Routing Table Report 04:00 +10GMT Mon 25 Apr, 2011
Report Website: http://thyme.rand.apnic.net
Detailed Analysis: http://thyme.rand.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 355719
Prefixes after maximum aggregation: 160879
Deaggregation factor: 2.21
Unique aggregates announced to Internet: 175514
Total ASes present in the Internet Routing Table: 37388
Prefixes per ASN: 9.51
Origin-only ASes present in the Internet Routing Table: 31332
Origin ASes announcing only one prefix: 15070
Transit ASes present in the Internet Routing Table: 5045
Transit-only ASes present in the Internet Routing Table: 133
Average AS path length visible in the Internet Routing Table: 4.3
Max AS path length visible: 36
Max AS path prepend of ASN (36992) 29
Prefixes from unregistered ASNs in the Routing Table: 565
Unregistered ASNs in the Routing Table: 277
Number of 32-bit ASNs allocated by the RIRs: 1311
Number of 32-bit ASNs visible in the Routing Table: 1011
Prefixes from 32-bit ASNs in the Routing Table: 2257
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 148
Number of addresses announced to Internet: 2418298688
Equivalent to 144 /8s, 36 /16s and 79 /24s
Percentage of available address space announced: 65.2
Percentage of allocated address space announced: 65.2
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: 147691
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 88969
Total APNIC prefixes after maximum aggregation: 29961
APNIC Deaggregation factor: 2.97
Prefixes being announced from the APNIC address blocks: 85446
Unique aggregates announced from the APNIC address blocks: 36875
APNIC Region origin ASes present in the Internet Routing Table: 4419
APNIC Prefixes per ASN: 19.34
APNIC Region origin ASes announcing only one prefix: 1224
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: 610713888
Equivalent to 36 /8s, 102 /16s and 193 /24s
Percentage of available APNIC address space announced: 77.4
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: 140077
Total ARIN prefixes after maximum aggregation: 71214
ARIN Deaggregation factor: 1.97
Prefixes being announced from the ARIN address blocks: 112473
Unique aggregates announced from the ARIN address blocks: 45213
ARIN Region origin ASes present in the Internet Routing Table: 14338
ARIN Prefixes per ASN: 7.84
ARIN Region origin ASes announcing only one prefix: 5471
ARIN Region transit ASes present in the Internet Routing Table: 1492
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: 798919168
Equivalent to 47 /8s, 158 /16s and 138 /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: 83926
Total RIPE prefixes after maximum aggregation: 47855
RIPE Deaggregation factor: 1.75
Prefixes being announced from the RIPE address blocks: 77097
Unique aggregates announced from the RIPE address blocks: 51026
RIPE Region origin ASes present in the Internet Routing Table: 15546
RIPE Prefixes per ASN: 4.96
RIPE Region origin ASes announcing only one prefix: 7810
RIPE Region transit ASes present in the Internet Routing Table: 2432
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: 750
Number of RIPE addresses announced to Internet: 466796288
Equivalent to 27 /8s, 210 /16s and 191 /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: 32525
Total LACNIC prefixes after maximum aggregation: 7446
LACNIC Deaggregation factor: 4.37
Prefixes being announced from the LACNIC address blocks: 31503
Unique aggregates announced from the LACNIC address blocks: 16482
LACNIC Region origin ASes present in the Internet Routing Table: 1441
LACNIC Prefixes per ASN: 21.86
LACNIC Region origin ASes announcing only one prefix: 431
LACNIC Region transit ASes present in the Internet Routing Table: 262
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: 197
Number of LACNIC addresses announced to Internet: 82684544
Equivalent to 4 /8s, 237 /16s and 170 /24s
Percentage of available LACNIC address space announced: 54.8
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: 6119
Unique aggregates announced from the AfriNIC address blocks: 1896
AfriNIC Region origin ASes present in the Internet Routing Table: 447
AfriNIC Prefixes per ASN: 13.69
AfriNIC Region origin ASes announcing only one prefix: 134
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: 23375616
Equivalent to 1 /8s, 100 /16s and 175 /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 1807 515 29 PT TELEKOMUNIKASI INDONESIA
7545 1549 300 81 TPG Internet Pty Ltd
4755 1454 634 167 TATA Communications formerly
7552 1195 1064 7 Vietel Corporation
24560 1139 323 204 Bharti Airtel Ltd., Telemedia
9583 1054 77 495 Sify Limited
4808 1030 2097 293 CNCGROUP IP network: China169
9829 1003 868 53 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 3651 3822 255 bellsouth.net, inc.
