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From: Routing Analysis Role Account (no email)
Date: Fri Apr 03 2009 - 14:14:51 EDT
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
For historical data, please see http://thyme.apnic.net.
If you have any comments please contact Philip Smith <>.
Routing Table Report 04:00 +10GMT Sat 04 Apr, 2009
Report Website: http://thyme.apnic.net
Detailed Analysis: http://thyme.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 284279
Prefixes after maximum aggregation: 134697
Deaggregation factor: 2.11
Unique aggregates announced to Internet: 139818
Total ASes present in the Internet Routing Table: 30933
Prefixes per ASN: 9.19
Origin-only ASes present in the Internet Routing Table: 26928
Origin ASes announcing only one prefix: 13076
Transit ASes present in the Internet Routing Table: 4005
Transit-only ASes present in the Internet Routing Table: 98
Average AS path length visible in the Internet Routing Table: 3.6
Max AS path length visible: 28
Max AS path prepend of ASN (12445) 18
Prefixes from unregistered ASNs in the Routing Table: 470
Unregistered ASNs in the Routing Table: 159
Number of 32-bit ASNs allocated by the RIRs: 138
Prefixes from 32-bit ASNs in the Routing Table: 19
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 226
Number of addresses announced to Internet: 2024619360
Equivalent to 120 /8s, 173 /16s and 61 /24s
Percentage of available address space announced: 54.6
Percentage of allocated address space announced: 63.9
Percentage of available address space allocated: 85.5
Percentage of address space in use by end-sites: 76.2
Total number of prefixes smaller than registry allocations: 139764
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 65840
Total APNIC prefixes after maximum aggregation: 23485
APNIC Deaggregation factor: 2.80
Prefixes being announced from the APNIC address blocks: 62608
Unique aggregates announced from the APNIC address blocks: 28689
APNIC Region origin ASes present in the Internet Routing Table: 3591
APNIC Prefixes per ASN: 17.43
APNIC Region origin ASes announcing only one prefix: 964
APNIC Region transit ASes present in the Internet Routing Table: 554
Average APNIC Region AS path length visible: 3.6
Max APNIC Region AS path length visible: 16
Number of APNIC addresses announced to Internet: 409929248
Equivalent to 24 /8s, 111 /16s and 6 /24s
Percentage of available APNIC address space announced: 81.4
APNIC AS Blocks 4608-4864, 7467-7722, 9216-10239, 17408-18431
(pre-ERX allocations) 23552-24575, 37888-38911, 45056-46079
APNIC Address Blocks 58/8, 59/8, 60/8, 61/8, 110/8, 111/8, 112/8,
113/8, 114/8, 115/8, 116/8, 117/8, 118/8, 119/8,
120/8, 121/8, 122/8, 123/8, 124/8, 125/8, 126/8,
202/8, 203/8, 210/8, 211/8, 218/8, 219/8, 220/8,
221/8, 222/8,
ARIN Region Analysis Summary
----------------------------
Prefixes being announced by ARIN Region ASes: 124467
Total ARIN prefixes after maximum aggregation: 65792
ARIN Deaggregation factor: 1.89
Prefixes being announced from the ARIN address blocks: 93786
Unique aggregates announced from the ARIN address blocks: 36438
ARIN Region origin ASes present in the Internet Routing Table: 12879
ARIN Prefixes per ASN: 7.28
ARIN Region origin ASes announcing only one prefix: 4954
ARIN Region transit ASes present in the Internet Routing Table: 1241
Average ARIN Region AS path length visible: 3.3
Max ARIN Region AS path length visible: 20
Number of ARIN addresses announced to Internet: 420976128
Equivalent to 25 /8s, 23 /16s and 150 /24s
Percentage of available ARIN address space announced: 80.9
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, 39936-40959, 46080-47103
ARIN Address Blocks 24/8, 63/8, 64/8, 65/8, 66/8, 67/8, 68/8,
69/8, 70/8, 71/8, 72/8, 73/8, 74/8, 75/8,
