Routing Table Report 04:00 +10GMT Thu 12 May, 2011
Report Website: http://thyme.rand.apnic.net
Detailed Analysis: http://thyme.rand.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 357151
Prefixes after maximum aggregation: 161508
Deaggregation factor: 2.21
Unique aggregates announced to Internet: 176103
Total ASes present in the Internet Routing Table: 37534
Prefixes per ASN: 9.52
Origin-only ASes present in the Internet Routing Table: 31381
Origin ASes announcing only one prefix: 15092
Transit ASes present in the Internet Routing Table: 5086
Transit-only ASes present in the Internet Routing Table: 137
Average AS path length visible in the Internet Routing Table: 4.3
Max AS path length visible: 36
Max AS path prepend of ASN (48687) 24
Prefixes from unregistered ASNs in the Routing Table: 607
Unregistered ASNs in the Routing Table: 312
Number of 32-bit ASNs allocated by the RIRs: 1336
Number of 32-bit ASNs visible in the Routing Table: 1067
Prefixes from 32-bit ASNs in the Routing Table: 2390
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 157
Number of addresses announced to Internet: 2425449408
Equivalent to 144 /8s, 145 /16s and 107 /24s
Percentage of available address space announced: 65.4
Percentage of allocated address space announced: 65.4
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 90.7
Total number of prefixes smaller than registry allocations: 148430
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 89354
Total APNIC prefixes after maximum aggregation: 29972
APNIC Deaggregation factor: 2.98
Prefixes being announced from the APNIC address blocks: 85712
Unique aggregates announced from the APNIC address blocks: 36642
APNIC Region origin ASes present in the Internet Routing Table: 4442
APNIC Prefixes per ASN: 19.30
APNIC Region origin ASes announcing only one prefix: 1235
APNIC Region transit ASes present in the Internet Routing Table: 706
Average APNIC Region AS path length visible: 4.5
Max APNIC Region AS path length visible: 18
Number of APNIC region 32-bit ASNs visible in the Routing Table: 47
Number of APNIC addresses announced to Internet: 614185248
Equivalent to 36 /8s, 155 /16s and 185 /24s
Percentage of available APNIC address space announced: 77.9
APNIC AS Blocks 4608-4864, 7467-7722, 9216-10239, 17408-18431
(pre-ERX allocations) 23552-24575, 37888-38911, 45056-46079
55296-56319, 131072-132095
APNIC Address Blocks 1/8, 14/8, 27/8, 36/8, 39/8, 42/8, 43/8,
49/8, 58/8, 59/8, 60/8, 61/8, 101/8, 103/8,
106/8, 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, 133/8, 175/8, 180/8,
182/8, 183/8, 202/8, 203/8, 210/8, 211/8, 218/8,
219/8, 220/8, 221/8, 222/8, 223/8,
ARIN Region Analysis Summary
----------------------------
Prefixes being announced by ARIN Region ASes: 140600
Total ARIN prefixes after maximum aggregation: 71392
ARIN Deaggregation factor: 1.97
Prefixes being announced from the ARIN address blocks: 112872
Unique aggregates announced from the ARIN address blocks: 45427
ARIN Region origin ASes present in the Internet Routing Table: 14369
ARIN Prefixes per ASN: 7.86
ARIN Region origin ASes announcing only one prefix: 5497
ARIN Region transit ASes present in the Internet Routing Table: 1492
Average ARIN Region AS path length visible: 4.0
Max ARIN Region AS path length visible: 23
Number of ARIN region 32-bit ASNs visible in the Routing Table: 12
Number of ARIN addresses announced to Internet: 800151296
Equivalent to 47 /8s, 177 /16s and 87 /24s
Percentage of available ARIN address space announced: 63.6
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
53248-55295, 393216-394239
ARIN Address Blocks 3/8, 4/8, 6/8, 7/8, 8/8, 9/8, 11/8,
12/8, 13/8, 15/8, 16/8, 17/8, 18/8, 19/8,
20/8, 21/8, 22/8, 23/8, 24/8, 26/8, 28/8,
29/8, 30/8, 32/8, 33/8, 34/8, 35/8, 38/8,
40/8, 44/8, 45/8, 47/8, 48/8, 50/8, 52/8,
53/8, 54/8, 55/8, 56/8, 57/8, 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, 100/8, 104/8, 107/8, 108/8, 173/8,
