Routing Table Report 04:00 +10GMT Thu 25 Aug, 2005
Analysis Summary
----------------
BGP routing table entries examined: 168712
Prefixes after maximum aggregation: 96988
Unique aggregates announced to Internet: 81845
Total ASes present in the Internet Routing Table: 20362
Origin-only ASes present in the Internet Routing Table: 17723
Origin ASes announcing only one prefix: 8386
Transit ASes present in the Internet Routing Table: 2639
Transit-only ASes present in the Internet Routing Table: 74
Average AS path length visible in the Internet Routing Table: 4.5
Max AS path length visible: 26
Prefixes from unregistered ASNs in the Routing Table: 18
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 12
Number of addresses announced to Internet: 1410710561
Equivalent to 84 /8s, 21 /16s and 188 /24s
Percentage of available address space announced: 38.1
Percentage of allocated address space announced: 57.3
Percentage of available address space allocated: 66.4
Total number of prefixes smaller than registry allocations: 80026
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 35183
Total APNIC prefixes after maximum aggregation: 15831
Prefixes being announced from the APNIC address blocks: 33026
Unique aggregates announced from the APNIC address blocks: 16593
APNIC Region origin ASes present in the Internet Routing Table: 2344
APNIC Region origin ASes announcing only one prefix: 696
APNIC Region transit ASes present in the Internet Routing Table: 351
Average APNIC Region AS path length visible: 4.5
Max APNIC Region AS path length visible: 18
Number of APNIC addresses announced to Internet: 195391104
Equivalent to 11 /8s, 165 /16s and 110 /24s
Percentage of available APNIC address space announced: 72.5
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: 90123
Total ARIN prefixes after maximum aggregation: 54952
Prefixes being announced from the ARIN address blocks: 70427
Unique aggregates announced from the ARIN address blocks: 26119
ARIN Region origin ASes present in the Internet Routing Table: 10167
ARIN Region origin ASes announcing only one prefix: 3743
ARIN Region transit ASes present in the Internet Routing Table: 953
Average ARIN Region AS path length visible: 4.3
Max ARIN Region AS path length visible: 20
Number of ARIN addresses announced to Internet: 260849953
Equivalent to 15 /8s, 140 /16s and 65 /24s
Percentage of available ARIN address space announced: 64.8
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: 32460
Total RIPE prefixes after maximum aggregation: 22245
Prefixes being announced from the RIPE address blocks: 29488
Unique aggregates announced from the RIPE address blocks: 19889
RIPE Region origin ASes present in the Internet Routing Table: 7017
RIPE Region origin ASes announcing only one prefix: 3711
RIPE Region transit ASes present in the Internet Routing Table: 1164
Average RIPE Region AS path length visible: 5.1
Max RIPE Region AS path length visible: 26
Number of RIPE addresses announced to Internet: 215290240
Equivalent to 12 /8s, 213 /16s and 17 /24s
Percentage of available RIPE address space announced: 64.2
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: 9263
Total LACNIC prefixes after maximum aggregation: 3168
Prefixes being announced from the LACNIC address blocks: 7623
Unique aggregates announced from the LACNIC address blocks: 4422
LACNIC Region origin ASes present in the Internet Routing Table: 632
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: 21743616
Equivalent to 1 /8s, 75 /16s and 200 /24s
Percentage of available LACNIC address space announced: 32.4
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: 1663
Total AfriNIC prefixes after maximum aggregation: 792
Prefixes being announced from the AfriNIC address blocks: 1000
Unique aggregates announced from the AfriNIC address blocks: 770
AfriNIC Region origin ASes present in the Internet Routing Table: 134
AfriNIC Region origin ASes announcing only one prefix: 40
AfriNIC Region transit ASes present in the Internet Routing Table: 17
Average AfriNIC Region AS path length visible: 4.5
Max AfriNIC Region AS path length visible: 12
Number of AfriNIC addresses announced to Internet: 2627840
Equivalent to 0 /8s, 40 /16s and 25 /24s
Percentage of available AfriNIC address space announced: 7.8
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 957 5524 194 CHINANET-BACKBONE
1221 757 1327 526 Telstra Pty Ltd
9583 751 77 14 Sify Limited
4755 704 259 65 Videsh Sanchar Nigam Ltd. Aut
4766 600 3926 284 Korea Telecom (KIX)
7545 518 108 74 TPG Internet Pty Ltd
17676 465 6739 99 Softbank BB Corp.