76/8, 96/8, 97/8, 98/8, 99/8, 108/8, 173/8,
174/8, 184/8, 199/8, 204/8, 205/8, 206/8, 207/8,
208/8, 209/8, 216/8,
RIPE Region Analysis Summary
----------------------------
Prefixes being announced by RIPE Region ASes: 65066
Total RIPE prefixes after maximum aggregation: 37870
RIPE Deaggregation factor: 1.72
Prefixes being announced from the RIPE address blocks: 59653
Unique aggregates announced from the RIPE address blocks: 39647
RIPE Region origin ASes present in the Internet Routing Table: 12843
RIPE Prefixes per ASN: 4.64
RIPE Region origin ASes announcing only one prefix: 6726
RIPE Region transit ASes present in the Internet Routing Table: 1932
Average RIPE Region AS path length visible: 4.0
Max RIPE Region AS path length visible: 26
Number of RIPE addresses announced to Internet: 392241952
Equivalent to 23 /8s, 97 /16s and 35 /24s
Percentage of available RIPE address space announced: 83.5
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, 38912-39935
40960-45055, 47104-52223
RIPE Address Blocks 62/8, 77/8, 78/8, 79/8, 80/8, 81/8, 82/8,
83/8, 84/8, 85/8, 86/8, 87/8, 88/8, 89/8,
90/8, 91/8, 92/8, 93/8, 94/8, 95/8, 109/8,
178/8, 193/8, 194/8, 195/8, 212/8, 213/8, 217/8,
LACNIC Region Analysis Summary
------------------------------
Prefixes being announced by LACNIC Region ASes: 23658
Total LACNIC prefixes after maximum aggregation: 5819
LACNIC Deaggregation factor: 4.07
Prefixes being announced from the LACNIC address blocks: 21871
Unique aggregates announced from the LACNIC address blocks: 11884
LACNIC Region origin ASes present in the Internet Routing Table: 1087
LACNIC Prefixes per ASN: 20.12
LACNIC Region origin ASes announcing only one prefix: 345
LACNIC Region transit ASes present in the Internet Routing Table: 176
Average LACNIC Region AS path length visible: 4.0
Max LACNIC Region AS path length visible: 28
Number of LACNIC addresses announced to Internet: 62027008
Equivalent to 3 /8s, 178 /16s and 117 /24s
Percentage of available LACNIC address space announced: 61.6
LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247
plus ERX transfers
LACNIC Address Blocks 186/8, 187/8, 189/8, 190/8, 200/8, 201/8,
AfriNIC Region Analysis Summary
-------------------------------
Prefixes being announced by AfriNIC Region ASes: 4817
Total AfriNIC prefixes after maximum aggregation: 1382
AfriNIC Deaggregation factor: 3.49
Prefixes being announced from the AfriNIC address blocks: 4505
Unique aggregates announced from the AfriNIC address blocks: 1345
AfriNIC Region origin ASes present in the Internet Routing Table: 289
AfriNIC Prefixes per ASN: 15.59
AfriNIC Region origin ASes announcing only one prefix: 87
AfriNIC Region transit ASes present in the Internet Routing Table: 55
Average AfriNIC Region AS path length visible: 3.9
Max AfriNIC Region AS path length visible: 15
Number of AfriNIC addresses announced to Internet: 10176000
Equivalent to 0 /8s, 155 /16s and 70 /24s
Percentage of available AfriNIC address space announced: 30.3
AfriNIC AS Blocks 36864-37887 & ERX transfers
AfriNIC Address Blocks 41/8, 197/8,
APNIC Region per AS prefix count summary
----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
4766 1687 6929 394 Korea Telecom (KIX)
17488 1538 121 98 Hathway IP Over Cable Interne
4755 1179 405 179 TATA Communications formerly
9583 1086 86 534 Sify Limited
4134 918 16382 367 CHINANET-BACKBONE
7545 784 164 106 TPG Internet Pty Ltd
18101 754 206 30 Reliance Infocom Ltd Internet
9498 686 297 49 BHARTI BT INTERNET LTD.
24560 680 228 176 Bharti Airtel Ltd.
9829 637 491 20 BSNL National Internet Backbo
Complete listing at http://thyme.apnic.net/current/data-ASnet-APNIC
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
6389 4315 3669 346 bellsouth.net, inc.
