTERNET LTD.
2764 256 238 204 AAPT Limited
703 249 279 207 UUNET - Commercial IP service
9800 235 386 69 CHINA UNICOM
17974 234 63 12 PT TELEKOMUNIKASI INDONESIA
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
7018 1469 6562 964 AT&T WorldNet Services
721 1119 21763 314 DLA Systems Automation Center
4323 1082 663 224 Time Warner Telecom
701 1027 8288 873 UUNET Technologies, Inc.
174 924 5569 783 Cogent Communications
1239 914 2868 660 Sprint
6197 879 383 411 BellSouth Network Solutions,
2386 832 500 613 AT&T Data Communications Serv
18566 779 208 6 Covad Communications
209 639 3476 501 Qwest
20115 589 489 306 Charter Communications
3356 577 10863 428 Level 3 Communications, LLC
852 542 1095 401 Telus Advanced Communications
3561 538 2370 414 Savvis
3602 506 121 93 Sprint Canada, Inc.
6478 500 833 108 AT&T Worldnet Services
22773 482 1218 25 Cox Communications, Inc.
6198 469 554 196 BellSouth Network Solutions,
27364 465 43 18 Armstrong Cable Services
5668 460 115 17 CenturyTel Internet Holdings,
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 605 2005 495 UUNET - Commercial IP service
3320 296 2992 231 Deutsche Telekom AG
3301 290 1116 280 TeliaNet Sweden
8220 276 466 270 COLT Telecommunications
680 254 2041 239 DFN-IP service G-WiN
3246 230 475 224 Song Networks
8708 227 251 205 Romania Data Systems S.A.
13083 218 51 8 Mannesmann Datenverarbeitung
9121 202 238 43 TTnet Autonomous System
1257 200 711 176 SWIPnet Swedish IP Network
5515 178 778 128 Sonera Solution Autonomous Sy
786 176 1794 176 The JANET IP Service
8866 173 19 20 Bulgarian Telecommunication C
3269 166 1456 72 TELECOM ITALIA
6746 162 47 142 Dynamic Network Technologies,
719 157 322 99 LANLINK autonomous system
3300 153 184 86 AUCS Communications Services
6830 143 529 28 UPC Distribution Services
5400 142 281 124 BT Ignite European Backbone
25186 142 138 100 France Telecom Transpac's Tra
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
6140 385 140 72 ImpSat
8151 340 489 142 UniNet S.A. de C.V.
16814 233 14 6 NSS, S.A.
11172 213 99 52 Servicios Alestra S.A de C.V
6147 204 100 22 Telefonica Del Peru
11664 148 19 23 Keytech SA
7303 147 67 31 Telecom Argentina Stet-France
6505 132 90 88 Global One Communicaoes Ltda
14117 118 7 5 Telefonica del Sur S.A.
11992 107 9 31 Integrated Systems
6503 103 145 73 AVANTEL, S.A.
13999 100 52 9 Mega Cable S.A. de C.V.
11556 98 49 4 Cable-Wireless Panama
6535 87 7 23 Chilesat Servicios Empresari
11311 86 8 22 Sinectis S.A.
5639 84 12 9 Telecommunications Services o
10481 80 32 7 Prima S.A.
4270 77 18 9 Red de Interconexion Universi
15311 77 24 36 Telefonica Empresas
7738 75 298 16 Telecomunicacoes da Bahia S.A
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
3741 268 635 225 The Internet Solution
5536 114 15 18 Internet Egypt Network
2018 90 295 87 Tertiary Education Network
20928 90 16 2 Noor Advanced Technologies AS
2905 74 266 68 The Internetworking Company o
24835 58 34 6 RAYA Telecom - Egypt
8452 55 20 5 TEDATA
12455 42 7 4 Jambonet Autonomous system
9129 39 3 2 UUNET Kenya
6713 35 54 9 Itissalat Al-MAGHRIB
5713 27 141 24 Telkom SA Ltd
8524 24 1 4 AUCEGYPT Autonomous System
16637 22 10 19 Johnnic e-Ventures
10798 19 1 11 Standard Bank of South Africa
8346 18 10 11 SONATEL-AS Autonomous System
12258 18 3 12 Vodacom Internet Company
21280 18 2 3 Swift Global Kenya Ltd.Is an
15808 16 1 1 Communication Solutions Ltd i
21491 16 1 3 UTL On-line is RF broadband I
15706 15 4 2 Sudatel Internet Exchange Aut
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
4323 1082 858 Time Warner Telecom
721 1119 805 DLA Systems Automation Center
18566 779 773 Covad Communications
4134 892 715 CHINANET-BACKBONE
9583 627 596 Sify Limited
6197 879 468 BellSouth Network Solutions,
22773 482 457 Cox Communications, Inc.
