Weekly Routing Table Report
Routing Table Analysis
cscora at apnic.net
Fri Apr 29 18:07:16 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 30 Apr, 2005
Analysis Summary
----------------
BGP routing table entries examined: 160965
Prefixes after maximum aggregation: 93728
Unique aggregates announced to Internet: 77542
Total ASes present in the Internet Routing Table: 19534
Origin-only ASes present in the Internet Routing Table: 16995
Origin ASes announcing only one prefix: 7966
Transit ASes present in the Internet Routing Table: 2539
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: 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: 1402418240
Equivalent to 83 /8s, 151 /16s and 52 /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: 75387
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 32925
Total APNIC prefixes after maximum aggregation: 15505
Prefixes being announced from the APNIC address blocks: 30870
Unique aggregates announced from the APNIC address blocks: 15608
APNIC Region origin ASes present in the Internet Routing Table: 2252
APNIC Region origin ASes announcing only one prefix: 660
APNIC Region transit ASes present in the Internet Routing Table: 342
Average APNIC Region AS path length visible: 4.4
Max APNIC Region AS path length visible: 15
Number of APNIC addresses announced to Internet: 181904768
Equivalent to 10 /8s, 215 /16s and 165 /24s
Percentage of available APNIC address space announced: 67.5
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: 87447
Total ARIN prefixes after maximum aggregation: 53329
Prefixes being announced from the ARIN address blocks: 68203
Unique aggregates announced from the ARIN address blocks: 25071
ARIN Region origin ASes present in the Internet Routing Table: 9901
ARIN Region origin ASes announcing only one prefix: 3600
ARIN Region transit ASes present in the Internet Routing Table: 934
Average ARIN Region AS path length visible: 4.3
Max ARIN Region AS path length visible: 21
Number of ARIN addresses announced to Internet: 247404544
Equivalent to 14 /8s, 191 /16s and 24 /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: 30604
Total RIPE prefixes after maximum aggregation: 21151
Prefixes being announced from the RIPE address blocks: 27631
Unique aggregates announced from the RIPE address blocks: 18416
RIPE Region origin ASes present in the Internet Routing Table: 6602
RIPE Region origin ASes announcing only one prefix: 3486
RIPE Region transit ASes present in the Internet Routing Table: 1104
Average RIPE Region AS path length visible: 5.1
Max RIPE Region AS path length visible: 25
Number of RIPE addresses announced to Internet: 202156992
Equivalent to 12 /8s, 12 /16s and 171 /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: 8530
Total LACNIC prefixes after maximum aggregation: 3037
Prefixes being announced from the LACNIC address blocks: 6932
Unique aggregates announced from the LACNIC address blocks: 4046
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: 111
Average LACNIC Region AS path length visible: 5.2
Max LACNIC Region AS path length visible: 21
Number of LACNIC addresses announced to Internet: 18459136
Equivalent to 1 /8s, 25 /16s and 170 /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: 1441
Total AfriNIC prefixes after maximum aggregation: 706
Prefixes being announced from the AfriNIC address blocks: 943
Unique aggregates announced from the AfriNIC address blocks: 749
AfriNIC Region origin ASes present in the Internet Routing Table: 100
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: 2224640
Equivalent to 0 /8s, 33 /16s and 242 /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 183 CHINANET-BACKBONE
1221 773 1192 550 Telstra Pty Ltd
9583 729 53 71 Sify Limited
4766 585 3413 276 Korea Telecom (KIX)
4755 581 245 126 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 315 26 149 Pakistan Telecom
10036 313 28 284 C&M Communication Co. Ltd.
4808 309 251 169 CNCGROUP IP network: China169
7474 299 268 208 SingTel Optus Pty Ltd
9498 287 82 55 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 244 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 1488 6500 957 AT&T WorldNet Services
174 1177 5607 1008 Cogent Communications
721 1116 21763 314 DLA Systems Automation Center
4323 1108 665 225 Time Warner Telecom
701 1007 8282 857 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 801 224 7 Covad Communications
209 653 3460 494 Qwest
20115 609 505 307 Charter Communications
3356 582 10836 437 Level 3 Communications, LLC
3561 541 2365 414 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 481 1188 21 Cox Communications, Inc.
