Routing Table Report 04:00 +10GMT Wed 27 Apr, 2011
Report Website: http://thyme.rand.apnic.net
Detailed Analysis: http://thyme.rand.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 355780
Prefixes after maximum aggregation: 160857
Deaggregation factor: 2.21
Unique aggregates announced to Internet: 175492
Total ASes present in the Internet Routing Table: 37401
Prefixes per ASN: 9.51
Origin-only ASes present in the Internet Routing Table: 31335
Origin ASes announcing only one prefix: 15078
Transit ASes present in the Internet Routing Table: 5051
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 (36992) 29
Prefixes from unregistered ASNs in the Routing Table: 563
Unregistered ASNs in the Routing Table: 282
Number of 32-bit ASNs allocated by the RIRs: 1311
Number of 32-bit ASNs visible in the Routing Table: 1015
Prefixes from 32-bit ASNs in the Routing Table: 2271
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 152
Number of addresses announced to Internet: 2419720512
Equivalent to 144 /8s, 58 /16s and 1 /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: 147721
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 88951
Total APNIC prefixes after maximum aggregation: 29926
APNIC Deaggregation factor: 2.97
Prefixes being announced from the APNIC address blocks: 85432
Unique aggregates announced from the APNIC address blocks: 36900
APNIC Region origin ASes present in the Internet Routing Table: 4422
APNIC Prefixes per ASN: 19.32
APNIC Region origin ASes announcing only one prefix: 1226
APNIC Region transit ASes present in the Internet Routing Table: 702
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: 48
Number of APNIC addresses announced to Internet: 610829600
Equivalent to 36 /8s, 104 /16s and 133 /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: 140170
Total ARIN prefixes after maximum aggregation: 71236
ARIN Deaggregation factor: 1.97
Prefixes being announced from the ARIN address blocks: 112524
Unique aggregates announced from the ARIN address blocks: 45232
ARIN Region origin ASes present in the Internet Routing Table: 14344
ARIN Prefixes per ASN: 7.84
ARIN Region origin ASes announcing only one prefix: 5473
ARIN Region transit ASes present in the Internet Routing Table: 1499
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: 798961408
Equivalent to 47 /8s, 159 /16s and 47 /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: 84013
Total RIPE prefixes after maximum aggregation: 47870
RIPE Deaggregation factor: 1.76
Prefixes being announced from the RIPE address blocks: 77189
Unique aggregates announced from the RIPE address blocks: 51057
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: 7818
RIPE Region transit ASes present in the Internet Routing Table: 2428
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: 754
Number of RIPE addresses announced to Internet: 467318016
Equivalent to 27 /8s, 218 /16s and 181 /24s
Percentage of available RIPE address space announced: 75.3
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: 32424
Total LACNIC prefixes after maximum aggregation: 7409
LACNIC Deaggregation factor: 4.38
Prefixes being announced from the LACNIC address blocks: 31412
Unique aggregates announced from the LACNIC address blocks: 16376
LACNIC Region origin ASes present in the Internet Routing Table: 1439
LACNIC Prefixes per ASN: 21.83
LACNIC Region origin ASes announcing only one prefix: 429
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: 82595456
Equivalent to 4 /8s, 236 /16s and 78 /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: 7730
Total AfriNIC prefixes after maximum aggregation: 1832
AfriNIC Deaggregation factor: 4.22
Prefixes being announced from the AfriNIC address blocks: 6097
Unique aggregates announced from the AfriNIC address blocks: 1880
AfriNIC Region origin ASes present in the Internet Routing Table: 444
AfriNIC Prefixes per ASN: 13.73
AfriNIC Region origin ASes announcing only one prefix: 132
AfriNIC Region transit ASes present in the Internet Routing Table: 94
Average AfriNIC Region AS path length visible: 4.8
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: 23359488
Equivalent to 1 /8s, 100 /16s and 112 /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 1823 515 29 PT TELEKOMUNIKASI INDONESIA
7545 1549 300 81 TPG Internet Pty Ltd
4755 1456 634 167 TATA Communications formerly
7552 1195 1064 7 Vietel Corporation
24560 1151 324 186 Bharti Airtel Ltd., Telemedia
9583 1056 77 494 Sify Limited
4808 1030 2089 293 CNCGROUP IP network: China169
9829 1008 870 50 BSNL National Internet Backbo
17488 943 165 99 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 3648 3822 255 bellsouth.net, inc.
4323 2645 1089 399 Time Warner Telecom
1785 1789 681 128 PaeTec Communications, Inc.
18566 1765 349 229 Covad Communications
6478 1647 310 46 AT&T Worldnet Services
20115 1535 1552 638 Charter Communications
19262 1496 4949 299 Verizon Global Networks
7018 1352 6798 882 AT&T WorldNet Services
22773 1300 2865 84 Cox Communications, Inc.
