Routing Table Report 04:00 +10GMT Fri 13 May, 2011
Report Website: http://thyme.rand.apnic.net
Detailed Analysis: http://thyme.rand.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 356595
Prefixes after maximum aggregation: 161541
Deaggregation factor: 2.21
Unique aggregates announced to Internet: 175941
Total ASes present in the Internet Routing Table: 37544
Prefixes per ASN: 9.50
Origin-only ASes present in the Internet Routing Table: 31388
Origin ASes announcing only one prefix: 15093
Transit ASes present in the Internet Routing Table: 5089
Transit-only ASes present in the Internet Routing Table: 135
Average AS path length visible in the Internet Routing Table: 4.4
Max AS path length visible: 36
Max AS path prepend of ASN (48687) 24
Prefixes from unregistered ASNs in the Routing Table: 617
Unregistered ASNs in the Routing Table: 316
Number of 32-bit ASNs allocated by the RIRs: 1344
Number of 32-bit ASNs visible in the Routing Table: 1067
Prefixes from 32-bit ASNs in the Routing Table: 2403
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 151
Number of addresses announced to Internet: 2425705664
Equivalent to 144 /8s, 149 /16s and 84 /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: 148091
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 89299
Total APNIC prefixes after maximum aggregation: 29923
APNIC Deaggregation factor: 2.98
Prefixes being announced from the APNIC address blocks: 85651
Unique aggregates announced from the APNIC address blocks: 36534
APNIC Region origin ASes present in the Internet Routing Table: 4440
APNIC Prefixes per ASN: 19.29
APNIC Region origin ASes announcing only one prefix: 1236
APNIC Region transit ASes present in the Internet Routing Table: 708
Average APNIC Region AS path length visible: 4.6
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: 614313248
Equivalent to 36 /8s, 157 /16s and 173 /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: 140064
Total ARIN prefixes after maximum aggregation: 71452
ARIN Deaggregation factor: 1.96
Prefixes being announced from the ARIN address blocks: 112303
Unique aggregates announced from the ARIN address blocks: 45427
ARIN Region origin ASes present in the Internet Routing Table: 14374
ARIN Prefixes per ASN: 7.81
ARIN Region origin ASes announcing only one prefix: 5494
ARIN Region transit ASes present in the Internet Routing Table: 1497
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: 799937024
Equivalent to 47 /8s, 174 /16s and 18 /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: 84167
Total RIPE prefixes after maximum aggregation: 48107
RIPE Deaggregation factor: 1.75
Prefixes being announced from the RIPE address blocks: 77658
Unique aggregates announced from the RIPE address blocks: 51232
RIPE Region origin ASes present in the Internet Routing Table: 15579
RIPE Prefixes per ASN: 4.98
RIPE Region origin ASes announcing only one prefix: 7798
RIPE Region transit ASes present in the Internet Routing Table: 2456
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: 789
Number of RIPE addresses announced to Internet: 468720896
Equivalent to 27 /8s, 240 /16s and 29 /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: 32672
Total LACNIC prefixes after maximum aggregation: 7490
LACNIC Deaggregation factor: 4.36
Prefixes being announced from the LACNIC address blocks: 31700
Unique aggregates announced from the LACNIC address blocks: 16676
LACNIC Region origin ASes present in the Internet Routing Table: 1450
LACNIC Prefixes per ASN: 21.86
LACNIC Region origin ASes announcing only one prefix: 429
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: 214
Number of LACNIC addresses announced to Internet: 83300352
Equivalent to 4 /8s, 247 /16s and 16 /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: 7774
Total AfriNIC prefixes after maximum aggregation: 1855
AfriNIC Deaggregation factor: 4.19
Prefixes being announced from the AfriNIC address blocks: 6129
Unique aggregates announced from the AfriNIC address blocks: 1930
AfriNIC Region origin ASes present in the Internet Routing Table: 448
AfriNIC Prefixes per ASN: 13.68
AfriNIC Region origin ASes announcing only one prefix: 136
AfriNIC Region transit ASes present in the Internet Routing Table: 98
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: 23090688
Equivalent to 1 /8s, 96 /16s and 86 /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 2452 9493 916 Korea Telecom (KIX)
17974 1825 516 32 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 1106 1064 7 Vietel Corporation
9583 1079 80 510 Sify Limited
4808 1040 2090 297 CNCGROUP IP network: China169
9829 1034 872 54 BSNL National Internet Backbo
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 3644 3822 255 bellsouth.net, inc.
4323 1986 1088 398 Time Warner Telecom
18566 1822 357 232 Covad Communications
1785 1774 681 124 PaeTec Communications, Inc.
6478 1677 313 49 AT&T Worldnet Services
20115 1532 1538 629 Charter Communications
19262 1479 4901 324 Verizon Global Networks
7018 1358 6927 887 AT&T WorldNet Services
22773 1329 2897 87 Cox Communications, Inc.
11492 1278 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 459 1998 392 TDC Tele Danmark
20940 447 131 342 Akamai Technologies European
8866 442 134 26 Bulgarian Telecommunication C
29049 442 32 44 AzerSat LLC.
