Routing Table Report 04:00 +10GMT Mon 11 Apr, 2011
Report Website: http://thyme.rand.apnic.net
Detailed Analysis: http://thyme.rand.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 352555
Prefixes after maximum aggregation: 160127
Deaggregation factor: 2.20
Unique aggregates announced to Internet: 174715
Total ASes present in the Internet Routing Table: 37226
Prefixes per ASN: 9.47
Origin-only ASes present in the Internet Routing Table: 31240
Origin ASes announcing only one prefix: 15029
Transit ASes present in the Internet Routing Table: 5011
Transit-only ASes present in the Internet Routing Table: 130
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: 560
Unregistered ASNs in the Routing Table: 248
Number of 32-bit ASNs allocated by the RIRs: 1281
Number of 32-bit ASNs visible in the Routing Table: 975
Prefixes from 32-bit ASNs in the Routing Table: 2175
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 176
Number of addresses announced to Internet: 2405365056
Equivalent to 143 /8s, 94 /16s and 245 /24s
Percentage of available address space announced: 64.9
Percentage of allocated address space announced: 64.9
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 90.3
Total number of prefixes smaller than registry allocations: 145910
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 87866
Total APNIC prefixes after maximum aggregation: 29880
APNIC Deaggregation factor: 2.94
Prefixes being announced from the APNIC address blocks: 84835
Unique aggregates announced from the APNIC address blocks: 36877
APNIC Region origin ASes present in the Internet Routing Table: 4395
APNIC Prefixes per ASN: 19.30
APNIC Region origin ASes announcing only one prefix: 1224
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: 20
Number of APNIC region 32-bit ASNs visible in the Routing Table: 47
Number of APNIC addresses announced to Internet: 605848864
Equivalent to 36 /8s, 28 /16s and 133 /24s
Percentage of available APNIC address space announced: 76.8
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: 138827
Total ARIN prefixes after maximum aggregation: 70908
ARIN Deaggregation factor: 1.96
Prefixes being announced from the ARIN address blocks: 111489
Unique aggregates announced from the ARIN address blocks: 45132
ARIN Region origin ASes present in the Internet Routing Table: 14299
ARIN Prefixes per ASN: 7.80
ARIN Region origin ASes announcing only one prefix: 5457
ARIN Region transit ASes present in the Internet Routing Table: 1489
Average ARIN Region AS path length visible: 3.9
Max ARIN Region AS path length visible: 23
Number of ARIN region 32-bit ASNs visible in the Routing Table: 11
Number of ARIN addresses announced to Internet: 797867008
Equivalent to 47 /8s, 142 /16s and 124 /24s
Percentage of available ARIN address space announced: 63.4
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: 83459
Total RIPE prefixes after maximum aggregation: 47622
RIPE Deaggregation factor: 1.75
Prefixes being announced from the RIPE address blocks: 76724
Unique aggregates announced from the RIPE address blocks: 50582
RIPE Region origin ASes present in the Internet Routing Table: 15495
RIPE Prefixes per ASN: 4.95
RIPE Region origin ASes announcing only one prefix: 7790
RIPE Region transit ASes present in the Internet Routing Table: 2413
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: 719
Number of RIPE addresses announced to Internet: 464021248
Equivalent to 27 /8s, 168 /16s and 103 /24s
Percentage of available RIPE address space announced: 74.8
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: 32304
Total LACNIC prefixes after maximum aggregation: 7435
LACNIC Deaggregation factor: 4.34
Prefixes being announced from the LACNIC address blocks: 31295
Unique aggregates announced from the LACNIC address blocks: 16326
LACNIC Region origin ASes present in the Internet Routing Table: 1433