209 2656 4151 623 Qwest
4323 1816 1049 376 Time Warner Telecom
1785 1742 717 139 PaeTec Communications, Inc.
20115 1592 1426 725 Charter Communications
7018 1442 5895 1015 AT&T WorldNet Services
6478 1308 296 501 AT&T Worldnet Services
2386 1263 683 905 AT&T Data Communications Serv
11492 1202 192 11 Cable One
3356 1189 10978 450 Level 3 Communications, LLC
Complete listing at http://thyme.apnic.net/current/data-ASnet-ARIN
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
8452 1232 188 7 TEDATA
3292 450 1764 389 TDC Tele Danmark
30890 435 86 194 SC Kappa Invexim SRL
12479 409 578 6 Uni2 Autonomous System
3320 343 7081 294 Deutsche Telekom AG
3215 340 3025 108 France Telecom Transpac
3301 340 1685 305 TeliaNet Sweden
8866 337 109 22 Bulgarian Telecommunication C
29049 322 26 3 AzerSat LLC.
8551 313 288 40 Bezeq International
Complete listing at http://thyme.apnic.net/current/data-ASnet-RIPE
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
8151 1445 2832 235 UniNet S.A. de C.V.
10620 848 193 102 TVCABLE BOGOTA
22047 607 302 14 VTR PUNTO NET S.A.
16814 594 31 10 NSS, S.A.
7303 519 264 74 Telecom Argentina Stet-France
11830 519 294 42 Instituto Costarricense de El
6471 443 96 31 ENTEL CHILE S.A.
11172 411 102 72 Servicios Alestra S.A de C.V
7738 397 794 28 Telecomunicacoes da Bahia S.A
28573 385 526 25 NET Servicos de Comunicao S.A
Complete listing at http://thyme.apnic.net/current/data-ASnet-LACNIC
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
24863 845 76 34 LINKdotNET AS number
20858 293 34 3 This AS will be used to conne
3741 272 858 232 The Internet Solution
2018 242 215 142 Tertiary Education Network
6713 159 150 15 Itissalat Al-MAGHRIB
33783 148 10 8 EEPAD TISP TELECOM & INTERNET
29571 137 15 8 Ci Telecom Autonomous system
5536 123 8 9 Internet Egypt Network
5713 113 507 65 Telkom SA Ltd
33776 109 6 3 Starcomms Nigeria Limited
Complete listing at http://thyme.apnic.net/current/data-ASnet-AFRINIC
Global Per AS prefix count summary
----------------------------------
ASN No of nets /20 equiv MaxAgg Description
6389 4315 3669 346 bellsouth.net, inc.
209 2656 4151 623 Qwest
4323 1816 1049 376 Time Warner Telecom
1785 1742 717 139 PaeTec Communications, Inc.
4766 1687 6929 394 Korea Telecom (KIX)
20115 1592 1426 725 Charter Communications
17488 1538 121 98 Hathway IP Over Cable Interne
8151 1445 2832 235 UniNet S.A. de C.V.
7018 1442 5895 1015 AT&T WorldNet Services
6478 1308 296 501 AT&T Worldnet Services
Complete listing at http://thyme.apnic.net/current/data-ASnet
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
209 2656 2033 Qwest
1785 1742 1603 PaeTec Communications, Inc.
4323 1816 1440 Time Warner Telecom
17488 1538 1440 Hathway IP Over Cable Interne
4766 1687 1293 Korea Telecom (KIX)
8452 1232 1225 TEDATA
8151 1445 1210 UniNet S.A. de C.V.
