Routing Table Report 04:00 +10GMT Fri 10 Jun, 2011
Report Website: http://thyme.rand.apnic.net
Detailed Analysis: http://thyme.rand.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 359209
Prefixes after maximum aggregation: 162774
Deaggregation factor: 2.21
Unique aggregates announced to Internet: 178136
Total ASes present in the Internet Routing Table: 37836
Prefixes per ASN: 9.49
Origin-only ASes present in the Internet Routing Table: 31585
Origin ASes announcing only one prefix: 15175
Transit ASes present in the Internet Routing Table: 5113
Transit-only ASes present in the Internet Routing Table: 135
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: 773
Unregistered ASNs in the Routing Table: 413
Number of 32-bit ASNs allocated by the RIRs: 1440
Number of 32-bit ASNs visible in the Routing Table: 1138
Prefixes from 32-bit ASNs in the Routing Table: 2632
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 170
Number of addresses announced to Internet: 2487267776
Equivalent to 148 /8s, 64 /16s and 177 /24s
Percentage of available address space announced: 67.1
Percentage of allocated address space announced: 67.1
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 91.0
Total number of prefixes smaller than registry allocations: 149855
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 88967
Total APNIC prefixes after maximum aggregation: 30076
APNIC Deaggregation factor: 2.96
Prefixes being announced from the APNIC address blocks: 85434
Unique aggregates announced from the APNIC address blocks: 36663
APNIC Region origin ASes present in the Internet Routing Table: 4475
APNIC Prefixes per ASN: 19.09
APNIC Region origin ASes announcing only one prefix: 1249
APNIC Region transit ASes present in the Internet Routing Table: 701
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: 619680544
Equivalent to 36 /8s, 239 /16s and 147 /24s
Percentage of available APNIC address space announced: 78.6
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: 140809
Total ARIN prefixes after maximum aggregation: 71677
ARIN Deaggregation factor: 1.96
Prefixes being announced from the ARIN address blocks: 112738
Unique aggregates announced from the ARIN address blocks: 46071
ARIN Region origin ASes present in the Internet Routing Table: 14429
ARIN Prefixes per ASN: 7.81
ARIN Region origin ASes announcing only one prefix: 5509
ARIN Region transit ASes present in the Internet Routing Table: 1515
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: 818787584
Equivalent to 48 /8s, 205 /16s and 181 /24s
Percentage of available ARIN address space announced: 65.1
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: 85503
Total RIPE prefixes after maximum aggregation: 48663
RIPE Deaggregation factor: 1.76
Prefixes being announced from the RIPE address blocks: 78934
Unique aggregates announced from the RIPE address blocks: 52138
RIPE Region origin ASes present in the Internet Routing Table: 15689
RIPE Prefixes per ASN: 5.03
RIPE Region origin ASes announcing only one prefix: 7841
RIPE Region transit ASes present in the Internet Routing Table: 2469
Average RIPE Region AS path length visible: 4.6
Max RIPE Region AS path length visible: 36
Number of RIPE region 32-bit ASNs visible in the Routing Table: 840
Number of RIPE addresses announced to Internet: 476731904
Equivalent to 28 /8s, 106 /16s and 90 /24s
Percentage of available RIPE address space announced: 76.8
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: 33025
Total LACNIC prefixes after maximum aggregation: 7491
LACNIC Deaggregation factor: 4.41
Prefixes being announced from the LACNIC address blocks: 32139
Unique aggregates announced from the LACNIC address blocks: 16953
