Routing Table Report 04:00 +10GMT Tue 29 Mar, 2005
Analysis Summary
----------------
BGP routing table entries examined: 158701
Prefixes after maximum aggregation: 92595
Unique aggregates announced to Internet: 76365
Total ASes present in the Internet Routing Table: 19245
Origin-only ASes present in the Internet Routing Table: 16742
Origin ASes announcing only one prefix: 7799
Transit ASes present in the Internet Routing Table: 2503
Transit-only ASes present in the Internet Routing Table: 70
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: 25
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 13
Number of addresses announced to Internet: 1390098200
Equivalent to 82 /8s, 219 /16s and 55 /24s
Percentage of available address space announced: 37.5
Percentage of allocated address space announced: 59.3
Percentage of available address space allocated: 63.2
Total number of prefixes smaller than registry allocations: 74045
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 32124
Total APNIC prefixes after maximum aggregation: 15284
Prefixes being announced from the APNIC address blocks: 30039
Unique aggregates announced from the APNIC address blocks: 15316
APNIC Region origin ASes present in the Internet Routing Table: 2230
APNIC Region origin ASes announcing only one prefix: 650
APNIC Region transit ASes present in the Internet Routing Table: 336
Average APNIC Region AS path length visible: 4.4
Max APNIC Region AS path length visible: 16
Number of APNIC addresses announced to Internet: 179654272
Equivalent to 10 /8s, 181 /16s and 78 /24s
Percentage of available APNIC address space announced: 66.7
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: 86347
Total ARIN prefixes after maximum aggregation: 52819
Prefixes being announced from the ARIN address blocks: 67362
Unique aggregates announced from the ARIN address blocks: 24785
ARIN Region origin ASes present in the Internet Routing Table: 9785
ARIN Region origin ASes announcing only one prefix: 3542
ARIN Region transit ASes present in the Internet Routing Table: 926
Average ARIN Region AS path length visible: 4.3
Max ARIN Region AS path length visible: 21
Number of ARIN addresses announced to Internet: 243284480
Equivalent to 14 /8s, 128 /16s and 58 /24s
Percentage of available ARIN address space announced: 72.5
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: 30299
Total RIPE prefixes after maximum aggregation: 20772
Prefixes being announced from the RIPE address blocks: 27313
Unique aggregates announced from the RIPE address blocks: 18033
RIPE Region origin ASes present in the Internet Routing Table: 6459
RIPE Region origin ASes announcing only one prefix: 3394
RIPE Region transit ASes present in the Internet Routing Table: 1086
Average RIPE Region AS path length visible: 5.1
Max RIPE Region AS path length visible: 23
Number of RIPE addresses announced to Internet: 196479172
Equivalent to 11 /8s, 182 /16s and 8 /24s
Percentage of available RIPE address space announced: 68.9
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: 8508
Total LACNIC prefixes after maximum aggregation: 3022
Prefixes being announced from the LACNIC address blocks: 6933
Unique aggregates announced from the LACNIC address blocks: 3995
LACNIC Region origin ASes present in the Internet Routing Table: 609
LACNIC Region origin ASes announcing only one prefix: 190
LACNIC Region transit ASes present in the Internet Routing Table: 111
Average LACNIC Region AS path length visible: 5.1
Max LACNIC Region AS path length visible: 19
Number of LACNIC addresses announced to Internet: 17839104
Equivalent to 1 /8s, 16 /16s and 52 /24s
Percentage of available LACNIC address space announced: 53.2
LACNIC AS Blocks 26592-26623, 27648-28671
LACNIC Address Blocks 200/7
Emerging AfriNIC Region Analysis Summary
----------------------------------------
Prefixes being announced by AfriNIC Region ASes: 1393
Total AfriNIC prefixes after maximum aggregation: 698
Prefixes being announced from the AfriNIC address blocks: 895
Unique aggregates announced from the AfriNIC address blocks: 719
AfriNIC Region origin ASes present in the Internet Routing Table: 97
AfriNIC Region origin ASes announcing only one prefix: 23
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: 2189824
Equivalent to 0 /8s, 33 /16s and 106 /24s
Percentage of available AfriNIC address space announced: 13.1
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 894 4761 178 CHINANET-BACKBONE
1221 787 1191 559 Telstra Pty Ltd
9583 638 51 34 Sify Limited
4766 584 3415 275 Korea Telecom (KIX)
4755 511 243 112 Videsh Sanchar Nigam Ltd. Aut
7545 486 86 71 TPG Internet Pty Ltd
17676 426 6444 73 Softbank BB Corp.
