Routing Table Report 04:00 +10GMT Tue 26 Apr, 2011
Report Website: http://thyme.rand.apnic.net
Detailed Analysis: http://thyme.rand.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 355768
Prefixes after maximum aggregation: 160880
Deaggregation factor: 2.21
Unique aggregates announced to Internet: 175550
Total ASes present in the Internet Routing Table: 37394
Prefixes per ASN: 9.51
Origin-only ASes present in the Internet Routing Table: 31343
Origin ASes announcing only one prefix: 15079
Transit ASes present in the Internet Routing Table: 5038
Transit-only ASes present in the Internet Routing Table: 133
Average AS path length visible in the Internet Routing Table: 4.4
Max AS path length visible: 36
Max AS path prepend of ASN (36992) 29
Prefixes from unregistered ASNs in the Routing Table: 568
Unregistered ASNs in the Routing Table: 279
Number of 32-bit ASNs allocated by the RIRs: 1311
Number of 32-bit ASNs visible in the Routing Table: 1013
Prefixes from 32-bit ASNs in the Routing Table: 2304
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 148
Number of addresses announced to Internet: 2418615360
Equivalent to 144 /8s, 41 /16s and 36 /24s
Percentage of available address space announced: 65.3
Percentage of allocated address space announced: 65.3
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 90.5
Total number of prefixes smaller than registry allocations: 147741
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 88943
Total APNIC prefixes after maximum aggregation: 29921
APNIC Deaggregation factor: 2.97
Prefixes being announced from the APNIC address blocks: 85422
Unique aggregates announced from the APNIC address blocks: 36887
APNIC Region origin ASes present in the Internet Routing Table: 4419
APNIC Prefixes per ASN: 19.33
APNIC Region origin ASes announcing only one prefix: 1226
APNIC Region transit ASes present in the Internet Routing Table: 700
Average APNIC Region AS path length visible: 4.6
Max APNIC Region AS path length visible: 22
Number of APNIC region 32-bit ASNs visible in the Routing Table: 48
Number of APNIC addresses announced to Internet: 610746400
Equivalent to 36 /8s, 103 /16s and 64 /24s
Percentage of available APNIC address space announced: 77.5
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: 140085
Total ARIN prefixes after maximum aggregation: 71225
ARIN Deaggregation factor: 1.97
Prefixes being announced from the ARIN address blocks: 112465
Unique aggregates announced from the ARIN address blocks: 45226
ARIN Region origin ASes present in the Internet Routing Table: 14340
ARIN Prefixes per ASN: 7.84
ARIN Region origin ASes announcing only one prefix: 5472
ARIN Region transit ASes present in the Internet Routing Table: 1490
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: 798920704
Equivalent to 47 /8s, 158 /16s and 144 /24s
Percentage of available ARIN address space announced: 63.5
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: 83965
Total RIPE prefixes after maximum aggregation: 47880
RIPE Deaggregation factor: 1.75
Prefixes being announced from the RIPE address blocks: 77134
Unique aggregates announced from the RIPE address blocks: 51038
RIPE Region origin ASes present in the Internet Routing Table: 15550
RIPE Prefixes per ASN: 4.96
RIPE Region origin ASes announcing only one prefix: 7817
RIPE Region transit ASes present in the Internet Routing Table: 2429
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: 749
Number of RIPE addresses announced to Internet: 466886656
Equivalent to 27 /8s, 212 /16s and 32 /24s
Percentage of available RIPE address space announced: 75.2
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: 32510
Total LACNIC prefixes after maximum aggregation: 7436
LACNIC Deaggregation factor: 4.37
Prefixes being announced from the LACNIC address blocks: 31527
Unique aggregates announced from the LACNIC address blocks: 16474
LACNIC Region origin ASes present in the Internet Routing Table: 1440
LACNIC Prefixes per ASN: 21.89
LACNIC Region origin ASes announcing only one prefix: 431
LACNIC Region transit ASes present in the Internet Routing Table: 259
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: 200
Number of LACNIC addresses announced to Internet: 82648704
Equivalent to 4 /8s, 237 /16s and 30 /24s
Percentage of available LACNIC address space announced: 54.7
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: 7736
Total AfriNIC prefixes after maximum aggregation: 1843
AfriNIC Deaggregation factor: 4.20
Prefixes being announced from the AfriNIC address blocks: 6114
Unique aggregates announced from the AfriNIC address blocks: 1893
AfriNIC Region origin ASes present in the Internet Routing Table: 446
AfriNIC Prefixes per ASN: 13.71
AfriNIC Region origin ASes announcing only one prefix: 133
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: 31
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 5
Number of AfriNIC addresses announced to Internet: 23372288
Equivalent to 1 /8s, 100 /16s and 162 /24s
Percentage of available AfriNIC address space announced: 34.8
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 2430 9482 904 Korea Telecom (KIX)
17974 1820 515 29 PT TELEKOMUNIKASI INDONESIA
7545 1549 300 81 TPG Internet Pty Ltd
4755 1455 634 167 TATA Communications formerly
7552 1194 1064 7 Vietel Corporation
24560 1151 324 186 Bharti Airtel Ltd., Telemedia
9583 1054 77 495 Sify Limited
4808 1030 2089 293 CNCGROUP IP network: China169
9829 1008 870 50 BSNL National Internet Backbo
17488 942 164 98 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 3647 3822 254 bellsouth.net, inc.
4323 2647 1089 399 Time Warner Telecom
1785 1789 681 128 PaeTec Communications, Inc.
18566 1760 349 229 Covad Communications
6478 1641 309 46 AT&T Worldnet Services
20115 1535 1552 638 Charter Communications
19262 1494 4949 297 Verizon Global Networks
7018 1355 6801 887 AT&T WorldNet Services
22773 1299 2865 84 Cox Communications, Inc.