174/8, 184/8, 199/8, 204/8, 205/8, 206/8, 207/8,
208/8, 209/8, 214/8, 215/8, 216/8,
RIPE Region Analysis Summary
----------------------------
Prefixes being announced by RIPE Region ASes: 84172
Total RIPE prefixes after maximum aggregation: 48084
RIPE Deaggregation factor: 1.75
Prefixes being announced from the RIPE address blocks: 77651
Unique aggregates announced from the RIPE address blocks: 51327
RIPE Region origin ASes present in the Internet Routing Table: 15566
RIPE Prefixes per ASN: 4.99
RIPE Region origin ASes announcing only one prefix: 7792
RIPE Region transit ASes present in the Internet Routing Table: 2458
Average RIPE Region AS path length visible: 4.7
Max RIPE Region AS path length visible: 36
Number of RIPE region 32-bit ASNs visible in the Routing Table: 788
Number of RIPE addresses announced to Internet: 468382208
Equivalent to 27 /8s, 234 /16s and 242 /24s
Percentage of available RIPE address space announced: 75.5
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, 56320-58367
196608-198655
RIPE Address Blocks 2/8, 5/8, 25/8, 31/8, 37/8, 46/8, 51/8,
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,
176/8, 178/8, 185/8, 193/8, 194/8, 195/8, 212/8,
213/8, 217/8,
LACNIC Region Analysis Summary
------------------------------
Prefixes being announced by LACNIC Region ASes: 32679
Total LACNIC prefixes after maximum aggregation: 7505
LACNIC Deaggregation factor: 4.35
Prefixes being announced from the LACNIC address blocks: 31721
Unique aggregates announced from the LACNIC address blocks: 16674
LACNIC Region origin ASes present in the Internet Routing Table: 1452
LACNIC Prefixes per ASN: 21.85
LACNIC Region origin ASes announcing only one prefix: 432
LACNIC Region transit ASes present in the Internet Routing Table: 269
Average LACNIC Region AS path length visible: 4.4
Max LACNIC Region AS path length visible: 19
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 215
Number of LACNIC addresses announced to Internet: 83321088
Equivalent to 4 /8s, 247 /16s and 97 /24s
Percentage of available LACNIC address space announced: 55.2
LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247,
262144-263167 plus ERX transfers
LACNIC Address Blocks 177/8, 179/8, 181/8, 186/8, 187/8, 189/8, 190/8,
200/8, 201/8,
AfriNIC Region Analysis Summary
-------------------------------
Prefixes being announced by AfriNIC Region ASes: 7741
Total AfriNIC prefixes after maximum aggregation: 1844
AfriNIC Deaggregation factor: 4.20
Prefixes being announced from the AfriNIC address blocks: 6102
Unique aggregates announced from the AfriNIC address blocks: 1899
AfriNIC Region origin ASes present in the Internet Routing Table: 449
AfriNIC Prefixes per ASN: 13.59
AfriNIC Region origin ASes announcing only one prefix: 136
AfriNIC Region transit ASes present in the Internet Routing Table: 97
Average AfriNIC Region AS path length visible: 4.7
Max AfriNIC Region AS path length visible: 24
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 5
Number of AfriNIC addresses announced to Internet: 23076864
Equivalent to 1 /8s, 96 /16s and 32 /24s
Percentage of available AfriNIC address space announced: 34.4
AfriNIC AS Blocks 36864-37887, 327680-328703 & ERX transfers
AfriNIC Address Blocks 41/8, 102/8, 105/8, 197/8,
APNIC Region per AS prefix count summary
----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
4766 2457 9526 922 Korea Telecom (KIX)
17974 1823 515 29 PT TELEKOMUNIKASI INDONESIA
7545 1546 301 86 TPG Internet Pty Ltd
4755 1461 634 167 TATA Communications formerly
24560 1151 336 184 Bharti Airtel Ltd., Telemedia
7552 1105 1064 7 Vietel Corporation
9583 1079 80 510 Sify Limited
9829 1039 874 51 BSNL National Internet Backbo
4808 1036 2087 294 CNCGROUP IP network: China169
17488 943 165 100 Hathway IP Over Cable Interne
Complete listing at http://thyme.rand.apnic.net/current/data-ASnet-APNIC
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
6389 3648 3822 255 bellsouth.net, inc.
