Weekly Routing Table Report
Routing Table Analysis
cscora at apnic.net
Fri Jul 15 18:06:51 UTC 2005
This is an automated weekly mailing describing the state of the Internet
Routing Table as seen from APNIC's router in Japan.
Daily listings are sent to bgp-stats at lists.apnic.net
If you have any comments please contact Philip Smith <pfs at cisco.com>.
Routing Table Report 04:00 +10GMT Sat 16 Jul, 2005
Analysis Summary
----------------
BGP routing table entries examined: 166896
Prefixes after maximum aggregation: 96467
Unique aggregates announced to Internet: 81009
Total ASes present in the Internet Routing Table: 20080
Origin-only ASes present in the Internet Routing Table: 17496
Origin ASes announcing only one prefix: 8218
Transit ASes present in the Internet Routing Table: 2584
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: 15
Number of addresses announced to Internet: 1394583136
Equivalent to 83 /8s, 31 /16s and 166 /24s
Percentage of available address space announced: 37.6
Percentage of allocated address space announced: 56.7
Percentage of available address space allocated: 66.4
Total number of prefixes smaller than registry allocations: 79203
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 34754
Total APNIC prefixes after maximum aggregation: 16139
Prefixes being announced from the APNIC address blocks: 32622
Unique aggregates announced from the APNIC address blocks: 16618
APNIC Region origin ASes present in the Internet Routing Table: 2313
APNIC Region origin ASes announcing only one prefix: 673
APNIC Region transit ASes present in the Internet Routing Table: 356
Average APNIC Region AS path length visible: 4.4
Max APNIC Region AS path length visible: 17
Number of APNIC addresses announced to Internet: 190697344
Equivalent to 11 /8s, 93 /16s and 207 /24s
Percentage of available APNIC address space announced: 70.8
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: 89316
Total ARIN prefixes after maximum aggregation: 54483
Prefixes being announced from the ARIN address blocks: 69778
Unique aggregates announced from the ARIN address blocks: 25819
ARIN Region origin ASes present in the Internet Routing Table: 10085
ARIN Region origin ASes announcing only one prefix: 3711
ARIN Region transit ASes present in the Internet Routing Table: 939
Average ARIN Region AS path length visible: 4.3
Max ARIN Region AS path length visible: 20
Number of ARIN addresses announced to Internet: 252904960
Equivalent to 15 /8s, 19 /16s and 6 /24s
Percentage of available ARIN address space announced: 62.8
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: 32031
Total RIPE prefixes after maximum aggregation: 21901
Prefixes being announced from the RIPE address blocks: 29041
Unique aggregates announced from the RIPE address blocks: 19493
RIPE Region origin ASes present in the Internet Routing Table: 6859
RIPE Region origin ASes announcing only one prefix: 3609
RIPE Region transit ASes present in the Internet Routing Table: 1126
Average RIPE Region AS path length visible: 5.2
Max RIPE Region AS path length visible: 26
Number of RIPE addresses announced to Internet: 211826880
Equivalent to 12 /8s, 160 /16s and 56 /24s
Percentage of available RIPE address space announced: 63.1
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: 9130
Total LACNIC prefixes after maximum aggregation: 3170
Prefixes being announced from the LACNIC address blocks: 7483
Unique aggregates announced from the LACNIC address blocks: 4338
LACNIC Region origin ASes present in the Internet Routing Table: 624
LACNIC Region origin ASes announcing only one prefix: 188
LACNIC Region transit ASes present in the Internet Routing Table: 116
Average LACNIC Region AS path length visible: 5.2
Max LACNIC Region AS path length visible: 21
Number of LACNIC addresses announced to Internet: 20440864
Equivalent to 1 /8s, 55 /16s and 231 /24s
Percentage of available LACNIC address space announced: 30.5
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: 1641
Total AfriNIC prefixes after maximum aggregation: 774
Prefixes being announced from the AfriNIC address blocks: 1025
Unique aggregates announced from the AfriNIC address blocks: 789
AfriNIC Region origin ASes present in the Internet Routing Table: 131
AfriNIC Region origin ASes announcing only one prefix: 37
AfriNIC Region transit ASes present in the Internet Routing Table: 16
Average AfriNIC Region AS path length visible: 4.6
Max AfriNIC Region AS path length visible: 12
Number of AfriNIC addresses announced to Internet: 2327296
Equivalent to 0 /8s, 35 /16s and 131 /24s
Percentage of available AfriNIC address space announced: 6.9
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 927 5566 194 CHINANET-BACKBONE
9583 762 57 86 Sify Limited
1221 759 1454 534 Telstra Pty Ltd
4755 659 248 147 Videsh Sanchar Nigam Ltd. Aut
4766 591 3413 279 Korea Telecom (KIX)
7545 508 106 74 TPG Internet Pty Ltd
17676 437 6590 76 Softbank BB Corp.
