Routing Table Report 04:00 +10GMT Fri 29 Apr, 2005
Analysis Summary
----------------
BGP routing table entries examined: 160953
Prefixes after maximum aggregation: 93750
Unique aggregates announced to Internet: 77518
Total ASes present in the Internet Routing Table: 19522
Origin-only ASes present in the Internet Routing Table: 16986
Origin ASes announcing only one prefix: 7951
Transit ASes present in the Internet Routing Table: 2536
Transit-only ASes present in the Internet Routing Table: 66
Average AS path length visible in the Internet Routing Table: 4.5
Max AS path length visible: 25
Prefixes from unregistered ASNs in the Routing Table: 13
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 14
Number of addresses announced to Internet: 1402482008
Equivalent to 83 /8s, 152 /16s and 45 /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: 75415
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 32932
Total APNIC prefixes after maximum aggregation: 15554
Prefixes being announced from the APNIC address blocks: 30871
Unique aggregates announced from the APNIC address blocks: 15500
APNIC Region origin ASes present in the Internet Routing Table: 2253
APNIC Region origin ASes announcing only one prefix: 657
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: 15
Number of APNIC addresses announced to Internet: 182121856
Equivalent to 10 /8s, 218 /16s and 245 /24s
Percentage of available APNIC address space announced: 67.6
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: 87407
Total ARIN prefixes after maximum aggregation: 53313
Prefixes being announced from the ARIN address blocks: 68165
Unique aggregates announced from the ARIN address blocks: 25057
ARIN Region origin ASes present in the Internet Routing Table: 9902
ARIN Region origin ASes announcing only one prefix: 3602
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: 21
Number of ARIN addresses announced to Internet: 247254016
Equivalent to 14 /8s, 188 /16s and 204 /24s
Percentage of available ARIN address space announced: 70.2
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: 30615
Total RIPE prefixes after maximum aggregation: 21156
Prefixes being announced from the RIPE address blocks: 27631
Unique aggregates announced from the RIPE address blocks: 18426
RIPE Region origin ASes present in the Internet Routing Table: 6593
RIPE Region origin ASes announcing only one prefix: 3472
RIPE Region transit ASes present in the Internet Routing Table: 1100
Average RIPE Region AS path length visible: 5.1
Max RIPE Region AS path length visible: 25
Number of RIPE addresses announced to Internet: 202126272
Equivalent to 12 /8s, 12 /16s and 51 /24s
Percentage of available RIPE address space announced: 70.9
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: 8551
Total LACNIC prefixes after maximum aggregation: 3024
Prefixes being announced from the LACNIC address blocks: 6960
Unique aggregates announced from the LACNIC address blocks: 4077
LACNIC Region origin ASes present in the Internet Routing Table: 612
LACNIC Region origin ASes announcing only one prefix: 193
LACNIC Region transit ASes present in the Internet Routing Table: 110
Average LACNIC Region AS path length visible: 5.2
Max LACNIC Region AS path length visible: 21
Number of LACNIC addresses announced to Internet: 18463488
Equivalent to 1 /8s, 25 /16s and 187 /24s
Percentage of available LACNIC address space announced: 55.0
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: 1431
Total AfriNIC prefixes after maximum aggregation: 703
Prefixes being announced from the AfriNIC address blocks: 939
Unique aggregates announced from the AfriNIC address blocks: 745
AfriNIC Region origin ASes present in the Internet Routing Table: 99
AfriNIC Region origin ASes announcing only one prefix: 27
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: 13
Number of AfriNIC addresses announced to Internet: 2223616
Equivalent to 0 /8s, 33 /16s and 238 /24s
Percentage of available AfriNIC address space announced: 6.6
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 898 5035 184 CHINANET-BACKBONE
1221 772 1192 549 Telstra Pty Ltd
9583 727 53 71 Sify Limited
4766 585 3413 276 Korea Telecom (KIX)
4755 580 244 126 Videsh Sanchar Nigam Ltd. Aut
7545 492 86 71 TPG Internet Pty Ltd
17676 431 6509 73 Softbank BB Corp.
9443 370 77 76 Primus Telecommunications
9929 361 197 46 China Netcom Corp.