4323 2562 1088 399 Time Warner Telecom
18566 1800 355 232 Covad Communications
1785 1773 680 122 PaeTec Communications, Inc.
6478 1669 313 52 AT&T Worldnet Services
20115 1535 1540 634 Charter Communications
19262 1497 4949 298 Verizon Global Networks
7018 1358 6927 887 AT&T WorldNet Services
22773 1328 2897 87 Cox Communications, Inc.
11492 1279 240 15 Cable One
Complete listing at http://thyme.rand.apnic.net/current/data-ASnet-ARIN
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
6830 519 1780 321 UPC Distribution Services
34984 511 106 183 BILISIM TELEKOM
3292 458 1998 392 TDC Tele Danmark
20940 446 131 342 Akamai Technologies European
29049 443 33 43 AzerSat LLC.
8866 442 134 26 Bulgarian Telecommunication C
12479 425 577 6 Uni2 Autonomous System
3320 420 7608 367 Deutsche Telekom AG
8402 407 320 11 Corbina telecom
8551 405 355 45 Bezeq International
Complete listing at http://thyme.rand.apnic.net/current/data-ASnet-RIPE
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
10620 1467 270 155 TVCABLE BOGOTA
8151 1369 2700 362 UniNet S.A. de C.V.
28573 1307 990 86 NET Servicos de Comunicao S.A
7303 930 470 149 Telecom Argentina Stet-France
6503 734 354 73 AVANTEL, S.A.
14420 665 53 91 CORPORACION NACIONAL DE TELEC
22047 554 310 15 VTR PUNTO NET S.A.
3816 517 226 99 Empresa Nacional de Telecomun
11172 495 84 83 Servicios Alestra S.A de C.V
13489 489 238 119 Orbitel S.A. E.S.P.
Complete listing at http://thyme.rand.apnic.net/current/data-ASnet-LACNIC
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
8452 894 445 11 TEDATA
24863 782 147 37 LINKdotNET AS number
15475 415 90 8 Nile Online
36992 288 331 17 Etisalat MISR
3741 268 985 228 The Internet Solution
6713 241 215 13 Itissalat Al-MAGHRIB
24835 207 78 10 RAYA Telecom - Egypt
33776 192 12 10 Starcomms Nigeria Limited
29571 161 17 11 Ci Telecom Autonomous system
16637 150 441 86 MTN Network Solutions
Complete listing at http://thyme.rand.apnic.net/current/data-ASnet-AFRINIC
Global Per AS prefix count summary
----------------------------------
ASN No of nets /20 equiv MaxAgg Description
6389 3648 3822 255 bellsouth.net, inc.
4323 2562 1088 399 Time Warner Telecom
4766 2457 9526 922 Korea Telecom (KIX)
23456 2390 679 1308 32-bit ASN transition
17974 1823 515 29 PT TELEKOMUNIKASI INDONESIA
18566 1800 355 232 Covad Communications
1785 1773 680 122 PaeTec Communications, Inc.
6478 1669 313 52 AT&T Worldnet Services
7545 1546 301 86 TPG Internet Pty Ltd
20115 1535 1540 634 Charter Communications
Complete listing at http://thyme.rand.apnic.net/current/data-ASnet
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
4323 2562 2163 Time Warner Telecom
17974 1823 1794 PT TELEKOMUNIKASI INDONESIA
1785 1773 1651 PaeTec Communications, Inc.