9443 371 77 77 Primus Telecommunications
9929 358 175 45 China Netcom Corp.
2907 345 1823 319 SINET Japan
17557 337 24 155 Pakistan Telecom
10036 306 28 279 C&M Communication Co. Ltd.
4808 300 247 161 CNCGROUP IP network: China169
7474 291 268 211 SingTel Optus Pty Ltd
4802 283 47 167 Wantree Development
9498 260 81 52 BHARTI BT INTERNET LTD.
2764 255 238 203 AAPT Limited
703 248 279 207 UUNET - Commercial IP service
9800 235 386 69 CHINA UNICOM
17974 233 63 12 PT TELEKOMUNIKASI INDONESIA
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
7018 1476 6562 965 AT&T WorldNet Services
721 1117 21763 314 DLA Systems Automation Center
4323 1086 663 224 Time Warner Telecom
701 1019 8283 868 UUNET Technologies, Inc.
174 927 5570 785 Cogent Communications
1239 917 2868 663 Sprint
6197 881 383 412 BellSouth Network Solutions,
2386 834 500 616 AT&T Data Communications Serv
18566 780 208 6 Covad Communications
209 635 3476 500 Qwest
20115 594 492 310 Charter Communications
3356 583 10852 431 Level 3 Communications, LLC
852 540 1095 399 Telus Advanced Communications
3561 539 2370 415 Savvis
3602 506 121 93 Sprint Canada, Inc.
6478 498 833 115 AT&T Worldnet Services
22773 475 1188 21 Cox Communications, Inc.
5668 474 115 27 CenturyTel Internet Holdings,
6198 470 567 191 BellSouth Network Solutions,
27364 465 43 18 Armstrong Cable Services
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 603 2004 493 UUNET - Commercial IP service
3320 296 2992 231 Deutsche Telekom AG
3301 289 1116 279 TeliaNet Sweden
8220 276 466 270 COLT Telecommunications
680 254 2041 239 DFN-IP service G-WiN
3246 231 475 225 Song Networks
8708 225 251 204 Romania Data Systems S.A.
13083 218 51 8 Mannesmann Datenverarbeitung
9121 209 240 47 TTnet Autonomous System
1257 201 712 177 SWIPnet Swedish IP Network
5515 178 778 128 Sonera Solution Autonomous Sy
786 176 1794 176 The JANET IP Service
3269 166 1456 72 TELECOM ITALIA
6746 162 47 142 Dynamic Network Technologies,
719 158 322 99 LANLINK autonomous system
8866 155 20 7 Bulgarian Telecommunication C
3300 152 184 85 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
8151 337 488 140 UniNet S.A. de C.V.
16814 233 14 6 NSS, S.A.
11172 214 99 52 Servicios Alestra S.A de C.V
6147 205 102 20 Telefonica Del Peru
19632 191 14 7 Metropolis Intercom S.A.
11664 149 19 23 Keytech SA
7303 147 67 31 Telecom Argentina Stet-France
6505 132 90 88 Global One Communicaoes Ltda
14117 119 8 4 Telefonica del Sur S.A.
22047 116 96 6 VTR PUNTO NET S.A.
6503 103 145 73 AVANTEL, S.A.
18822 102 6 14 TELEFONICA MANQUEHUE
13999 100 52 9 Mega Cable S.A. de C.V.
11556 98 49 4 Cable-Wireless Panama
19169 93 6 16 Telconet
23216 88 24 24 RAMtelecom Telecomunicaciones
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.