9443 375 78 76 Primus Telecommunications
9929 367 223 49 China Netcom Corp.
2907 337 1789 314 SINET Japan
9498 336 83 61 BHARTI BT INTERNET LTD.
17557 327 23 154 Pakistan Telecom
7474 309 272 213 SingTel Optus Pty Ltd
4802 288 50 165 Wantree Development
4808 283 243 166 CNCGROUP IP network: China169
9837 279 80 183 Powertel Ltd
10036 278 59 244 C&M Communication Co. Ltd.
18302 276 109 156 SK Global co., Ltd
17974 270 65 14 PT TELEKOMUNIKASI INDONESIA
17488 264 15 18 Hathway IP Over Cable Interne
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
7018 1499 6417 973 AT&T WorldNet Services
174 1140 5808 1061 Cogent Communications
4323 1131 664 222 Time Warner Telecom
721 1096 21787 311 DLA Systems Automation Center
701 1014 8168 857 UUNET Technologies, Inc.
6197 939 522 433 BellSouth Network Solutions,
2386 896 529 661 AT&T Data Communications Serv
1239 885 2876 637 Sprint
18566 827 224 7 Covad Communications
20115 649 498 320 Charter Communications
209 626 3507 496 Qwest
3356 565 10779 434 Level 3 Communications, LLC
27364 554 44 18 Armstrong Cable Services
3602 544 123 104 Sprint Canada, Inc.
852 542 1094 388 Telus Advanced Communications
3561 537 2384 421 Savvis
7725 505 64 17 MediaOne
22773 502 1188 23 Cox Communications, Inc.
5668 493 114 25 CenturyTel Internet Holdings,
6198 466 396 224 BellSouth Network Solutions,
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 592 1999 483 UUNET - Commercial IP service
3320 303 3232 242 Deutsche Telekom AG
3301 300 1081 286 TeliaNet Sweden
8220 265 472 261 COLT Telecommunications
680 245 2041 241 DFN-IP service G-WiN
3246 230 469 223 Song Networks
8708 224 253 210 Romania Data Systems S.A.
1257 194 712 172 SWIPnet Swedish IP Network
5515 180 778 127 Sonera Solution Autonomous Sy
786 175 1794 175 The JANET IP Service
5400 173 286 146 BT Ignite European Backbone
6746 173 49 151 Dynamic Network Technologies,
3269 169 1520 72 TELECOM ITALIA
719 168 340 100 LANLINK autonomous system
8866 162 21 11 Bulgarian Telecommunication C
3300 153 184 86 AUCS Communications Services
6830 149 537 31 UPC Distribution Services
9121 148 271 34 TTnet Autonomous System
25186 142 145 99 France Telecom Transpac's Tra
3352 139 1272 35 Ibernet, Internet Access Netw
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
8151 379 599 159 UniNet S.A. de C.V.
16814 265 16 7 NSS, S.A.
11172 232 99 59 Servicios Alestra S.A de C.V
11664 210 20 22 Keytech SA
6147 190 110 21 Telefonica Del Peru
14117 152 9 5 Telefonica del Sur S.A.
7303 150 69 18 Telecom Argentina Stet-France
19632 142 14 5 Metropolis Intercom S.A.
22047 132 112 7 VTR PUNTO NET S.A.
11556 131 64 3 Cable-Wireless Panama
6505 130 90 87 Global One Communicaoes Ltda
6503 115 147 73 AVANTEL, S.A.
19169 115 7 22 Telconet
13999 111 52 9 Mega Cable S.A. de C.V.
18822 110 7 14 TELEFONICA MANQUEHUE
10481 101 40 7 Prima S.A.
23216 99 24 23 RAMtelecom Telecomunicaciones
5639 96 12 9 Telecommunications Services o
22927 96 73 25 TELEFONICA DE ARGENTINA
21826 95 13 20 INTERCABLE
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
3741 264 621 222 The Internet Solution
5536 120 15 17 Internet Egypt Network
2018 95 295 86 Tertiary Education Network
8452 92 28 6 TEDATA
2905 75 266 67 The Internetworking Company o
24835 57 34 6 RAYA Telecom - Egypt
6713 51 54 8 Itissalat Al-MAGHRIB
15475 49 84 4 Nile Online
20928 46 16 2 Noor Advanced Technologies AS
9129 43 3 3 UUNET Kenya
12455 38 6 3 Jambonet Autonomous system
5713 36 142 29 Telkom SA Ltd
15706 31 8 3 Sudatel Internet Exchange Aut
8524 25 1 4 AUCEGYPT Autonomous System
16637 22 10 19 Johnnic e-Ventures
23889 20 5 9 MAURITIUS TELECOM
10798 19 1 11 Standard Bank of South Africa
21491 18 1 1 UTL On-line is RF broadband I
12258 17 3 11 Vodacom Internet Company
15808 17 2 2 Communication Solutions Ltd i
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
4323 1131 909 Time Warner Telecom
18566 827 820 Covad Communications
721 1096 785 DLA Systems Automation Center
4134 927 733 CHINANET-BACKBONE
9583 762 676 Sify Limited
27364 554 536 Armstrong Cable Services
4755 659 512 Videsh Sanchar Nigam Ltd. Aut
6197 939 506 BellSouth Network Solutions,
7725 505 488 MediaOne
22773 502 479 Cox Communications, Inc.