LACNIC Prefixes per ASN: 21.84
LACNIC Region origin ASes announcing only one prefix: 427
LACNIC Region transit ASes present in the Internet Routing Table: 260
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: 193
Number of LACNIC addresses announced to Internet: 81781376
Equivalent to 4 /8s, 223 /16s and 226 /24s
Percentage of available LACNIC address space announced: 54.2
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: 7650
Total AfriNIC prefixes after maximum aggregation: 1832
AfriNIC Deaggregation factor: 4.18
Prefixes being announced from the AfriNIC address blocks: 6002
Unique aggregates announced from the AfriNIC address blocks: 1864
AfriNIC Region origin ASes present in the Internet Routing Table: 443
AfriNIC Prefixes per ASN: 13.55
AfriNIC Region origin ASes announcing only one prefix: 131
AfriNIC Region transit ASes present in the Internet Routing Table: 97
Average AfriNIC Region AS path length visible: 4.6
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: 22721280
Equivalent to 1 /8s, 90 /16s and 179 /24s
Percentage of available AfriNIC address space announced: 33.9
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 2440 9515 909 Korea Telecom (KIX)
7545 1544 301 84 TPG Internet Pty Ltd
17974 1450 480 33 PT TELEKOMUNIKASI INDONESIA
4755 1443 634 168 TATA Communications formerly
24560 1137 322 203 Bharti Airtel Ltd., Telemedia
4808 1063 2140 293 CNCGROUP IP network: China169
9583 1055 77 494 Sify Limited
9829 1006 869 51 BSNL National Internet Backbo
17488 942 162 98 Hathway IP Over Cable Interne
18101 935 116 140 Reliance Infocom Ltd Internet
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 3666 3822 255 bellsouth.net, inc.
4323 2541 1090 396 Time Warner Telecom
1785 1791 681 131 PaeTec Communications, Inc.
18566 1642 335 197 Covad Communications
6478 1612 306 37 AT&T Worldnet Services
20115 1536 1551 641 Charter Communications
19262 1494 4949 297 Verizon Global Networks
7018 1351 6800 878 AT&T WorldNet Services
22773 1294 2865 84 Cox Communications, Inc.
2386 1271 536 914 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
6830 515 1780 319 UPC Distribution Services
34984 495 97 188 BILISIM TELEKOM
29049 468 34 34 AzerSat LLC.
3292 455 2013 392 TDC Tele Danmark
8866 446 134 26 Bulgarian Telecommunication C
20940 441 127 338 Akamai Technologies European
3320 419 7607 365 Deutsche Telekom AG
8551 403 353 46 Bezeq International
12479 403 577 6 Uni2 Autonomous System
8402 395 320 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 1418 263 155 TVCABLE BOGOTA
28573 1271 972 86 NET Servicos de Comunicao S.A
8151 1242 2681 368 UniNet S.A. de C.V.
6503 959 354 72 AVANTEL, S.A.
7303 923 465 148 Telecom Argentina Stet-France
14420 645 52 89 CORPORACION NACIONAL DE TELEC
22047 567 310 15 VTR PUNTO NET S.A.
3816 516 225 98 Empresa Nacional de Telecomun
11172 487 99 81 Servicios Alestra S.A de C.V
27947 481 53 54 Telconet S.A
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 837 445 11 TEDATA
24863 776 147 39 LINKdotNET AS number
15475 420 90 8 Nile Online
36992 294 287 12 Etisalat MISR
3741 266 985 227 The Internet Solution
6713 231 215 12 Itissalat Al-MAGHRIB
24835 230 78 10 RAYA Telecom - Egypt
33776 212 12 8 Starcomms Nigeria Limited
29571 191 17 11 Ci Telecom Autonomous system
16637 142 441 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 3666 3822 255 bellsouth.net, inc.
4323 2541 1090 396 Time Warner Telecom
4766 2440 9515 909 Korea Telecom (KIX)
23456 2175 634 1175 32-bit ASN transition
1785 1791 681 131 PaeTec Communications, Inc.
18566 1642 335 197 Covad Communications
6478 1612 306 37 AT&T Worldnet Services
7545 1544 301 84 TPG Internet Pty Ltd
20115 1536 1551 641 Charter Communications
19262 1494 4949 297 Verizon Global Networks
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 2541 2145 Time Warner Telecom
1785 1791 1660 PaeTec Communications, Inc.