LACNIC Region origin ASes present in the Internet Routing Table: 1462
LACNIC Prefixes per ASN: 21.98
LACNIC Region origin ASes announcing only one prefix: 435
LACNIC Region transit ASes present in the Internet Routing Table: 261
Average LACNIC Region AS path length visible: 4.4
Max LACNIC Region AS path length visible: 29
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 234
Number of LACNIC addresses announced to Internet: 84815104
Equivalent to 5 /8s, 14 /16s and 45 /24s
Percentage of available LACNIC address space announced: 56.2
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: 8050
Total AfriNIC prefixes after maximum aggregation: 1916
AfriNIC Deaggregation factor: 4.20
Prefixes being announced from the AfriNIC address blocks: 6366
Unique aggregates announced from the AfriNIC address blocks: 1880
AfriNIC Region origin ASes present in the Internet Routing Table: 459
AfriNIC Prefixes per ASN: 13.87
AfriNIC Region origin ASes announcing only one prefix: 141
AfriNIC Region transit ASes present in the Internet Routing Table: 101
Average AfriNIC Region AS path length visible: 4.8
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: 24146944
Equivalent to 1 /8s, 112 /16s and 116 /24s
Percentage of available AfriNIC address space announced: 36.0
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 2462 9500 924 Korea Telecom (KIX)
17974 1555 441 38 PT TELEKOMUNIKASI INDONESIA
7545 1538 301 86 TPG Internet Pty Ltd
4755 1473 634 167 TATA Communications formerly
24560 1155 337 187 Bharti Airtel Ltd., Telemedia
7552 1146 1064 7 Vietel Corporation
9583 1057 76 506 Sify Limited
4808 1052 2098 299 CNCGROUP IP network: China169
9829 1039 877 62 BSNL National Internet Backbo
17488 938 191 103 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 3636 3822 255 bellsouth.net, inc.
4323 1967 1081 401 Time Warner Telecom
18566 1876 355 270 Covad Communications
1785 1791 681 122 PaeTec Communications, Inc.
6478 1720 318 44 AT&T Worldnet Services
20115 1539 1541 633 Charter Communications
19262 1493 4936 308 Verizon Global Networks
7018 1362 7068 889 AT&T WorldNet Services
22773 1340 2897 88 Cox Communications, Inc.
2386 1269 536 913 AT&T Data Communications Serv
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
34984 519 106 180 BILISIM TELEKOM
6830 513 1780 320 UPC Distribution Services
3292 464 2078 399 TDC Tele Danmark
20940 462 135 354 Akamai Technologies European
29049 451 33 48 AzerSat LLC.
8866 445 134 26 Bulgarian Telecommunication C
12479 437 593 7 Uni2 Autonomous System
3320 426 8152 371 Deutsche Telekom AG
8551 406 355 45 Bezeq International
702 396 1803 310 UUNET - Commercial IP service
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 1513 278 157 TVCABLE BOGOTA
28573 1326 992 79 NET Servicos de Comunicao S.A
8151 1266 2726 363 UniNet S.A. de C.V.
7303 961 505 153 Telecom Argentina Stet-France
6503 740 354 73 AVANTEL, S.A.
14420 677 54 80 CORPORACION NACIONAL DE TELEC
22047 564 310 15 VTR PUNTO NET S.A.
3816 529 231 94 Empresa Nacional de Telecomun
7738 516 986 31 Telecomunicacoes da Bahia S.A
13489 516 262 124 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 797 445 11 TEDATA
24863 795 147 37 LINKdotNET AS number
15475 525 74 8 Nile Online
36992 307 415 17 Etisalat MISR
3741 264 937 225 The Internet Solution
6713 241 215 13 Itissalat Al-MAGHRIB
33776 218 12 11 Starcomms Nigeria Limited
24835 210 78 10 RAYA Telecom - Egypt
29571 192 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 3636 3822 255 bellsouth.net, inc.
23456 2632 649 1429 32-bit ASN transition
4766 2462 9500 924 Korea Telecom (KIX)
4323 1967 1081 401 Time Warner Telecom
18566 1876 355 270 Covad Communications
1785 1791 681 122 PaeTec Communications, Inc.