11492 1202 1191 Cable One
18566 1061 1051 Covad Communications
4755 1179 1000 TATA Communications formerly
Complete listing at http://thyme.apnic.net/current/data-CIDRnet
List of Unregistered Origin ASNs (Global)
-----------------------------------------
Bad AS Designation Network Transit AS Description
16927 UNALLOCATED 12.0.252.0/23 7018 AT&T WorldNet Servic
15132 UNALLOCATED 12.9.150.0/24 7018 AT&T WorldNet Servic
32567 UNALLOCATED 12.14.170.0/24 7018 AT&T WorldNet Servic
13746 UNALLOCATED 12.24.56.0/24 7018 AT&T WorldNet Servic
32567 UNALLOCATED 12.25.107.0/24 7018 AT&T WorldNet Servic
26973 UNALLOCATED 12.39.152.0/24 7018 AT&T WorldNet Servic
26973 UNALLOCATED 12.39.154.0/23 7018 AT&T WorldNet Servic
26973 UNALLOCATED 12.39.159.0/24 7018 AT&T WorldNet Servic
32326 UNALLOCATED 12.40.49.0/24 7018 AT&T WorldNet Servic
25639 UNALLOCATED 12.41.169.0/24 7018 AT&T WorldNet Servic
Complete listing at http://thyme.apnic.net/current/data-badAS
Advertised Unallocated Addresses
--------------------------------
Network Origin AS Description
24.75.116.0/22 10796 ServiceCo LLC - Road Runner
24.246.0.0/17 7018 AT&T WorldNet Services
24.246.128.0/18 7018 AT&T WorldNet Services
41.220.16.0/20 8668 TelOne Zimbabwe P/L
41.223.112.0/22 5713 Telkom SA Ltd
41.223.188.0/24 22351 Intelsat
41.223.189.0/24 26452 Local Communications Networks
62.61.220.0/24 24974 Tachyon Europe BV - Wireless
62.61.221.0/24 24974 Tachyon Europe BV - Wireless
63.140.213.0/24 22555 Universal Talkware Corporatio
Complete listing at http://thyme.apnic.net/current/data-add-IANA
Number of prefixes announced per prefix length (Global)
-------------------------------------------------------
/1:0 /2:0 /3:0 /4:0 /5:0 /6:0
/7:0 /8:19 /9:10 /10:20 /11:56 /12:163
/13:333 /14:590 /15:1147 /16:10411 /17:4658 /18:8021
/19:17048 /20:20269 /21:19962 /22:25500 /23:25315 /24:148796
/25:645 /26:792 /27:352 /28:119 /29:37 /30:9
/31:0 /32:7
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2805 4315 bellsouth.net, inc.
4766 1390 1687 Korea Telecom (KIX)
209 1358 2656 Qwest
17488 1305 1538 Hathway IP Over Cable Interne
8452 1211 1232 TEDATA
11492 1155 1202 Cable One
1785 1150 1742 PaeTec Communications, Inc.
18566 1042 1061 Covad Communications
2386 965 1263 AT&T Data Communications Serv
4323 942 1816 Time Warner Telecom
Complete listing at http://thyme.apnic.net/current/data/sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:13 8:177 12:2207 13:3 15:19 16:3
17:4 20:35 24:1100 32:51 38:547 40:96
41:1974 43:1 44:2 47:22 52:3 55:2
56:3 57:25 58:533 59:621 60:460 61:1109
62:1075 63:2032 64:3641 65:2412 66:3605 67:1494
68:696 69:2554 70:525 71:140 72:1653 73:2
74:1474 75:171 76:310 77:836 78:547 79:311
80:969 81:824 82:527 83:412 84:613 85:1020
86:397 87:633 88:355 89:1442 90:44 91:2113
92:339 93:1129 94:1222 95:822 96:106 97:184
98:245 99:17 109:1 110:36 112:92 113:92
114:223 115:223 116:1140 117:490 118:286 119:665
120:144 121:707 122:1010 123:537 124:954 125:1304
128:222 129:227 130:129 131:415 132:74 133:9
134:188 135:39 136:241 137:153 138:147 139:77
140:421 141:101 142:391 143:327 144:332 145:44
146:373 147:150 148:519 149:235 150:143 151:200
152:150 153:137 154:11 155:269 156:170 157:299
158:129 159:273 160:280 161:134 162:275 163:149
164:478 165:533 166:277 167:361 168:680 169:162
170:476 171:38 172:10 173:260 174:163 178:1
186:8 187:59 188:9 189:325 190:2734 192:5805
193:4227 194:3324 195:2661 196:1057 198:3735 199:3319
200:5488 201:1361 202:7851 203:8093 204:3792 205:2160
206:2384 207:2804 208:3900 209:3437 210:2641 211:1095
212:1528 213:1717 214:69 215:26 216:4539 217:1259
218:361 219:414 220:1206 221:451 222:280
End of report
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