Weekly Routing Table Report
Routing Table Analysis
cscora at apnic.net
Fri Jun 3 18:06:26 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 04 Jun, 2005
Analysis Summary
----------------
BGP routing table entries examined: 163814
Prefixes after maximum aggregation: 94933
Unique aggregates announced to Internet: 78989
Total ASes present in the Internet Routing Table: 19783
Origin-only ASes present in the Internet Routing Table: 17224
Origin ASes announcing only one prefix: 8080
Transit ASes present in the Internet Routing Table: 2559
Transit-only ASes present in the Internet Routing Table: 73
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: 14
Number of addresses announced to Internet: 1414258528
Equivalent to 84 /8s, 75 /16s and 223 /24s
Percentage of available address space announced: 38.2
Percentage of allocated address space announced: 59.9
Percentage of available address space allocated: 63.7
Total number of prefixes smaller than registry allocations: 77173
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 33699
Total APNIC prefixes after maximum aggregation: 15728
Prefixes being announced from the APNIC address blocks: 31597
Unique aggregates announced from the APNIC address blocks: 15795
APNIC Region origin ASes present in the Internet Routing Table: 2284
APNIC Region origin ASes announcing only one prefix: 668
APNIC Region transit ASes present in the Internet Routing Table: 348
Average APNIC Region AS path length visible: 4.4
Max APNIC Region AS path length visible: 19
Number of APNIC addresses announced to Internet: 186078080
Equivalent to 11 /8s, 23 /16s and 83 /24s
Percentage of available APNIC address space announced: 69.0
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: 88409
Total ARIN prefixes after maximum aggregation: 53883
Prefixes being announced from the ARIN address blocks: 69080
Unique aggregates announced from the ARIN address blocks: 25401
ARIN Region origin ASes present in the Internet Routing Table: 9978
ARIN Region origin ASes announcing only one prefix: 3655
ARIN Region transit ASes present in the Internet Routing Table: 941
Average ARIN Region AS path length visible: 4.3
Max ARIN Region AS path length visible: 18
Number of ARIN addresses announced to Internet: 249193216
Equivalent to 14 /8s, 218 /16s and 99 /24s
Percentage of available ARIN address space announced: 70.7
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: 31152
Total RIPE prefixes after maximum aggregation: 21491
Prefixes being announced from the RIPE address blocks: 28231
Unique aggregates announced from the RIPE address blocks: 18967
RIPE Region origin ASes present in the Internet Routing Table: 6708
RIPE Region origin ASes announcing only one prefix: 3530
RIPE Region transit ASes present in the Internet Routing Table: 1103
Average RIPE Region AS path length visible: 5.2
Max RIPE Region AS path length visible: 26
Number of RIPE addresses announced to Internet: 207269312
Equivalent to 12 /8s, 90 /16s and 173 /24s
Percentage of available RIPE address space announced: 72.7
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: 8871
Total LACNIC prefixes after maximum aggregation: 3068
Prefixes being announced from the LACNIC address blocks: 7267
Unique aggregates announced from the LACNIC address blocks: 4207
LACNIC Region origin ASes present in the Internet Routing Table: 620
LACNIC Region origin ASes announcing only one prefix: 192
LACNIC Region transit ASes present in the Internet Routing Table: 118
Average LACNIC Region AS path length visible: 5.2
Max LACNIC Region AS path length visible: 21
Number of LACNIC addresses announced to Internet: 19063584
Equivalent to 1 /8s, 34 /16s and 227 /24s
Percentage of available LACNIC address space announced: 56.8
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: 1659
Total AfriNIC prefixes after maximum aggregation: 763
Prefixes being announced from the AfriNIC address blocks: 1004
Unique aggregates announced from the AfriNIC address blocks: 777
AfriNIC Region origin ASes present in the Internet Routing Table: 126
AfriNIC Region origin ASes announcing only one prefix: 35
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: 2280192
Equivalent to 0 /8s, 34 /16s and 203 /24s
Percentage of available AfriNIC address space announced: 6.8
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 910 5146 190 CHINANET-BACKBONE
1221 753 1438 542 Telstra Pty Ltd
9583 751 55 61 Sify Limited
4755 608 246 123 Videsh Sanchar Nigam Ltd. Aut
4766 595 3413 279 Korea Telecom (KIX)
7545 501 88 72 TPG Internet Pty Ltd
17676 436 6589 75 Softbank BB Corp.
9443 370 77 76 Primus Telecommunications
9929 364 221 48 China Netcom Corp.