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
20928 91 16 2 Noor Advanced Technologies AS
2018 90 295 87 Tertiary Education Network
2905 74 266 68 The Internetworking Company o
24835 58 34 6 RAYA Telecom - Egypt
8452 55 20 5 TEDATA
12455 41 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
7460 18 3 5 LIA Internet Access
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
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
0 0 65531 *
4323 1086 862 Time Warner Telecom
721 1117 803 DLA Systems Automation Center
18566 780 774 Covad Communications
4134 894 716 CHINANET-BACKBONE
9583 638 604 Sify Limited
6197 881 469 BellSouth Network Solutions,
22773 475 454 Cox Communications, Inc.
5668 474 447 CenturyTel Internet Holdings,
27364 465 447 Armstrong Cable Services
7545 486 415 TPG Internet Pty Ltd
3602 506 413 Sprint Canada, Inc.
4755 511 399 Videsh Sanchar Nigam Ltd. Aut
6467 418 384 E.Spire Communications, Inc.
6478 498 383 AT&T Worldnet Services
17676 426 353 Softbank BB Corp.
6140 384 313 ImpSat
9929 358 313 China Netcom Corp.
4766 584 309 Korea Telecom (KIX)
9443 371 294 Primus Telecommunications
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
64500 RESERVED 85.114.96.0/21 1680 NetVision Ltd.
65503 PRIVATE 193.125.183.0/24 3217 SIMBIRSK
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
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
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 /12:64
/13:151 /14:305 /15:576 /16:8328 /17:2493 /18:4269
/19:10136 /20:10859 /21:8725 /22:12122 /23:13206 /24:86555
/25:264 /26:256 /27:128 /28:60 /29:26 /30:91
/31:0 /32:43
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
18566 765 780 Covad Communications
6197 722 881 BellSouth Network Solutions,
7018 650 1476 AT&T WorldNet Services
2386 587 834 AT&T Data Communications Serv
4323 506 1086 Time Warner Telecom
9583 460 638 Sify Limited
27364 450 465 Armstrong Cable Services
4766 400 584 Korea Telecom (KIX)
5668 400 474 CenturyTel Internet Holdings,
1239 381 917 Sprint
702 366 603 UUNET - Commercial IP service
6198 337 470 BellSouth Network Solutions,
6467 310 418 E.Spire Communications, Inc.
10036 306 306 C&M Communication Co. Ltd.
6517 289 311 Yipes Communications, Inc.
9929 282 358 China Netcom Corp.
7011 280 329 Citizens Utilities
11456 263 310 Carolina Online, Inc.
15270 249 268 PaeTec.net -a division of Pae
13609 247 292 Choice One Communications Inc
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:4 8:12 12:1508 13:1 15:9 16:2
17:3 18:4 20:4 24:741 32:64 33:4
38:102 40:55 44:3 47:2 52:3 55:2
56:3 57:23 58:5 59:11 60:25 61:736
62:541 63:1877 64:2635 65:2081 66:2734 67:510
68:506 69:950 70:77 71:5 72:122 80:538
81:507 82:386 83:253 84:131 85:199 128:137
129:156 130:90 131:280 132:34 133:1 134:144
135:40 136:190 137:66 138:158 139:50 140:193
141:105 142:139 143:130 144:171 145:45 146:281
147:101 148:293 149:167 150:97 151:63 152:108
153:86 154:3 155:143 156:67 157:87 158:167
159:168 160:72 161:60 162:200 163:84 164:214
165:160 166:127 167:230 168:418 169:135 170:312
171:8 172:1 192:5654 193:3106 194:2318 195:1615
196:621 198:3916 199:3265 200:4064 201:60 202:5364
203:6135 204:3752 205:2051 206:2363 207:2713 208:2081
209:3226 210:1646 211:826 212:1177 213:1280 214:241
215:31 216:3687 217:1142 218:190 219:101 220:371
221:127 222:73
End of report