2386 1270 536 912 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 519 1780 321 UPC Distribution Services
34984 509 106 182 BILISIM TELEKOM
3292 455 1997 391 TDC Tele Danmark
29049 450 33 48 AzerSat LLC.
8866 446 134 26 Bulgarian Telecommunication C
20940 439 129 335 Akamai Technologies European
3320 423 7609 368 Deutsche Telekom AG
12479 408 577 6 Uni2 Autonomous System
8551 405 354 47 Bezeq International
702 396 1802 309 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 1438 268 160 TVCABLE BOGOTA
28573 1279 988 87 NET Servicos de Comunicao S.A
8151 1247 2688 369 UniNet S.A. de C.V.
7303 928 467 148 Telecom Argentina Stet-France
6503 907 354 72 AVANTEL, S.A.
14420 663 53 91 CORPORACION NACIONAL DE TELEC
22047 565 310 15 VTR PUNTO NET S.A.
3816 517 225 98 Empresa Nacional de Telecomun
11172 488 99 82 Servicios Alestra S.A de C.V
13489 480 223 104 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 869 445 11 TEDATA
24863 778 147 39 LINKdotNET AS number
15475 422 90 8 Nile Online
36992 297 415 13 Etisalat MISR
3741 267 985 227 The Internet Solution
6713 238 215 13 Itissalat Al-MAGHRIB
33776 227 13 5 Starcomms Nigeria Limited
24835 214 78 10 RAYA Telecom - Egypt
29571 161 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 3647 3822 254 bellsouth.net, inc.
4323 2647 1089 399 Time Warner Telecom
4766 2430 9482 904 Korea Telecom (KIX)
23456 2304 654 1239 32-bit ASN transition
17974 1820 515 29 PT TELEKOMUNIKASI INDONESIA
1785 1789 681 128 PaeTec Communications, Inc.
18566 1760 349 229 Covad Communications
6478 1641 309 46 AT&T Worldnet Services
7545 1549 300 81 TPG Internet Pty Ltd
20115 1535 1552 638 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 2647 2248 Time Warner Telecom
17974 1820 1791 PT TELEKOMUNIKASI INDONESIA
1785 1789 1661 PaeTec Communications, Inc.
6478 1641 1595 AT&T Worldnet Services
18566 1760 1531 Covad Communications
4766 2430 1526 Korea Telecom (KIX)
7545 1549 1468 TPG Internet Pty Ltd
4755 1455 1288 TATA Communications formerly
10620 1438 1278 TVCABLE BOGOTA
11492 1258 1243 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
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
41.222.79.0/24 36938 >>UNKNOWN<<
41.223.92.0/22 36936 >>UNKNOWN<<
45.127.0.0/16 13767 NetworkTwo Communications Gro
62.61.220.0/24 24974 Tachyon Europe BV - Wireless
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 /11:77 /12:221
/13:458 /14:788 /15:1379 /16:11670 /17:5741 /18:9632
/19:19174 /20:25616 /21:25632 /22:33816 /23:32642 /24:185714
/25:1112 /26:1282 /27:699 /28:39 /29:8 /30:2
/31:0 /32:6
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2249 3647 bellsouth.net, inc.
18566 1728 1760 Covad Communications
6478 1595 1641 AT&T Worldnet Services
4323 1344 2647 Time Warner Telecom
10620 1328 1438 TVCABLE BOGOTA
11492 1207 1258 Cable One
23456 1170 2304 32-bit ASN transition
7011 1062 1161 Citizens Utilities
1785 1059 1789 PaeTec Communications, Inc.
22773 843 1299 Cox Communications, Inc.
Complete listing at http://thyme.rand.apnic.net/current/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:262 2:45 4:14 5:1 6:3 8:349
12:2011 13:1 14:441 15:15 16:3 17:8
20:9 23:5 24:1606 27:726 31:220 32:60
33:3 34:2 37:1 38:765 40:101 41:2430
42:3 44:3 46:868 47:4 49:177 50:366
52:13 55:2 56:2 57:31 58:845 59:479
60:388 61:1267 62:982 63:1921 64:3936 65:2323
66:4355 67:1856 68:1081 69:2976 70:700 71:345
72:1909 73:1 74:2355 75:297 76:336 77:842
78:675 79:452 80:1098 81:830 82:493 83:461
84:649 85:1078 86:565 87:746 88:331 89:1578
90:183 91:3703 92:509 93:1053 94:1263 95:791
96:466 97:251 98:825 99:35 101:64 103:5
106:1 107:5 108:84 109:932 110:559 111:697
112:325 113:391 114:519 115:686 116:949 117:681
118:807 119:1143 120:301 121:671 122:1625 123:1070
124:1249 125:1221 128:266 129:164 130:172 131:567
132:113 133:19 134:217 135:49 136:214 137:141
138:301 139:106 140:488 141:174 142:398 143:398
144:485 145:52 146:441 147:207 148:584 149:233
150:173 151:187 152:308 153:179 154:3 155:396
156:191 157:353 158:132 159:384 160:316 161:243
162:276 163:165 164:489 165:350 166:511 167:426
168:718 169:153 170:785 171:77 172:1 173:1511
174:528 175:360 177:73 178:854 180:821 181:9
182:433 183:202 184:254 185:1 186:1140 187:816
188:985 189:1003 190:4844 192:5793 193:4828 194:3463
195:2964 196:1195 197:16 198:3569 199:3922 200:5540
201:1492 202:8358 203:8450 204:4134 205:2325 206:2745
207:3025 208:3975 209:3491 210:2719 211:1383 212:1967
213:1717 214:737 215:67 216:4884 217:1654 218:561
219:373 220:1197 221:483 222:341 223:143
End of report
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