2907 345 1838 319 SINET Japan
17557 316 22 152 Pakistan Telecom
10036 313 28 284 C&M Communication Co. Ltd.
4808 307 250 168 CNCGROUP IP network: China169
7474 298 268 208 SingTel Optus Pty Ltd
9498 286 82 54 BHARTI BT INTERNET LTD.
4802 279 47 164 Wantree Development
2764 258 238 197 AAPT Limited
703 256 279 211 UUNET - Commercial IP service
17974 245 65 14 PT TELEKOMUNIKASI INDONESIA
9800 242 386 69 CHINA UNICOM
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
7018 1486 6499 959 AT&T WorldNet Services
174 1175 5607 1006 Cogent Communications
721 1118 21763 314 DLA Systems Automation Center
4323 1108 665 225 Time Warner Telecom
701 1006 8282 856 UUNET Technologies, Inc.
1239 910 2874 659 Sprint
6197 895 381 415 BellSouth Network Solutions,
2386 847 532 628 AT&T Data Communications Serv
18566 798 224 7 Covad Communications
209 653 3460 494 Qwest
20115 610 505 308 Charter Communications
3356 585 10836 439 Level 3 Communications, LLC
3561 542 2365 415 Savvis
27364 539 43 18 Armstrong Cable Services
852 530 1095 393 Telus Advanced Communications
3602 506 122 94 Sprint Canada, Inc.
5668 487 115 25 CenturyTel Internet Holdings,
22773 480 1188 21 Cox Communications, Inc.
6198 467 541 200 BellSouth Network Solutions,
7132 443 8782 380 SBC Internet Services
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 594 2003 486 UUNET - Commercial IP service
3320 303 2993 237 Deutsche Telekom AG
3301 297 1116 287 TeliaNet Sweden
8220 273 469 267 COLT Telecommunications
680 253 2041 238 DFN-IP service G-WiN
3246 233 491 228 Song Networks
8708 225 251 207 Romania Data Systems S.A.
1257 203 727 174 SWIPnet Swedish IP Network
5515 178 778 128 Sonera Solution Autonomous Sy
786 176 1794 176 The JANET IP Service
3269 167 1472 73 TELECOM ITALIA
6746 164 47 143 Dynamic Network Technologies,
719 159 340 101 LANLINK autonomous system
8866 158 21 12 Bulgarian Telecommunication C
3300 152 184 85 AUCS Communications Services
5400 144 284 128 BT Ignite European Backbone
25186 139 137 97 France Telecom Transpac's Tra
6830 137 513 27 UPC Distribution Services
2856 129 2305 116 BTnet UK Regional network
9051 128 8 34 INCONET Autonomous System
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
8151 374 598 148 UniNet S.A. de C.V.
16814 266 16 7 NSS, S.A.
11172 223 99 54 Servicios Alestra S.A de C.V
6147 197 102 20 Telefonica Del Peru
11664 155 19 22 Keytech SA
7303 147 68 21 Telecom Argentina Stet-France
14117 135 8 4 Telefonica del Sur S.A.
6505 130 90 87 Global One Communicaoes Ltda
22047 124 96 6 VTR PUNTO NET S.A.
11556 110 55 6 Cable-Wireless Panama
13999 109 52 9 Mega Cable S.A. de C.V.
18822 105 7 15 TELEFONICA MANQUEHUE
6503 103 146 73 AVANTEL, S.A.
10481 101 40 7 Prima S.A.
19169 97 6 15 Telconet
21826 89 12 18 INTERCABLE
23216 89 24 22 RAMtelecom Telecomunicaciones
11311 85 8 21 Sinectis S.A.
