Routing Table Report 04:00 +10GMT Thu 14 Apr, 2011
Report Website: http://thyme.rand.apnic.net
Detailed Analysis: http://thyme.rand.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 353287
Prefixes after maximum aggregation: 160219
Deaggregation factor: 2.21
Unique aggregates announced to Internet: 175188
Total ASes present in the Internet Routing Table: 37285
Prefixes per ASN: 9.48
Origin-only ASes present in the Internet Routing Table: 31263
Origin ASes announcing only one prefix: 15043
Transit ASes present in the Internet Routing Table: 5032
Transit-only ASes present in the Internet Routing Table: 132
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: 578
Unregistered ASNs in the Routing Table: 254
Number of 32-bit ASNs allocated by the RIRs: 1286
Number of 32-bit ASNs visible in the Routing Table: 990
Prefixes from 32-bit ASNs in the Routing Table: 2179
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 159
Number of addresses announced to Internet: 2411335232
Equivalent to 143 /8s, 186 /16s and 14 /24s
Percentage of available address space announced: 65.1
Percentage of allocated address space announced: 65.1
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: 146262
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 88070
Total APNIC prefixes after maximum aggregation: 29822
APNIC Deaggregation factor: 2.95
Prefixes being announced from the APNIC address blocks: 85062
Unique aggregates announced from the APNIC address blocks: 37008
APNIC Region origin ASes present in the Internet Routing Table: 4402
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: 696
Average APNIC Region AS path length visible: 4.6
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: 609007648
Equivalent to 36 /8s, 76 /16s and 184 /24s
Percentage of available APNIC address space announced: 77.2
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: 138936
Total ARIN prefixes after maximum aggregation: 70959
ARIN Deaggregation factor: 1.96
Prefixes being announced from the ARIN address blocks: 111433
Unique aggregates announced from the ARIN address blocks: 45159
ARIN Region origin ASes present in the Internet Routing Table: 14319
ARIN Prefixes per ASN: 7.78
ARIN Region origin ASes announcing only one prefix: 5468
ARIN Region transit ASes present in the Internet Routing Table: 1488
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: 797902592
Equivalent to 47 /8s, 143 /16s and 7 /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: 83778
Total RIPE prefixes after maximum aggregation: 47695
RIPE Deaggregation factor: 1.76
Prefixes being announced from the RIPE address blocks: 76952
Unique aggregates announced from the RIPE address blocks: 50705
RIPE Region origin ASes present in the Internet Routing Table: 15505
RIPE Prefixes per ASN: 4.96
RIPE Region origin ASes announcing only one prefix: 7789
RIPE Region transit ASes present in the Internet Routing Table: 2431
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: 734
Number of RIPE addresses announced to Internet: 466360320
Equivalent to 27 /8s, 204 /16s and 24 /24s
Percentage of available RIPE address space announced: 75.1
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: 32392
Total LACNIC prefixes after maximum aggregation: 7444
LACNIC Deaggregation factor: 4.35
Prefixes being announced from the LACNIC address blocks: 31354
Unique aggregates announced from the LACNIC address blocks: 16449
LACNIC Region origin ASes present in the Internet Routing Table: 1436
LACNIC Prefixes per ASN: 21.83
LACNIC Region origin ASes announcing only one prefix: 427
LACNIC Region transit ASes present in the Internet Routing Table: 263
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: 81924992
Equivalent to 4 /8s, 226 /16s and 19 /24s
Percentage of available LACNIC address space announced: 54.3
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: 7656
Total AfriNIC prefixes after maximum aggregation: 1829
AfriNIC Deaggregation factor: 4.19
Prefixes being announced from the AfriNIC address blocks: 6020
Unique aggregates announced from the AfriNIC address blocks: 1881
AfriNIC Region origin ASes present in the Internet Routing Table: 445
AfriNIC Prefixes per ASN: 13.53
AfriNIC Region origin ASes announcing only one prefix: 133
AfriNIC Region transit ASes present in the Internet Routing Table: 98
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: 22799872
Equivalent to 1 /8s, 91 /16s and 230 /24s
Percentage of available AfriNIC address space announced: 34.0
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 2439 9517 908 Korea Telecom (KIX)
17974 1809 515 29 PT TELEKOMUNIKASI INDONESIA
7545 1534 300 78 TPG Internet Pty Ltd
4755 1445 638 165 TATA Communications formerly
24560 1137 322 203 Bharti Airtel Ltd., Telemedia
4808 1063 2140 293 CNCGROUP IP network: China169
9583 1052 77 496 Sify Limited
9829 1008 870 50 BSNL National Internet Backbo
17488 942 162 98 Hathway IP Over Cable Interne
18101 934 116 139 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 3663 3822 255 bellsouth.net, inc.
4323 2535 1090 396 Time Warner Telecom
1785 1786 681 127 PaeTec Communications, Inc.
18566 1650 335 204 Covad Communications
6478 1621 307 41 AT&T Worldnet Services
20115 1537 1552 641 Charter Communications
19262 1494 4949 297 Verizon Global Networks
7018 1350 6801 879 AT&T WorldNet Services
22773 1298 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 517 1780 319 UPC Distribution Services
34984 508 98 185 BILISIM TELEKOM
29049 467 33 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 418 7607 364 Deutsche Telekom AG
12479 404 577 6 Uni2 Autonomous System
8551 403 353 46 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 1420 263 155 TVCABLE BOGOTA
28573 1264 972 86 NET Servicos de Comunicao S.A
8151 1243 2683 369 UniNet S.A. de C.V.