5668 493 468 CenturyTel Internet Holdings,
3602 544 440 Sprint Canada, Inc.
7545 508 434 TPG Internet Pty Ltd
17676 437 361 Softbank BB Corp.
6467 381 347 E.Spire Communications, Inc.
20115 649 329 Charter Communications
9929 367 318 China Netcom Corp.
4766 591 312 Korea Telecom (KIX)
19262 431 312 Verizon Global Networks
9443 375 299 Primus Telecommunications
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
65050 PRIVATE 168.96.148.0/24 6140 ImpSat
65507 PRIVATE 200.0.64.0/24 27750 Cooperación Latino A
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
65004 PRIVATE 200.4.7.0/24 28477 Universidad Autonoma
65142 PRIVATE 200.32.76.0/24 6140 ImpSat
65142 PRIVATE 200.32.77.0/24 6140 ImpSat
64512 PRIVATE 200.61.48.0/20 11664 Keytech SA
64512 PRIVATE 200.61.58.0/23 11664 Keytech SA
64512 PRIVATE 200.80.148.0/23 11664 Keytech SA
65201 PRIVATE 201.30.243.0/24 4230 Embratel
65005 PRIVATE 203.200.197.0/24 4755 Videsh Sanchar Nigam
Advertised Unallocated Addresses
--------------------------------
Network Origin AS Description
50.160.0.0/13 1221 Telstra Pty Ltd
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
192.169.0.0/23 3970 RGnet, Inc.
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 /11:15 /12:75
/13:162 /14:313 /15:602 /16:8440 /17:2637 /18:4526
/19:10487 /20:11409 /21:9463 /22:12925 /23:13874 /24:90893
/25:361 /26:311 /27:182 /28:59 /29:27 /30:79
/31:0 /32:28
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
18566 811 827 Covad Communications
6197 765 939 BellSouth Network Solutions,
7018 708 1499 AT&T WorldNet Services
2386 610 896 AT&T Data Communications Serv
9583 579 762 Sify Limited
27364 545 554 Armstrong Cable Services
4323 536 1131 Time Warner Telecom
7725 475 505 MediaOne
4766 409 591 Korea Telecom (KIX)
5668 401 493 CenturyTel Internet Holdings,
1239 371 885 Sprint
702 365 592 UUNET - Commercial IP service
6198 341 466 BellSouth Network Solutions,
7011 324 375 Citizens Utilities
15270 296 321 PaeTec.net -a division of Pae
6517 291 314 Yipes Communications, Inc.
9929 282 367 China Netcom Corp.
20115 281 649 Charter Communications
11456 274 313 Carolina Online, Inc.
701 268 1014 UUNET Technologies, Inc.
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:6 8:23 9:1 12:1553 13:1 15:9
16:2 17:3 18:3 20:4 24:1178 30:2
32:69 33:3 38:137 40:54 44:3 47:2
52:4 55:2 56:3 57:23 58:151 59:51
60:64 61:779 62:625 63:1888 64:2782 65:2076
66:2905 67:623 68:552 69:1101 70:145 71:10
72:268 80:595 81:571 82:431 83:287 84:213
85:283 86:57 87:17 128:179 129:169 130:88
131:294 132:41 133:1 134:145 135:43 136:137
137:74 138:166 139:60 140:300 141:106 142:153
143:139 144:201 145:33 146:289 147:109 148:305
149:175 150:107 151:65 152:108 153:88 154:4
155:142 156:78 157:100 158:160 159:169 160:78
161:71 162:217 163:93 164:195 165:187 166:157
167:245 168:437 169:146 170:320 171:8 172:1
190:1 192:5704 193:3212 194:2428 195:1589 196:673
198:3900 199:3287 200:4049 201:205 202:5905 203:6395
204:3797 205:2010 206:2446 207:2808 208:2047 209:3291
210:1759 211:832 212:1254 213:1334 214:267 215:31
216:3494 217:1126 218:206 219:153 220:394 221:234
222:120
End of report
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