6478 1612 1575 AT&T Worldnet Services
4766 2440 1531 Korea Telecom (KIX)
7545 1544 1460 TPG Internet Pty Ltd
18566 1642 1445 Covad Communications
17974 1450 1417 PT TELEKOMUNIKASI INDONESIA
4755 1443 1275 TATA Communications formerly
10620 1418 1263 TVCABLE BOGOTA
11492 1267 1252 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
13746 UNALLOCATED 12.24.56.0/24 7018 AT&T WorldNet Servic
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
Complete listing at http://thyme.rand.apnic.net/current/data-badAS
Advertised Unallocated Addresses
--------------------------------
Network Origin AS Description
1.3.0.0/16 38639 NTT Communications Corporatio
2.56.0.0/16 44559 E-Rent LLC
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
41.57.192.0/18 22750 BCSNET
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 /8:19 /9:12 /10:26 /11:74 /12:219
/13:452 /14:771 /15:1373 /16:11584 /17:5732 /18:9454
/19:19124 /20:25023 /21:25448 /22:33594 /23:32227 /24:184258
/25:1129 /26:1279 /27:702 /28:39 /29:8 /30:2
/31:0 /32:6
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2263 3666 bellsouth.net, inc.
18566 1620 1642 Covad Communications
6478 1566 1612 AT&T Worldnet Services
4323 1362 2541 Time Warner Telecom
10620 1308 1418 TVCABLE BOGOTA
11492 1216 1267 Cable One
23456 1124 2175 32-bit ASN transition
7011 1061 1161 Citizens Utilities
1785 1057 1791 PaeTec Communications, Inc.
22773 838 1294 Cox Communications, Inc.
Complete listing at http://thyme.rand.apnic.net/current/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:301 2:56 4:14 5:1 8:349 12:2002
13:1 14:434 15:15 16:3 17:8 20:9
23:5 24:1601 27:712 31:215 32:60 33:3
34:2 37:1 38:751 39:1 40:100 41:2350
42:1 44:3 46:812 47:4 49:170 50:220
52:13 55:3 56:2 57:28 58:843 59:488
60:406 61:1164 62:1001 63:1921 64:3894 65:2335
66:4310 67:1800 68:1080 69:2945 70:697 71:344
72:1899 73:1 74:2323 75:284 76:336 77:852
78:686 79:457 80:1086 81:825 82:512 83:458
84:648 85:1041 86:566 87:764 88:340 89:1588
90:178 91:3682 92:503 93:1058 94:1256 95:778
96:448 97:252 98:818 99:35 101:61 106:2
107:4 108:78 109:945 110:533 111:683 112:324
113:384 114:515 115:705 116:932 117:674 118:773
119:1134 120:289 121:714 122:1624 123:1073 124:1284
125:1258 128:265 129:167 130:173 131:565 132:102
133:20 134:216 135:49 136:210 137:127 138:301
139:103 140:395 141:174 142:376 143:389 144:478
145:53 146:442 147:204 148:588 149:263 150:168
151:187 152:301 153:180 154:3 155:393 156:189
157:354 158:132 159:380 160:317 161:243 162:277
163:164 164:489 165:341 166:509 167:418 168:720
169:152 170:778 171:74 172:1 173:1255 174:537
175:353 177:78 178:834 180:805 181:7 182:417
183:200 184:240 185:1 186:1124 187:829 188:937
189:1018 190:4830 192:5753 193:4811 194:3470 195:2952
196:1212 197:17 198:3576 199:3900 200:5547 201:1475
202:8353 203:8472 204:4127 205:2325 206:2650 207:3020
208:3924 209:3504 210:2726 211:1363 212:1978 213:1716
214:727 215:66 216:4869 217:1644 218:556 219:386
220:1192 221:480 222:312 223:119
End of report
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