Routing Table Report 04:00 +10GMT Thu 28 Apr, 2005
Analysis Summary
----------------
BGP routing table entries examined: 160882
Prefixes after maximum aggregation: 93517
Unique aggregates announced to Internet: 77538
Total ASes present in the Internet Routing Table: 19513
Origin-only ASes present in the Internet Routing Table: 16972
Origin ASes announcing only one prefix: 7948
Transit ASes present in the Internet Routing Table: 2541
Transit-only ASes present in the Internet Routing Table: 67
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: 12
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 14
Number of addresses announced to Internet: 1385620288
Equivalent to 82 /8s, 150 /16s and 227 /24s
Percentage of available address space announced: 37.4
Percentage of allocated address space announced: 58.7
Percentage of available address space allocated: 63.7
Total number of prefixes smaller than registry allocations: 75240
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 32897
Total APNIC prefixes after maximum aggregation: 15481
Prefixes being announced from the APNIC address blocks: 30830
Unique aggregates announced from the APNIC address blocks: 15565
APNIC Region origin ASes present in the Internet Routing Table: 2252
APNIC Region origin ASes announcing only one prefix: 659
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: 15
Number of APNIC addresses announced to Internet: 182071936
Equivalent to 10 /8s, 218 /16s and 50 /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: 87304
Total ARIN prefixes after maximum aggregation: 53180
Prefixes being announced from the ARIN address blocks: 68047
Unique aggregates announced from the ARIN address blocks: 25013
ARIN Region origin ASes present in the Internet Routing Table: 9894
ARIN Region origin ASes announcing only one prefix: 3592
ARIN Region transit ASes present in the Internet Routing Table: 936
Average ARIN Region AS path length visible: 4.3
Max ARIN Region AS path length visible: 21
Number of ARIN addresses announced to Internet: 247206912
Equivalent to 14 /8s, 188 /16s and 20 /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: 30573
Total RIPE prefixes after maximum aggregation: 21134
Prefixes being announced from the RIPE address blocks: 27604
Unique aggregates announced from the RIPE address blocks: 18395
RIPE Region origin ASes present in the Internet Routing Table: 6592
RIPE Region origin ASes announcing only one prefix: 3477
RIPE Region transit ASes present in the Internet Routing Table: 1106
Average RIPE Region AS path length visible: 5.1
Max RIPE Region AS path length visible: 25
Number of RIPE addresses announced to Internet: 202115008
Equivalent to 12 /8s, 12 /16s and 7 /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: 8643
Total LACNIC prefixes after maximum aggregation: 3012
Prefixes being announced from the LACNIC address blocks: 7075
Unique aggregates announced from the LACNIC address blocks: 4185
LACNIC Region origin ASes present in the Internet Routing Table: 609
LACNIC Region origin ASes announcing only one prefix: 193
LACNIC Region transit ASes present in the Internet Routing Table: 109
Average LACNIC Region AS path length visible: 5.2
Max LACNIC Region AS path length visible: 21
Number of LACNIC addresses announced to Internet: 18460672
Equivalent to 1 /8s, 25 /16s and 176 /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: 1449
Total AfriNIC prefixes after maximum aggregation: 710
Prefixes being announced from the AfriNIC address blocks: 940
Unique aggregates announced from the AfriNIC address blocks: 745
AfriNIC Region origin ASes present in the Internet Routing Table: 101
AfriNIC Region origin ASes announcing only one prefix: 27
AfriNIC Region transit ASes present in the Internet Routing Table: 13
Average AfriNIC Region AS path length visible: 4.6
Max AfriNIC Region AS path length visible: 13
Number of AfriNIC addresses announced to Internet: 2211840
Equivalent to 0 /8s, 33 /16s and 192 /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 897 5027 183 CHINANET-BACKBONE
1221 772 1192 549 Telstra Pty Ltd
9583 726 53 71 Sify Limited
4766 584 3413 275 Korea Telecom (KIX)
4755 537 243 109 Videsh Sanchar Nigam Ltd. Aut
7545 487 86 70 TPG Internet Pty Ltd
17676 431 6509 73 Softbank BB Corp.
9443 369 77 75 Primus Telecommunications
9929 358 189 45 China Netcom Corp.
2907 345 1838 319 SINET Japan
17557 319 23 153 Pakistan Telecom
10036 313 28 284 C&M Communication Co. Ltd.
4808 309 251 169 CNCGROUP IP network: China169
7474 299 268 209 SingTel Optus Pty Ltd
9498 285 82 53 BHARTI BT INTERNET LTD.
4802 279 47 164 Wantree Development
2764 259 238 197 AAPT Limited
703 257 279 211 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 6515 960 AT&T WorldNet Services
174 1136 5603 968 Cogent Communications
721 1116 21731 313 DLA Systems Automation Center
4323 1107 665 225 Time Warner Telecom
701 1000 8282 853 UUNET Technologies, Inc.
1239 908 2842 657 Sprint
6197 895 381 415 BellSouth Network Solutions,
2386 843 532 624 AT&T Data Communications Serv
18566 793 224 7 Covad Communications
209 654 3460 495 Qwest
20115 610 505 308 Charter Communications
3356 583 10836 437 Level 3 Communications, LLC
3561 542 2361 415 Savvis
27364 539 43 18 Armstrong Cable Services
852 530 1095 393 Telus Advanced Communications
3602 506 122 94 Sprint Canada, Inc.