4323 2648 1090 398 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 1356 6801 885 AT&T WorldNet Services
22773 1299 2865 84 Cox Communications, Inc.
2386 1269 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 508 106 182 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 407 577 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 1248 2688 370 UniNet S.A. de C.V.
7303 926 467 148 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 516 225 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 216 78 10 RAYA Telecom - Egypt
29571 161 17 11 Ci Telecom Autonomous system
16637 148 441 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 3651 3822 255 bellsouth.net, inc.
4323 2648 1090 398 Time Warner Telecom
4766 2430 9482 904 Korea Telecom (KIX)
23456 2257 651 1231 32-bit ASN transition
17974 1807 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 2648 2250 Time Warner Telecom
17974 1807 1778 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 1454 1287 TATA Communications formerly
10620 1438 1278 TVCABLE BOGOTA
11492 1256 1241 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 /14:787 /15:1379 /16:11668 /17:5742 /18:9615
/19:19171 /20:25599 /21:25632 /22:33798 /23:32619 /24:185746
/25:1112 /26:1281 /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 2252 3651 bellsouth.net, inc.
18566 1728 1760 Covad Communications
6478 1595 1641 AT&T Worldnet Services
4323 1345 2648 Time Warner Telecom
10620 1328 1438 TVCABLE BOGOTA
11492 1205 1256 Cable One
23456 1140 2257 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 2:43 4:14 5:1 6:3 8:348
12:2011 13:1 14:446 15:15 16:3 17:8
20:9 23:5 24:1608 27:724 31:210 32:60
33:3 34:2 37:1 38:765 40:101 41:2438
42:3 44:3 46:866 47:4 49:177 50:366
52:13 55:3 56:2 57:31 58:846 59:478
60:387 61:1267 62:984 63:1921 64:3936 65:2326
66:4355 67:1856 68:1081 69:2977 70:699 71:345
72:1907 73:1 74:2354 75:297 76:336 77:843
78:676 79:450 80:1099 81:829 82:497 83:460
84:649 85:1081 86:565 87:741 88:332 89:1579
90:183 91:3713 92:515 93:1056 94:1258 95:790
96:466 97:251 98:824 99:35 101:64 103:5
106:1 107:5 108:84 109:931 110:557 111:696
112:325 113:391 114:523 115:683 116:949 117:676
118:805 119:1140 120:301 121:672 122:1628 123:1071
124:1247 125:1271 128:265 129:160 130:172 131:566
132:113 133:19 134:217 135:49 136:214 137:141
138:301 139:106 140:486 141:174 142:398 143:399
144:485 145:52 146:441 147:207 148:584 149:233
150:171 151:187 152:307 153:179 154:3 155:396
156:190 157:353 158:132 159:384 160:316 161:243
162:277 163:165 164:489 165:349 166:511 167:426
168:719 169:152 170:784 171:77 172:1 173:1511
174:528 175:360 177:73 178:853 180:818 181:9
182:432 183:206 184:253 185:1 186:1144 187:811
188:983 189:1004 190:4847 192:5793 193:4824 194:3462
195:2967 196:1194 197:16 198:3564 199:3924 200:5539
201:1494 202:8360 203:8454 204:4138 205:2328 206:2743
207:3029 208:3973 209:3491 210:2727 211:1382 212:1946
213:1715 214:737 215:66 216:4882 217:1656 218:561
219:374 220:1195 221:483 222:341 223:143
End of report
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