12479 426 577 6 Uni2 Autonomous System
3320 420 7608 367 Deutsche Telekom AG
8551 405 355 45 Bezeq International
8402 402 320 11 Corbina telecom
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 1372 2702 361 UniNet S.A. de C.V.
28573 1310 990 86 NET Servicos de Comunicao S.A
7303 931 470 150 Telecom Argentina Stet-France
6503 732 354 73 AVANTEL, S.A.
14420 667 54 91 CORPORACION NACIONAL DE TELEC
22047 555 310 15 VTR PUNTO NET S.A.
3816 520 226 99 Empresa Nacional de Telecomun
13489 496 239 117 Orbitel S.A. E.S.P.
11172 495 84 83 Servicios Alestra S.A de C.V
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 891 445 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 205 78 10 RAYA Telecom - Egypt
33776 200 12 11 Starcomms Nigeria Limited
29571 162 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 3644 3822 255 bellsouth.net, inc.
4766 2452 9493 916 Korea Telecom (KIX)
23456 2403 680 1310 32-bit ASN transition
4323 1986 1088 398 Time Warner Telecom
17974 1825 516 32 PT TELEKOMUNIKASI INDONESIA
18566 1822 357 232 Covad Communications
1785 1774 681 124 PaeTec Communications, Inc.
6478 1677 313 49 AT&T Worldnet Services
7545 1546 301 86 TPG Internet Pty Ltd
20115 1532 1538 629 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
17974 1825 1793 PT TELEKOMUNIKASI INDONESIA
1785 1774 1650 PaeTec Communications, Inc.
6478 1677 1628 AT&T Worldnet Services
18566 1822 1590 Covad Communications
4323 1986 1588 Time Warner Telecom
4766 2452 1536 Korea Telecom (KIX)
7545 1546 1460 TPG Internet Pty Ltd
10620 1467 1312 TVCABLE BOGOTA
4755 1461 1294 TATA Communications formerly
11492 1278 1263 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
31.220.136.0/21 31078 Netsign GmbH
41.222.79.0/24 36938 >>UNKNOWN<<
41.223.92.0/22 36936 >>UNKNOWN<<
45.127.0.0/16 13767 NetworkTwo Communications Gro
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 /14:791 /15:1392 /16:11725 /17:5761 /18:9707
/19:19295 /20:25544 /21:25806 /22:34065 /23:32865 /24:185575
/25:1089 /26:1272 /27:710 /28:162 /29:8 /30:2
/31:0 /32:6
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2245 3644 bellsouth.net, inc.
18566 1784 1822 Covad Communications
6478 1631 1677 AT&T Worldnet Services
10620 1357 1467 TVCABLE BOGOTA
11492 1224 1278 Cable One
23456 1178 2403 32-bit ASN transition
7011 1062 1162 Citizens Utilities
1785 1050 1774 PaeTec Communications, Inc.
4323 888 1986 Time Warner Telecom
22773 846 1329 Cox Communications, Inc.
Complete listing at http://thyme.rand.apnic.net/current/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:264 2:56 4:14 5:1 6:3 8:353
12:1985 13:1 14:451 15:15 16:3 17:8
20:10 23:7 24:1640 27:743 31:324 32:60
33:3 34:2 37:1 38:763 40:101 41:2477
42:5 44:3 46:902 47:4 49:177 50:400
52:13 55:6 56:2 57:30 58:851 59:484
60:387 61:1250 62:978 63:1922 64:3927 65:2299
66:4138 67:1871 68:1089 69:2977 70:701 71:349
72:1883 73:1 74:2339 75:308 76:341 77:869
78:689 79:462 80:1096 81:817 82:492 83:449
84:626 85:1071 86:598 87:750 88:327 89:1578
90:200 91:3727 92:511 93:1053 94:1249 95:815
96:482 97:246 98:842 99:35 101:59 103:12
106:1 107:6 108:85 109:942 110:584 111:710
112:319 113:399 114:533 115:663 116:951 117:683
118:818 119:1139 120:309 121:678 122:1620 123:1079
124:1252 125:1223 128:259 129:167 130:165 131:569
132:110 133:19 134:210 135:49 136:214 137:143
138:304 139:113 140:480 141:240 142:401 143:400
144:489 145:53 146:440 147:209 148:594 149:243
150:171 151:187 152:310 153:179 154:3 155:395
156:194 157:352 158:131 159:387 160:317 161:207
162:279 163:163 164:499 165:350 166:514 167:431
168:725 169:153 170:794 171:76 172:1 173:1558
174:544 175:370 177:120 178:906 180:835 181:20
182:437 183:203 184:260 185:1 186:1160 187:743
188:826 189:903 190:4800 192:5795 193:4847 194:3478
195:2971 196:1205 197:17 198:3569 199:3893 200:5528
201:1500 202:8356 203:8434 204:4141 205:2323 206:2725
207:2911 208:3966 209:3421 210:2725 211:1382 212:1972
213:1726 214:725 215:70 216:4813 217:1629 218:564
219:371 220:1202 221:483 222:342 223:145
End of report
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