6478 1669 1617 AT&T Worldnet Services
18566 1800 1568 Covad Communications
4766 2457 1535 Korea Telecom (KIX)
7545 1546 1460 TPG Internet Pty Ltd
10620 1467 1312 TVCABLE BOGOTA
4755 1461 1294 TATA Communications formerly
11492 1279 1264 Cable One
Complete listing at http://thyme.rand.apnic.net/current/data-CIDRnet
List of Unregistered Origin ASNs (Global)
-----------------------------------------
Bad AS Designation Network Transit AS Description
15132 UNALLOCATED 12.9.150.0/24 7018 AT&T WorldNet Servic
32567 UNALLOCATED 12.14.170.0/24 4323 Time Warner Telecom
32567 UNALLOCATED 12.25.107.0/24 4323 Time Warner Telecom
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 12.39.155.0/24 7018 AT&T WorldNet Servic
26973 UNALLOCATED 12.39.159.0/24 7018 AT&T WorldNet Servic
25639 UNALLOCATED 12.41.169.0/24 7018 AT&T WorldNet Servic
13317 UNALLOCATED 12.44.10.0/24 7018 AT&T WorldNet Servic
23502 UNALLOCATED 12.44.44.0/24 7018 AT&T WorldNet Servic
Complete listing at http://thyme.rand.apnic.net/current/data-badAS
Advertised Unallocated Addresses
--------------------------------
Network Origin AS Description
24.225.128.0/18 36377 Comcast Telecommunications, I
24.225.192.0/23 36377 Comcast Telecommunications, I
24.225.192.0/18 36377 Comcast Telecommunications, I
24.225.224.0/21 36377 Comcast Telecommunications, I
24.225.237.0/24 36377 Comcast Telecommunications, I
24.225.248.0/21 36377 Comcast Telecommunications, I
31.130.240.0/21 51333 Skynet Trading SRL
31.211.184.0/21 174 Cogent Communications
31.220.136.0/21 31078 Netsign GmbH
41.222.79.0/24 36938 >>UNKNOWN<<
Complete listing at http://thyme.rand.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 /8:20 /9:12 /10:28 /11:78 /12:223
/13:459 /14:790 /15:1392 /16:11723 /17:5763 /18:9703
/19:19299 /20:25536 /21:25813 /22:34081 /23:32870 /24:186109
/25:1092 /26:1274 /27:710 /28:160 /29:8 /30:2
/31:0 /32:6
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2249 3648 bellsouth.net, inc.
18566 1762 1800 Covad Communications
6478 1623 1669 AT&T Worldnet Services
10620 1357 1467 TVCABLE BOGOTA
4323 1271 2562 Time Warner Telecom
11492 1225 1279 Cable One
23456 1164 2390 32-bit ASN transition
7011 1062 1162 Citizens Utilities
1785 1051 1773 PaeTec Communications, Inc.
22773 845 1328 Cox Communications, Inc.
Complete listing at http://thyme.rand.apnic.net/current/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:263 2:58 4:14 5:1 6:3 8:353
12:1986 13:1 14:454 15:15 16:3 17:8
20:10 23:6 24:1640 27:737 31:314 32:60
33:3 34:2 37:1 38:763 40:101 41:2448
42:5 44:3 46:902 47:4 49:172 50:395
52:13 55:6 56:2 57:30 58:847 59:483
60:387 61:1254 62:986 63:1925 64:3941 65:2298
66:4317 67:1872 68:1093 69:2978 70:697 71:347
72:1883 73:1 74:2342 75:308 76:342 77:869
78:690 79:461 80:1096 81:817 82:493 83:448
84:627 85:1073 86:593 87:745 88:327 89:1591
90:200 91:3714 92:512 93:1053 94:1248 95:810
96:482 97:255 98:840 99:35 101:70 103:12
106:1 107:6 108:85 109:940 110:584 111:710
112:321 113:400 114:533 115:663 116:946 117:683
118:817 119:1150 120:305 121:677 122:1619 123:1076
124:1254 125:1223 128:259 129:166 130:165 131:569
132:110 133:19 134:218 135:49 136:214 137:143
138:302 139:113 140:481 141:239 142:400 143:398
144:487 145:53 146:440 147:210 148:581 149:243
150:170 151:187 152:310 153:179 154:3 155:395
156:194 157:351 158:131 159:387 160:315 161:206
162:279 163:163 164:499 165:351 166:513 167:429
168:725 169:153 170:794 171:76 172:1 173:1552
174:551 175:370 177:120 178:906 180:828 181:20
182:436 183:208 184:262 185:1 186:1154 187:758
188:820 189:901 190:4797 192:5797 193:4844 194:3476
195:2972 196:1191 197:16 198:3561 199:3902 200:5536
201:1501 202:8355 203:8456 204:4149 205:2325 206:2751
207:3049 208:3972 209:3486 210:2729 211:1376 212:1982
213:1726 214:737 215:69 216:4893 217:1663 218:565
219:371 220:1204 221:482 222:342 223:146
End of report
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