6478 1720 318 44 AT&T Worldnet Services
17974 1555 441 38 PT TELEKOMUNIKASI INDONESIA
20115 1539 1541 633 Charter Communications
7545 1538 301 86 TPG Internet Pty Ltd
Complete listing at http://thyme.rand.apnic.net/current/data-ASnet
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
6478 1720 1676 AT&T Worldnet Services
1785 1791 1669 PaeTec Communications, Inc.
18566 1876 1606 Covad Communications
4323 1967 1566 Time Warner Telecom
4766 2462 1538 Korea Telecom (KIX)
17974 1555 1517 PT TELEKOMUNIKASI INDONESIA
7545 1538 1452 TPG Internet Pty Ltd
10620 1513 1356 TVCABLE BOGOTA
4755 1473 1306 TATA Communications formerly
22773 1340 1252 Cox Communications, Inc.
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
27.0.128.0/17 7514 Media Exchange, Inc.
31.131.160.0/21 56897 >>UNKNOWN<<
41.190.32.0/23 31856 CABSAS
41.190.34.0/23 31856 CABSAS
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 /8:22 /9:12 /10:28 /11:80 /12:230
/13:463 /14:800 /15:1394 /16:11939 /17:5846 /18:9779
/19:19369 /20:25850 /21:26021 /22:34186 /23:33214 /24:186867
/25:1078 /26:1262 /27:711 /28:42 /29:8 /30:2
/31:0 /32:6
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2239 3636 bellsouth.net, inc.
18566 1839 1876 Covad Communications
6478 1674 1720 AT&T Worldnet Services
10620 1403 1513 TVCABLE BOGOTA
23456 1298 2632 32-bit ASN transition
11492 1104 1150 Cable One
7011 1056 1155 Citizens Utilities
1785 1050 1791 PaeTec Communications, Inc.
7029 907 1157 Alltel Information Services,
4323 880 1967 Time Warner Telecom
Complete listing at http://thyme.rand.apnic.net/current/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:282 2:48 4:16 5:1 6:3 8:337
12:1977 13:1 14:461 15:13 16:3 17:8
20:10 23:11 24:1611 27:771 31:427 32:60
33:4 34:2 37:1 38:738 40:103 41:2525
42:6 44:3 46:964 47:3 49:195 50:403
52:13 54:2 55:5 56:2 57:29 58:841
59:475 60:387 61:1121 62:1054 63:1935 64:3936
65:2256 66:4140 67:1868 68:1089 69:2997 70:706
71:373 72:1847 74:2356 75:309 76:337 77:882
78:704 79:456 80:1127 81:834 82:490 83:457
84:667 85:1077 86:581 87:749 88:331 89:1530
90:205 91:3828 92:526 93:1033 94:1287 95:822
96:443 97:251 98:869 99:36 101:64 103:57
106:1 107:11 108:83 109:968 110:602 111:710
112:302 113:401 114:537 115:687 116:960 117:673
118:794 119:1142 120:313 121:669 122:1626 123:948
124:1270 125:1217 128:261 129:175 130:164 131:577
132:110 133:19 134:213 135:48 136:214 137:144
138:300 139:111 140:479 141:238 142:404 143:419
144:494 145:54 146:445 147:214 148:607 149:247
150:175 151:187 152:330 153:180 154:3 155:399
156:198 157:352 158:138 159:380 160:318 161:209
162:310 163:165 164:500 165:352 166:529 167:425
168:730 169:155 170:804 171:77 172:1 173:1599
174:586 175:371 176:133 177:149 178:1003 180:856
181:18 182:466 183:214 184:293 185:1 186:1204
187:782 188:846 189:900 190:4890 192:5847 193:4915
194:3497 195:2996 196:1229 197:19 198:3574 199:3920
200:5514 201:1481 202:8308 203:8345 204:4186 205:2339
206:2684 207:2840 208:3946 209:3469 210:2722 211:1401
212:2006 213:1723 214:745 215:69 216:4931 217:1633
218:548 219:359 220:1207 221:491 222:317 223:156
End of report
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