2907 338 1805 315 SINET Japan
10036 322 29 290 C&M Communication Co. Ltd.
17557 314 22 151 Pakistan Telecom
7474 310 271 213 SingTel Optus Pty Ltd
4808 308 250 169 CNCGROUP IP network: China169
9498 306 83 61 BHARTI BT INTERNET LTD.
4802 286 48 163 Wantree Development
17974 265 65 14 PT TELEKOMUNIKASI INDONESIA
18302 264 108 148 SK Global co., Ltd
17488 256 16 7 Hathway IP Over Cable Interne
2764 254 238 199 AAPT Limited
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
7018 1488 6459 967 AT&T WorldNet Services
174 1196 5611 1025 Cogent Communications
4323 1123 647 217 Time Warner Telecom
721 1109 21787 313 DLA Systems Automation Center
701 1016 8186 855 UUNET Technologies, Inc.
6197 918 498 436 BellSouth Network Solutions,
1239 890 2869 645 Sprint
2386 856 532 636 AT&T Data Communications Serv
18566 814 224 7 Covad Communications
209 653 3505 496 Qwest
20115 615 507 314 Charter Communications
3356 572 10842 437 Level 3 Communications, LLC
27364 564 43 18 Armstrong Cable Services
3561 533 2384 419 Savvis
852 528 1095 390 Telus Advanced Communications
3602 527 123 101 Sprint Canada, Inc.
5668 489 115 25 CenturyTel Internet Holdings,
22773 488 1188 23 Cox Communications, Inc.
7725 482 60 15 MediaOne
6198 465 386 220 BellSouth Network Solutions,
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 594 2001 486 UUNET - Commercial IP service
3320 304 3232 241 Deutsche Telekom AG
3301 297 1085 285 TeliaNet Sweden
8220 273 469 267 COLT Telecommunications
680 252 2041 238 DFN-IP service G-WiN
8708 230 254 214 Romania Data Systems S.A.
3246 228 490 223 Song Networks
1257 198 712 174 SWIPnet Swedish IP Network
5515 178 778 128 Sonera Solution Autonomous Sy
786 176 1794 176 The JANET IP Service
719 170 340 102 LANLINK autonomous system
6746 167 47 146 Dynamic Network Technologies,
3269 166 1496 69 TELECOM ITALIA
5400 160 285 136 BT Ignite European Backbone
8866 156 21 11 Bulgarian Telecommunication C
3300 153 184 86 AUCS Communications Services
6830 137 513 27 UPC Distribution Services
25186 135 137 95 France Telecom Transpac's Tra
1273 131 170 94 Cable & Wireless Deutschland
9051 131 8 30 INCONET Autonomous System
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
8151 390 599 152 UniNet S.A. de C.V.
16814 265 16 7 NSS, S.A.
11172 221 98 53 Servicios Alestra S.A de C.V
11664 195 19 22 Keytech SA
6147 190 102 20 Telefonica Del Peru
7303 149 68 21 Telecom Argentina Stet-France
14117 136 9 5 Telefonica del Sur S.A.
6505 133 90 89 Global One Communicaoes Ltda
22047 131 96 6 VTR PUNTO NET S.A.
11556 130 64 3 Cable-Wireless Panama
13999 113 52 9 Mega Cable S.A. de C.V.
6503 107 146 73 AVANTEL, S.A.
19632 107 14 5 Metropolis Intercom S.A.
18822 106 7 12 TELEFONICA MANQUEHUE
19169 102 6 17 Telconet
10481 101 40 7 Prima S.A.
22927 97 73 25 TELEFONICA DE ARGENTINA
23216 95 24 23 RAMtelecom Telecomunicaciones
21826 93 12 19 INTERCABLE
11311 89 8 18 Sinectis S.A.