9443 384 82 77 Primus Telecommunications
9498 339 83 59 BHARTI BT INTERNET LTD.
9929 338 224 46 China Netcom Corp.
2907 336 1788 313 SINET Japan
17557 328 23 155 Pakistan Telecom
7474 315 257 218 SingTel Optus Pty Ltd
18302 301 109 157 SK Global co., Ltd
17488 300 18 18 Hathway IP Over Cable Interne
4802 296 53 157 Wantree Development
9837 277 80 179 Powertel Ltd
17974 264 65 14 PT TELEKOMUNIKASI INDONESIA
703 257 262 207 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 1518 6377 986 AT&T WorldNet Services
4323 1153 704 221 Time Warner Telecom
174 1126 5837 1029 Cogent Communications
721 1093 21907 315 DLA Systems Automation Center
701 1003 8154 856 UUNET Technologies, Inc.
6197 945 502 450 BellSouth Network Solutions,
2386 899 528 663 AT&T Data Communications Serv
1239 865 2848 627 Sprint
18566 834 224 7 Covad Communications
20115 643 503 326 Charter Communications
209 628 3470 490 Qwest
3356 577 10662 447 Level 3 Communications, LLC
27364 554 44 18 Armstrong Cable Services
3602 547 125 105 Sprint Canada, Inc.
3561 533 2416 421 Savvis
22773 523 1352 27 Cox Communications, Inc.
5668 501 115 23 CenturyTel Internet Holdings,
6198 472 417 227 BellSouth Network Solutions,
7132 455 4948 389 SBC Internet Services
19262 449 1362 120 Verizon Global Networks
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 593 1999 484 UUNET - Commercial IP service
3301 299 1081 285 TeliaNet Sweden
3320 290 3232 239 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 227 261 213 Romania Data Systems S.A.
1257 198 713 176 SWIPnet Swedish IP Network
5515 181 778 127 Sonera Solution Autonomous Sy
6746 181 49 157 Dynamic Network Technologies,
786 174 1794 174 The JANET IP Service
3269 171 1528 68 TELECOM ITALIA
9121 171 281 45 TTnet Autonomous System
5400 166 289 140 BT Ignite European Backbone
8866 166 20 7 Bulgarian Telecommunication C
6830 157 669 33 UPC Distribution Services
3300 156 184 90 AUCS Communications Services
25186 144 145 101 France Telecom Transpac's Tra
8551 139 120 20 Bezeq International
1273 137 174 96 Cable & Wireless Deutschland
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
8151 396 648 167 UniNet S.A. de C.V.
16814 265 16 7 NSS, S.A.
11172 242 99 57 Servicios Alestra S.A de C.V
6147 194 110 21 Telefonica Del Peru
11664 191 20 23 Keytech SA
14117 152 9 5 Telefonica del Sur S.A.
22047 145 128 7 VTR PUNTO NET S.A.
7303 143 68 15 Telecom Argentina Stet-France
19632 143 14 5 Metropolis Intercom S.A.
11556 131 64 3 Cable-Wireless Panama
6505 130 90 87 Global One Communicaoes Ltda
10481 120 48 8 Prima S.A.
19169 120 8 26 Telconet
6503 114 148 75 AVANTEL, S.A.
18822 110 7 14 TELEFONICA MANQUEHUE
13999 106 52 9 Mega Cable S.A. de C.V.
21826 103 13 15 INTERCABLE
5639 101 12 9 Telecommunications Services o
11311 97 8 14 Sinectis S.A.
23216 96 24 20 RAMtelecom Telecomunicaciones
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
3741 264 685 222 The Internet Solution
5536 122 8 15 Internet Egypt Network
8452 101 32 7 TEDATA
2018 96 295 87 Tertiary Education Network
2905 76 266 68 The Internetworking Company o
15475 67 84 4 Nile Online
24835 58 34 7 RAYA Telecom - Egypt
20928 57 16 2 Noor Advanced Technologies AS
6713 51 54 8 Itissalat Al-MAGHRIB
5713 43 149 33 Telkom SA Ltd
9129 31 3 3 UUNET Kenya
15706 31 8 3 Sudatel Internet Exchange Aut
12455 30 5 6 Jambonet Autonomous system
8524 23 1 3 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
15804 17 2 1 AS of The Way Out Internet So
15808 17 2 2 Communication Solutions Ltd i
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
4323 1153 932 Time Warner Telecom
18566 834 827 Covad Communications
721 1093 778 DLA Systems Automation Center
4134 957 763 CHINANET-BACKBONE
9583 751 737 Sify Limited
4755 704 639 Videsh Sanchar Nigam Ltd. Aut
27364 554 536 Armstrong Cable Services
22773 523 496 Cox Communications, Inc.