6198 469 542 202 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
702 595 2003 487 UUNET - Commercial IP service
3320 302 2993 236 Deutsche Telekom AG
3301 297 1116 287 TeliaNet Sweden
8220 274 469 268 COLT Telecommunications
680 253 2041 238 DFN-IP service G-WiN
3246 233 491 228 Song Networks
8708 228 251 209 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 167 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 151 184 84 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 373 598 147 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 110 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 89 6 26 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
19632 81 14 7 Metropolis Intercom S.A.
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 60 34 6 RAYA Telecom - Egypt
9129 44 3 3 UUNET Kenya
12455 42 6 4 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
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 65530 *
4323 1108 883 Time Warner Telecom
721 1116 802 DLA Systems Automation Center
18566 801 794 Covad Communications
4134 898 715 CHINANET-BACKBONE
9583 729 658 Sify Limited
27364 539 521 Armstrong Cable Services
6197 895 480 BellSouth Network Solutions,
5668 487 462 CenturyTel Internet Holdings,
22773 481 460 Cox Communications, Inc.
4755 581 455 Videsh Sanchar Nigam Ltd. Aut
7545 492 421 TPG Internet Pty Ltd
3602 506 412 Sprint Canada, Inc.
6467 434 399 E.Spire Communications, Inc.
17676 431 358 Softbank BB Corp.
6140 399 327 ImpSat
9929 361 315 China Netcom Corp.
4766 585 309 Korea Telecom (KIX)
20115 609 302 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 /14:307 /15:583 /16:8373 /17:2530 /18:4362
/19:10244 /20:11065 /21:8919 /22:12310 /23:13273 /24:87830
/25:280 /26:269 /27:142 /28:75 /29:38 /30:70
/31:0 /32:29
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
18566 785 801 Covad Communications
6197 734 895 BellSouth Network Solutions,
7018 673 1488 AT&T WorldNet Services
2386 601 847 AT&T Data Communications Serv
9583 545 729 Sify Limited
27364 528 539 Armstrong Cable Services
4323 520 1108 Time Warner Telecom
5668 404 487 CenturyTel Internet Holdings,
4766 402 585 Korea Telecom (KIX)
1239 382 910 Sprint
702 367 595 UUNET - Commercial IP service
6198 339 469 BellSouth Network Solutions,
6467 313 434 E.Spire Communications, Inc.
10036 313 313 C&M Communication Co. Ltd.
6517 296 319 Yipes Communications, Inc.
7011 296 346 Citizens Utilities
9929 282 361 China Netcom Corp.
11456 276 318 Carolina Online, Inc.
15270 258 278 PaeTec.net -a division of Pae
174 249 1177 Cogent Communications
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:4 8:12 12:1529 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 59:28 60:22
61:784 62:595 63:1878 64:2687 65:2066 66:2795
67:563 68:521 69:994 70:94 71:6 72:165
80:555 81:546 82:396 83:244 84:162 85:180
86:6 128:148 129:158 130:84 131:279 132:36
133:1 134:148 135:40 136:191 137:65 138:171
139:55 140:191 141:106 142:142 143:134 144:167
145:33 146:280 147:104 148:296 149:169 150:97
151:65 152:107 153:87 154:5 155:143 156:77
157:92 158:167 159:173 160:77 161:61 162:203
163:83 164:207 165:178 166:155 167:231 168:417
169:140 170:315 171:8 172:2 192:5701 193:3177
194:2341 195:1548 196:652 198:3937 199:3287 200:3851
201:113 202:5528 203:6129 204:3820 205:2015 206:2471
207:2761 208:2060 209:3268 210:1695 211:840 212:1191
213:1284 214:275 215:32 216:3513 217:1139 218:192
219:105 220:373 221:203 222:91
End of report
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