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
3741 266 637 223 The Internet Solution
5536 119 15 17 Internet Egypt Network
2018 91 295 86 Tertiary Education Network
20928 91 16 2 Noor Advanced Technologies AS
8452 78 28 6 TEDATA
2905 74 266 66 The Internetworking Company o
24835 63 34 6 RAYA Telecom - Egypt
6713 59 54 8 Itissalat Al-MAGHRIB
9129 40 3 2 UUNET Kenya
12455 38 6 3 Jambonet Autonomous system
5713 36 142 29 Telkom SA Ltd
15475 32 84 4 Nile Online
2609 31 26 3 Tunisia BackBone AS
15706 31 8 3 Sudatel Internet Exchange Aut
8524 24 1 4 AUCEGYPT Autonomous System
16637 22 10 19 Johnnic e-Ventures
33765 20 3 8 TANZANIA TELECOMMUNICATIONS C
10798 19 1 11 Standard Bank of South Africa
23889 18 5 6 MAURITIUS TELECOM
7460 17 3 5 LIA Internet Access
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
4323 1123 906 Time Warner Telecom
18566 814 807 Covad Communications
721 1109 796 DLA Systems Automation Center
4134 910 720 CHINANET-BACKBONE
9583 751 690 Sify Limited
27364 564 546 Armstrong Cable Services
4755 608 485 Videsh Sanchar Nigam Ltd. Aut
6197 918 482 BellSouth Network Solutions,
7725 482 467 MediaOne
22773 488 465 Cox Communications, Inc.
5668 489 464 CenturyTel Internet Holdings,
7545 501 429 TPG Internet Pty Ltd
3602 527 426 Sprint Canada, Inc.
6467 424 390 E.Spire Communications, Inc.
17676 436 361 Softbank BB Corp.
6140 405 328 ImpSat
4766 595 316 Korea Telecom (KIX)
9929 364 316 China Netcom Corp.
20115 615 301 Charter Communications
9443 370 294 Primus Telecommunications
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
65009 PRIVATE 69.39.0.0/20 21803 1st Class Internet S
65050 PRIVATE 168.96.148.0/24 6140 ImpSat
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
64512 PRIVATE 200.61.32.0/23 11664 Keytech SA
64512 PRIVATE 200.61.48.0/20 11664 Keytech SA
64512 PRIVATE 200.61.62.0/23 11664 Keytech SA
64512 PRIVATE 200.80.154.0/23 11664 Keytech SA
65005 PRIVATE 203.200.197.0/24 4755 Videsh Sanchar Nigam
65444 PRIVATE 212.25.125.0/24 8551 Bezeq International
65024 PRIVATE 213.57.10.0/24 12849 Nonstop Internet Pro
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
192.172.0.0/19 721 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 /12:72
/13:158 /14:308 /15:598 /16:8410 /17:2566 /18:4415
/19:10354 /20:11224 /21:9175 /22:12579 /23:13696 /24:89297
/25:319 /26:271 /27:140 /28:45 /29:31 /30:78
/31:0 /32:33
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
18566 798 814 Covad Communications
6197 749 918 BellSouth Network Solutions,
7018 679 1488 AT&T WorldNet Services
2386 605 856 AT&T Data Communications Serv
9583 567 751 Sify Limited
27364 555 564 Armstrong Cable Services
4323 537 1123 Time Warner Telecom
7725 453 482 MediaOne
4766 412 595 Korea Telecom (KIX)
5668 403 489 CenturyTel Internet Holdings,
1239 374 890 Sprint
702 366 594 UUNET - Commercial IP service
6198 340 465 BellSouth Network Solutions,
10036 322 322 C&M Communication Co. Ltd.
7011 304 354 Citizens Utilities
6467 297 424 E.Spire Communications, Inc.
9929 283 364 China Netcom Corp.
6517 273 295 Yipes Communications, Inc.
15270 273 293 PaeTec.net -a division of Pae
11456 270 309 Carolina Online, Inc.
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:3 8:15 12:1551 13:1 15:9 16:2
17:3 18:3 20:4 24:1159 30:2 32:69
33:4 38:122 40:53 44:3 47:2 52:4
55:2 56:3 57:21 58:88 59:41 60:49
61:815 62:611 63:1890 64:2752 65:2067 66:2859
67:575 68:526 69:1044 70:113 71:8 72:212
80:577 81:555 82:408 83:266 84:193 85:246
86:19 128:187 129:171 130:85 131:273 132:37
133:1 134:150 135:40 136:184 137:69 138:168
139:61 140:192 141:101 142:149 143:145 144:183
145:33 146:283 147:104 148:302 149:165 150:105
151:65 152:107 153:86 154:5 155:143 156:78
157:95 158:160 159:171 160:78 161:67 162:205
163:86 164:210 165:177 166:159 167:233 168:424
169:140 170:310 171:8 172:1 192:5721 193:3181
194:2407 195:1547 196:661 198:3934 199:3291 200:3979
201:142 202:5670 203:6241 204:3776 205:1998 206:2496
207:2808 208:2063 209:3302 210:1702 211:840 212:1205
213:1287 214:264 215:31 216:3452 217:1136 218:202
219:106 220:377 221:225 222:108
End of report
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