6197 945 495 BellSouth Network Solutions,
5668 501 478 CenturyTel Internet Holdings,
7545 518 444 TPG Internet Pty Ltd
3602 547 442 Sprint Canada, Inc.
17676 465 366 Softbank BB Corp.
6467 435 362 E.Spire Communications, Inc.
19262 449 329 Verizon Global Networks
20115 643 317 Charter Communications
4766 600 316 Korea Telecom (KIX)
11492 320 313 Cable One
9443 384 307 Primus Telecommunications
6140 417 294 ImpSat
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
36666 UNALLOCATED 74.63.0.0/20 23028 SAUNET
36666 UNALLOCATED 75.127.0.0/20 23028 SAUNET
36666 UNALLOCATED 76.191.0.0/20 23028 SAUNET
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
64943 PRIVATE 202.41.14.0/24 24110 Security Mail Pty Lt
64942 PRIVATE 202.41.15.0/24 24110 Security Mail Pty Lt
24413 UNALLOCATED 202.46.32.0/19 17623 China Netcom Corp.
65005 PRIVATE 203.200.197.0/24 4755 Videsh Sanchar Nigam
63946 RESERVED 204.222.174.0/23 268 Uniformed Services U
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
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 /11:17 /12:76
/13:170 /14:320 /15:607 /16:8500 /17:2695 /18:4586
/19:10652 /20:11642 /21:9704 /22:13110 /23:14018 /24:91510
/25:348 /26:338 /27:198 /28:50 /29:27 /30:80
/31:1 /32:35
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
18566 818 834 Covad Communications
6197 768 945 BellSouth Network Solutions,
7018 723 1518 AT&T WorldNet Services
2386 607 899 AT&T Data Communications Serv
9583 572 751 Sify Limited
4323 552 1153 Time Warner Telecom
27364 545 554 Armstrong Cable Services
4766 417 600 Korea Telecom (KIX)
5668 405 501 CenturyTel Internet Holdings,
702 366 593 UUNET - Commercial IP service
19916 363 369 OLM LLC
1239 359 865 Sprint
6198 345 472 BellSouth Network Solutions,
7011 344 399 Citizens Utilities
11492 312 320 Cable One
6517 301 324 Yipes Communications, Inc.
15270 300 324 PaeTec.net -a division of Pae
6467 289 435 E.Spire Communications, Inc.
18302 286 301 SK Global co., Ltd
701 279 1003 UUNET Technologies, Inc.
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:7 8:22 11:1 12:1576 13:1 15:9
16:2 17:3 18:3 20:5 24:960 30:3
32:61 33:1 38:143 40:56 44:4 47:2
52:4 55:2 56:3 57:23 58:154 59:63
60:111 61:722 62:710 63:1890 64:2835 65:2076
66:2898 67:597 68:580 69:1148 70:173 71:12
72:342 80:591 81:541 82:459 83:297 84:226
85:281 86:82 87:27 128:154 129:167 130:90
131:299 132:36 133:1 134:143 135:42 136:150
137:65 138:163 139:61 140:399 141:105 142:145
143:137 144:192 145:33 146:288 147:111 148:299
149:180 150:107 151:62 152:108 153:89 154:5
155:143 156:80 157:100 158:167 159:167 160:82
161:74 162:220 163:111 164:188 165:195 166:154
167:246 168:438 169:142 170:317 171:8 190:1
192:5744 193:3260 194:2399 195:1580 196:639 198:3878
199:3296 200:4126 201:241 202:6071 203:6374 204:3778
205:2027 206:2464 207:2829 208:2039 209:3345 210:1662
211:785 212:1221 213:1323 214:295 215:35 216:3630
217:1112 218:217 219:165 220:439 221:243 222:123
End of report