27364 465 447 Armstrong Cable Services
5668 460 443 CenturyTel Internet Holdings,
3602 506 413 Sprint Canada, Inc.
7545 478 408 TPG Internet Pty Ltd
4755 498 395 Videsh Sanchar Nigam Ltd. Aut
6478 500 392 AT&T Worldnet Services
6467 408 375 E.Spire Communications, Inc.
17676 420 342 Softbank BB Corp.
6140 385 313 ImpSat
9929 357 307 China Netcom Corp.
4766 582 306 Korea Telecom (KIX)
9443 374 295 Primus Telecommunications
20115 589 283 Charter Communications
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
65535 PRIVATE 64.111.161.0/24 33205 KMC Telecom Solution
65535 PRIVATE 64.111.162.0/24 33205 KMC Telecom Solution
65535 PRIVATE 64.111.164.0/24 33205 KMC Telecom Solution
65535 PRIVATE 64.111.165.0/24 33205 KMC Telecom Solution
65535 PRIVATE 64.111.167.0/24 33205 KMC Telecom Solution
65535 PRIVATE 64.111.169.0/24 33205 KMC Telecom Solution
65535 PRIVATE 64.111.170.0/24 33205 KMC Telecom Solution
65535 PRIVATE 64.111.171.0/24 33205 KMC Telecom Solution
65535 PRIVATE 64.111.172.0/24 33205 KMC Telecom Solution
65535 PRIVATE 64.111.173.0/24 33205 KMC Telecom Solution
65535 PRIVATE 64.111.174.0/24 33205 KMC Telecom Solution
65535 PRIVATE 64.111.175.0/24 33205 KMC Telecom Solution
64826 PRIVATE 64.200.250.0/23 7911 Williams Communicati
30998 UNALLOCATED 65.120.56.0/21 209 Qwest
40439 UNALLOCATED 66.194.101.0/24 30439 Memphis Daily News
64500 RESERVED 85.114.96.0/21 1680 NetVision Ltd.
65503 PRIVATE 193.125.183.0/24 3217 SIMBIRSK
30998 UNALLOCATED 196.207.0.0/20 209 Qwest
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
33267 UNALLOCATED 206.205.135.0/24 2828 XO Communications
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 /8:19 /9:3 /10:8 /11:14 /12:62
/13:152 /14:305 /15:574 /16:8322 /17:2485 /18:4191
/19:10137 /20:10846 /21:8728 /22:12109 /23:13185 /24:86242
/25:264 /26:259 /27:129 /28:62 /29:25 /30:89
/31:0 /32:43
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
18566 764 779 Covad Communications
6197 720 879 BellSouth Network Solutions,
7018 641 1469 AT&T WorldNet Services
2386 586 832 AT&T Data Communications Serv
4323 503 1082 Time Warner Telecom
27364 450 465 Armstrong Cable Services
9583 448 627 Sify Limited
4766 399 582 Korea Telecom (KIX)
5668 383 460 CenturyTel Internet Holdings,
1239 378 914 Sprint
702 368 605 UUNET - Commercial IP service
6198 337 469 BellSouth Network Solutions,
10036 305 305 C&M Communication Co. Ltd.
6467 304 408 E.Spire Communications, Inc.
6517 289 311 Yipes Communications, Inc.
9929 281 357 China Netcom Corp.
7011 280 329 Citizens Utilities
11456 263 310 Carolina Online, Inc.
701 250 1027 UUNET Technologies, Inc.
15270 247 266 PaeTec.net -a division of Pae
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:4 8:10 12:1508 13:1 15:9 16:2
17:3 18:4 20:4 24:740 32:64 33:4
38:102 40:55 44:3 47:2 52:3 55:2
56:3 57:23 58:4 59:12 60:25 61:744
62:533 63:1876 64:2633 65:2076 66:2736 67:510
68:506 69:944 70:73 71:5 72:116 80:535
81:513 82:347 83:251 84:130 85:177 128:146
129:156 130:89 131:281 132:32 133:1 134:144
135:40 136:190 137:66 138:160 139:50 140:194
141:104 142:139 143:130 144:171 145:45 146:281
147:98 148:294 149:167 150:97 151:63 152:110
153:85 154:3 155:143 156:61 157:87 158:167
159:168 160:71 161:60 162:199 163:87 164:215
165:153 166:127 167:228 168:411 169:135 170:312
171:8 172:1 192:5658 193:3117 194:2315 195:1605
196:629 198:3905 199:3258 200:4050 201:57 202:5364
203:6120 204:3728 205:2007 206:2357 207:2710 208:2057
209:3204 210:1638 211:824 212:1180 213:1273 214:242
215:31 216:3670 217:1130 218:190 219:102 220:374
221:115 222:71
End of report