5639 84 12 9 Telecommunications Services o
22927 80 65 21 TELEFONICA DE ARGENTINA
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
3741 270 637 225 The Internet Solution
5536 119 15 17 Internet Egypt Network
2018 90 295 87 Tertiary Education Network
20928 90 16 2 Noor Advanced Technologies AS
2905 75 267 69 The Internetworking Company o
8452 64 20 5 TEDATA
24835 58 32 6 RAYA Telecom - Egypt
9129 43 3 3 UUNET Kenya
12455 41 6 3 Jambonet Autonomous system
5713 35 141 28 Telkom SA Ltd
6713 35 54 9 Itissalat Al-MAGHRIB
8524 25 1 4 AUCEGYPT Autonomous System
15475 24 84 4 Nile Online
16637 22 10 19 Johnnic e-Ventures
10798 19 1 11 Standard Bank of South Africa
7460 18 3 5 LIA Internet Access
2609 17 26 3 Tunisia BackBone AS
12258 17 3 11 Vodacom Internet Company
15808 16 1 1 Communication Solutions Ltd i
21280 16 2 3 Swift Global Kenya Ltd.Is an
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
0 0 65531 *
4323 1108 883 Time Warner Telecom
721 1118 804 DLA Systems Automation Center
18566 798 791 Covad Communications
4134 898 714 CHINANET-BACKBONE
9583 727 656 Sify Limited
27364 539 521 Armstrong Cable Services
6197 895 480 BellSouth Network Solutions,
5668 487 462 CenturyTel Internet Holdings,
22773 480 459 Cox Communications, Inc.
4755 580 454 Videsh Sanchar Nigam Ltd. Aut
7545 492 421 TPG Internet Pty Ltd
3602 506 412 Sprint Canada, Inc.
6467 432 397 E.Spire Communications, Inc.
17676 431 358 Softbank BB Corp.
6140 402 328 ImpSat
9929 361 315 China Netcom Corp.
4766 585 309 Korea Telecom (KIX)
20115 610 302 Charter Communications
9443 370 294 Primus Telecommunications
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
30999 UNALLOCATED 196.192.80.0/24 6774 BELGACOM
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
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
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 /12:68
/13:153 /14:308 /15:584 /16:8380 /17:2528 /18:4358
/19:10244 /20:11047 /21:8928 /22:12318 /23:13310 /24:87781
/25:282 /26:268 /27:140 /28:75 /29:38 /30:70
/31:0 /32:28
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
18566 782 798 Covad Communications
6197 734 895 BellSouth Network Solutions,
7018 671 1486 AT&T WorldNet Services
2386 601 847 AT&T Data Communications Serv
9583 543 727 Sify Limited
27364 528 539 Armstrong Cable Services
4323 518 1108 Time Warner Telecom
5668 405 487 CenturyTel Internet Holdings,
4766 402 585 Korea Telecom (KIX)
1239 383 910 Sprint
702 366 594 UUNET - Commercial IP service
6198 337 467 BellSouth Network Solutions,
10036 313 313 C&M Communication Co. Ltd.
6467 312 432 E.Spire Communications, Inc.
6517 297 320 Yipes Communications, Inc.
7011 296 346 Citizens Utilities
9929 282 361 China Netcom Corp.
11456 276 317 Carolina Online, Inc.
15270 258 278 PaeTec.net -a division of Pae
174 249 1175 Cogent Communications
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:4 8:12 12:1526 13:1 15:9 16:2
17:3 18:4 20:4 24:978 30:2 32:69
33:4 38:109 40:53 44:3 47:2 52:4
55:2 56:3 57:24 58:42 59:30 60:22
61:785 62:590 63:1874 64:2684 65:2076 66:2795
67:562 68:519 69:996 70:94 71:5 72:156
80:550 81:544 82:396 83:241 84:163 85:177
86:6 128:148 129:158 130:91 131:279 132:34
133:1 134:148 135:40 136:187 137:65 138:171
139:55 140:191 141:106 142:139 143:133 144:167
145:32 146:280 147:104 148:293 149:169 150:97
151:65 152:107 153:87 154:5 155:143 156:77
157:92 158:167 159:174 160:77 161:60 162:202
163:83 164:207 165:178 166:155 167:230 168:417
169:140 170:315 171:8 172:2 192:5705 193:3175
194:2344 195:1557 196:648 198:3941 199:3274 200:3864
201:116 202:5533 203:6118 204:3812 205:2008 206:2459
207:2752 208:2056 209:3274 210:1684 211:842 212:1191
213:1282 214:276 215:32 216:3535 217:1136 218:192
219:105 220:374 221:199 222:93
End of report