7303 924 465 147 Telecom Argentina Stet-France
6503 922 354 72 AVANTEL, S.A.
14420 661 53 90 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 814 445 11 TEDATA
24863 777 147 39 LINKdotNET AS number
15475 422 90 8 Nile Online
36992 293 287 12 Etisalat MISR
3741 266 985 227 The Internet Solution
6713 235 215 13 Itissalat Al-MAGHRIB
33776 227 13 5 Starcomms Nigeria Limited
24835 222 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 3663 3822 255 bellsouth.net, inc.
4323 2535 1090 396 Time Warner Telecom
4766 2439 9517 908 Korea Telecom (KIX)
23456 2179 640 1185 32-bit ASN transition
17974 1809 515 29 PT TELEKOMUNIKASI INDONESIA
1785 1786 681 127 PaeTec Communications, Inc.
18566 1650 335 204 Covad Communications
6478 1621 307 41 AT&T Worldnet Services
20115 1537 1552 641 Charter Communications
7545 1534 300 78 TPG Internet Pty Ltd
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 2535 2139 Time Warner Telecom
17974 1809 1780 PT TELEKOMUNIKASI INDONESIA
1785 1786 1659 PaeTec Communications, Inc.
6478 1621 1580 AT&T Worldnet Services
4766 2439 1531 Korea Telecom (KIX)
7545 1534 1456 TPG Internet Pty Ltd
18566 1650 1446 Covad Communications
4755 1445 1280 TATA Communications formerly
10620 1420 1265 TVCABLE BOGOTA
11492 1265 1250 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
45083 UNALLOCATED 1.45.0.0/16 4808 CNCGROUP IP network:
45083 UNALLOCATED 1.45.92.0/22 4808 CNCGROUP IP network:
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
Complete listing at http://thyme.rand.apnic.net/current/data-badAS
Advertised Unallocated Addresses
--------------------------------
Network Origin AS Description
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
31.7.8.0/21 8676 PRTSystems
31.7.56.0/21 51852 Private Layer INC
41.57.192.0/18 22750 BCSNET
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 /11:76 /12:219
/13:452 /14:772 /15:1376 /16:11606 /17:5735 /18:9470
/19:19134 /20:25038 /21:25541 /22:33714 /23:32469 /24:184489
/25:1119 /26:1268 /27:697 /28:39 /29:8 /30:2
/31:0 /32:6
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2260 3663 bellsouth.net, inc.
18566 1628 1650 Covad Communications
6478 1575 1621 AT&T Worldnet Services
4323 1356 2535 Time Warner Telecom
10620 1310 1420 TVCABLE BOGOTA
11492 1214 1265 Cable One
23456 1131 2179 32-bit ASN transition
7011 1062 1161 Citizens Utilities
1785 1056 1786 PaeTec Communications, Inc.
22773 842 1298 Cox Communications, Inc.
Complete listing at http://thyme.rand.apnic.net/current/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:255 2:57 4:14 5:1 8:349 12:1995
13:1 14:437 15:15 16:3 17:8 20:9
23:5 24:1607 27:716 31:220 32:60 33:3
34:2 37:1 38:763 39:1 40:101 41:2357
42:1 44:3 46:826 47:4 49:171 50:165
52:13 55:5 56:2 57:28 58:845 59:490
60:387 61:1240 62:1004 63:1920 64:3892 65:2332
66:4321 67:1803 68:1076 69:2952 70:700 71:344
72:1902 73:1 74:2334 75:285 76:336 77:851
78:690 79:457 80:1091 81:826 82:501 83:456
84:646 85:1060 86:564 87:759 88:339 89:1584
90:180 91:3701 92:513 93:1059 94:1257 95:783
96:450 97:250 98:818 99:35 101:58 103:1
106:2 107:4 108:78 109:951 110:540 111:691
112:319 113:384 114:522 115:679 116:929 117:673
118:800 119:1131 120:290 121:675 122:1630 123:1061
124:1246 125:1263 128:265 129:164 130:173 131:565
132:103 133:20 134:217 135:49 136:213 137:142
138:301 139:103 140:486 141:174 142:375 143:390
144:484 145:53 146:443 147:204 148:594 149:273
150:170 151:187 152:306 153:180 154:3 155:364
156:189 157:354 158:132 159:380 160:315 161:243
162:277 163:164 164:490 165:350 166:515 167:419
168:725 169:154 170:780 171:75 172:1 173:1257
174:540 175:353 177:71 178:849 180:790 181:7
182:419 183:197 184:242 185:1 186:1127 187:830
188:952 189:1005 190:4838 192:5779 193:4808 194:3463
195:2958 196:1203 197:16 198:3564 199:3906 200:5554
201:1494 202:8371 203:8447 204:4125 205:2325 206:2652
207:3029 208:3930 209:3481 210:2726 211:1362 212:1981
213:1726 214:736 215:66 216:4869 217:1658 218:556
219:384 220:1192 221:477 222:336 223:114
End of report
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