2386 1268 536 910 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 409 577 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 1444 268 160 TVCABLE BOGOTA
28573 1284 988 87 NET Servicos de Comunicao S.A
8151 1250 2688 370 UniNet S.A. de C.V.
7303 928 467 148 Telecom Argentina Stet-France
6503 906 354 72 AVANTEL, S.A.
14420 663 53 91 CORPORACION NACIONAL DE TELEC
22047 566 310 15 VTR PUNTO NET S.A.
3816 517 225 98 Empresa Nacional de Telecomun
11172 489 99 82 Servicios Alestra S.A de C.V
27947 480 53 52 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 879 445 11 TEDATA
24863 778 147 39 LINKdotNET AS number
15475 421 90 8 Nile Online
36992 300 415 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 215 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 3648 3822 255 bellsouth.net, inc.
4323 2645 1089 399 Time Warner Telecom
4766 2430 9482 904 Korea Telecom (KIX)
23456 2271 650 1244 32-bit ASN transition
17974 1823 515 29 PT TELEKOMUNIKASI INDONESIA
1785 1789 681 128 PaeTec Communications, Inc.
18566 1765 349 229 Covad Communications
6478 1647 310 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 2645 2246 Time Warner Telecom
17974 1823 1794 PT TELEKOMUNIKASI INDONESIA
1785 1789 1661 PaeTec Communications, Inc.
6478 1647 1601 AT&T Worldnet Services
18566 1765 1536 Covad Communications
4766 2430 1526 Korea Telecom (KIX)
7545 1549 1468 TPG Internet Pty Ltd
4755 1456 1289 TATA Communications formerly
10620 1444 1284 TVCABLE BOGOTA
11492 1259 1244 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
41.222.79.0/24 36938 >>UNKNOWN<<
41.223.92.0/22 36936 >>UNKNOWN<<
45.127.0.0/16 13767 NetworkTwo Communications Gro
50.102.0.0/15 5650 Electric Lightwave Inc.
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
/13:459 /14:788 /15:1383 /16:11674 /17:5743 /18:9633
/19:19175 /20:25614 /21:25630 /22:33805 /23:32631 /24:185732
/25:1115 /26:1286 /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 2250 3648 bellsouth.net, inc.
18566 1733 1765 Covad Communications
6478 1601 1647 AT&T Worldnet Services
4323 1342 2645 Time Warner Telecom
10620 1334 1444 TVCABLE BOGOTA
11492 1208 1259 Cable One
23456 1138 2271 32-bit ASN transition
7011 1062 1161 Citizens Utilities
1785 1059 1789 PaeTec Communications, Inc.
22773 844 1300 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 2:45 4:14 5:1 6:3 8:350
12:2005 13:1 14:443 15:15 16:3 17:8
20:9 23:5 24:1605 27:731 31:226 32:60
33:3 34:2 37:1 38:763 40:101 41:2447
42:3 44:3 46:877 47:4 49:176 50:371
52:13 55:3 56:2 57:31 58:845 59:480
60:388 61:1267 62:983 63:1921 64:3944 65:2324
66:4361 67:1864 68:1081 69:2971 70:700 71:345
72:1910 73:1 74:2355 75:296 76:336 77:836
78:680 79:452 80:1086 81:831 82:493 83:462
84:648 85:1081 86:565 87:741 88:332 89:1581
90:183 91:3720 92:508 93:1057 94:1263 95:797
96:474 97:251 98:826 99:35 101:65 103:5
106:1 107:5 108:84 109:928 110:558 111:698
112:324 113:397 114:517 115:684 116:951 117:681
118:805 119:1153 120:301 121:670 122:1625 123:1072
124:1250 125:1220 128:266 129:164 130:172 131:567
132:113 133:19 134:217 135:49 136:214 137:141
138:302 139:106 140:490 141:174 142:400 143:399
144:484 145:52 146:438 147:207 148:587 149:243
150:173 151:187 152:308 153:179 154:3 155:396
156:191 157:354 158:132 159:384 160:314 161:243
162:277 163:165 164:477 165:350 166:512 167:426
168:719 169:153 170:787 171:76 172:1 173:1510
174:529 175:361 177:79 178:855 180:825 181:13
182:432 183:201 184:255 185:1 186:1129 187:811
188:986 189:1020 190:4827 192:5792 193:4833 194:3464
195:2966 196:1204 197:16 198:3570 199:3924 200:5515
201:1408 202:8357 203:8457 204:4132 205:2326 206:2750
207:3027 208:3966 209:3487 210:2715 211:1384 212:1977
213:1714 214:743 215:67 216:4881 217:1656 218:561
219:374 220:1197 221:483 222:342 223:143
End of report
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