5668 486 115 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
702 593 2002 485 UUNET - Commercial IP service
3320 303 2993 237 Deutsche Telekom AG
3301 296 1116 286 TeliaNet Sweden
8220 272 469 266 COLT Telecommunications
680 253 2041 238 DFN-IP service G-WiN
3246 233 491 228 Song Networks
8708 226 251 208 Romania Data Systems S.A.
1257 199 727 175 SWIPnet Swedish IP Network
5515 178 778 128 Sonera Solution Autonomous Sy
786 176 1794 176 The JANET IP Service
3269 168 1472 73 TELECOM ITALIA
6746 164 47 143 Dynamic Network Technologies,
8866 162 21 12 Bulgarian Telecommunication C
719 159 340 101 LANLINK autonomous system
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 128 2305 115 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 372 598 146 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
19632 190 14 7 Metropolis Intercom S.A.
11664 155 19 22 Keytech SA
7303 144 68 19 Telecom Argentina Stet-France
14117 135 8 4 Telefonica del Sur S.A.
6505 130 90 87 Global One Communicaoes Ltda
22047 123 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 104 146 74 AVANTEL, S.A.
10481 101 40 7 Prima S.A.
19169 97 6 15 Telconet
23216 89 24 22 RAMtelecom Telecomunicaciones
21826 88 12 21 INTERCABLE
11311 85 8 21 Sinectis S.A.
5639 84 12 9 Telecommunications Services o
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
3741 269 635 225 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 61 34 6 RAYA Telecom - Egypt
9129 44 3 3 UUNET Kenya
12455 43 7 5 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 25 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
21280 17 2 3 Swift Global Kenya Ltd.Is an
15808 16 1 1 Communication Solutions Ltd i
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
0 0 65531 *
4323 1107 882 Time Warner Telecom
721 1116 803 DLA Systems Automation Center
18566 793 786 Covad Communications
4134 897 714 CHINANET-BACKBONE
9583 726 655 Sify Limited
27364 539 521 Armstrong Cable Services
6197 895 480 BellSouth Network Solutions,
5668 486 461 CenturyTel Internet Holdings,
22773 480 459 Cox Communications, Inc.
4755 537 428 Videsh Sanchar Nigam Ltd. Aut
7545 487 417 TPG Internet Pty Ltd
3602 506 412 Sprint Canada, Inc.
6467 433 398 E.Spire Communications, Inc.
17676 431 358 Softbank BB Corp.
6140 400 328 ImpSat
9929 358 313 China Netcom Corp.
4766 584 309 Korea Telecom (KIX)
20115 610 302 Charter Communications
9443 369 294 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
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 /8:18 /9:3 /10:8 /11:15 /12:68
/13:153 /14:308 /15:583 /16:8383 /17:2528 /18:4353
/19:10241 /20:11042 /21:8915 /22:12252 /23:13276 /24:87830
/25:289 /26:264 /27:141 /28:77 /29:38 /30:68
/31:0 /32:29
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
18566 777 793 Covad Communications
6197 734 895 BellSouth Network Solutions,
7018 669 1486 AT&T WorldNet Services
2386 597 843 AT&T Data Communications Serv
9583 542 726 Sify Limited
27364 528 539 Armstrong Cable Services
4323 517 1107 Time Warner Telecom
5668 404 486 CenturyTel Internet Holdings,
4766 401 584 Korea Telecom (KIX)
1239 383 908 Sprint
702 365 593 UUNET - Commercial IP service
6198 337 467 BellSouth Network Solutions,
6467 314 433 E.Spire Communications, Inc.
10036 313 313 C&M Communication Co. Ltd.
6517 295 318 Yipes Communications, Inc.
7011 295 345 Citizens Utilities
9929 282 358 China Netcom Corp.
11456 275 316 Carolina Online, Inc.
15270 258 278 PaeTec.net -a division of Pae
3320 248 303 Deutsche Telekom AG
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:4 8:12 12:1523 13:1 15:9 16:2
17:3 18:4 20:4 24:940 30:2 32:69
33:4 38:109 40:53 44:3 47:2 52:4
55:2 56:3 57:24 58:42 59:23 60:21
61:755 62:589 63:1857 64:2681 65:2078 66:2784
67:558 68:518 69:992 70:93 71:5 72:149
80:552 81:538 82:396 83:242 84:163 85:175
86:2 128:148 129:158 130:89 131:281 132:36
133:1 134:145 135:40 136:187 137:65 138:171
139:55 140:191 141:106 142:139 143:133 144:167
145:32 146:280 147:104 148:296 149:169 150:97
151:65 152:107 153:87 154:5 155:143 156:77
157:92 158:167 159:174 160:75 161:60 162:202
163:84 164:207 165:177 166:154 167:231 168:418
169:139 170:315 171:8 172:2 192:5703 193:3177
194:2337 195:1556 196:651 198:3932 199:3277 200:4027
201:116 202:5518 203:6150 204:3798 205:2022 206:2455
207:2748 208:2064 209:3277 210:1708 211:838 212:1189
213:1281 214:276 215:32 216:3544 217:1133 218:192
219:105 220:365 221:198 222:92
End of report