Routing Table Report 04:00 +10GMT Tue 12 Apr, 2011
Report Website: http://thyme.rand.apnic.net
Detailed Analysis: http://thyme.rand.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 352755
Prefixes after maximum aggregation: 160166
Deaggregation factor: 2.20
Unique aggregates announced to Internet: 174916
Total ASes present in the Internet Routing Table: 37239
Prefixes per ASN: 9.47
Origin-only ASes present in the Internet Routing Table: 31234
Origin ASes announcing only one prefix: 15027
Transit ASes present in the Internet Routing Table: 5025
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: 565
Unregistered ASNs in the Routing Table: 251
Number of 32-bit ASNs allocated by the RIRs: 1281
Number of 32-bit ASNs visible in the Routing Table: 980
Prefixes from 32-bit ASNs in the Routing Table: 2177
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 156
Number of addresses announced to Internet: 2405840448
Equivalent to 143 /8s, 102 /16s and 54 /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: 146039
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 87858
Total APNIC prefixes after maximum aggregation: 29900
APNIC Deaggregation factor: 2.94
Prefixes being announced from the APNIC address blocks: 84855
Unique aggregates announced from the APNIC address blocks: 36948
APNIC Region origin ASes present in the Internet Routing Table: 4400
APNIC Prefixes per ASN: 19.29
APNIC Region origin ASes announcing only one prefix: 1220
APNIC Region transit ASes present in the Internet Routing Table: 699
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: 606389792
Equivalent to 36 /8s, 36 /16s and 198 /24s
Percentage of available APNIC address space announced: 76.9
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: 139000
Total ARIN prefixes after maximum aggregation: 70925
ARIN Deaggregation factor: 1.96
Prefixes being announced from the ARIN address blocks: 111494
Unique aggregates announced from the ARIN address blocks: 45116
ARIN Region origin ASes present in the Internet Routing Table: 14303
ARIN Prefixes per ASN: 7.80
ARIN Region origin ASes announcing only one prefix: 5460
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: 797859584
Equivalent to 47 /8s, 142 /16s and 95 /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: 83510
Total RIPE prefixes after maximum aggregation: 47613
RIPE Deaggregation factor: 1.75
Prefixes being announced from the RIPE address blocks: 76765
Unique aggregates announced from the RIPE address blocks: 50632
RIPE Region origin ASes present in the Internet Routing Table: 15490
RIPE Prefixes per ASN: 4.96
RIPE Region origin ASes announcing only one prefix: 7785
RIPE Region transit ASes present in the Internet Routing Table: 2425
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: 726
Number of RIPE addresses announced to Internet: 464227840
Equivalent to 27 /8s, 171 /16s and 142 /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: 32312
Total LACNIC prefixes after maximum aggregation: 7436
LACNIC Deaggregation factor: 4.35
Prefixes being announced from the LACNIC address blocks: 31281
Unique aggregates announced from the LACNIC address blocks: 16372
LACNIC Region origin ASes present in the Internet Routing Table: 1436
LACNIC Prefixes per ASN: 21.78
LACNIC Region origin ASes announcing only one prefix: 431
LACNIC Region transit ASes present in the Internet Routing Table: 261
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: 191
Number of LACNIC addresses announced to Internet: 81851008
Equivalent to 4 /8s, 224 /16s and 242 /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: 7624
Total AfriNIC prefixes after maximum aggregation: 1832
AfriNIC Deaggregation factor: 4.16
Prefixes being announced from the AfriNIC address blocks: 5981
Unique aggregates announced from the AfriNIC address blocks: 1890
AfriNIC Region origin ASes present in the Internet Routing Table: 444
AfriNIC Prefixes per ASN: 13.47
AfriNIC Region origin ASes announcing only one prefix: 131
AfriNIC Region transit ASes present in the Internet Routing Table: 96
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: 22377728
Equivalent to 1 /8s, 85 /16s and 117 /24s
Percentage of available AfriNIC address space announced: 33.3
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 9517 909 Korea Telecom (KIX)
7545 1546 301 83 TPG Internet Pty Ltd
17974 1496 480 33 PT TELEKOMUNIKASI INDONESIA
4755 1445 638 166 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 1007 870 50 BSNL National Internet Backbo
17488 942 162 98 Hathway IP Over Cable Interne
18101 933 116 139 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 3666 3822 255 bellsouth.net, inc.
4323 2540 1090 396 Time Warner Telecom
1785 1787 681 127 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 6801 881 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 507 98 184 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 417 7607 363 Deutsche Telekom AG
12479 404 577 6 Uni2 Autonomous System
8551 403 353 46 Bezeq International
702 394 1800 307 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 1418 263 155 TVCABLE BOGOTA
28573 1272 972 86 NET Servicos de Comunicao S.A
8151 1241 2681 369 UniNet S.A. de C.V.
6503 959 354 72 AVANTEL, S.A.
7303 924 465 149 Telecom Argentina Stet-France
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 839 445 11 TEDATA
24863 774 147 39 LINKdotNET AS number
15475 421 90 8 Nile Online
36992 282 203 16 Etisalat MISR
3741 266 985 227 The Internet Solution
24835 232 78 10 RAYA Telecom - Egypt
6713 231 215 12 Itissalat Al-MAGHRIB
33776 227 13 5 Starcomms Nigeria Limited
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 3666 3822 255 bellsouth.net, inc.
4323 2540 1090 396 Time Warner Telecom
4766 2440 9517 909 Korea Telecom (KIX)
23456 2177 633 1180 32-bit ASN transition
1785 1787 681 127 PaeTec Communications, Inc.
18566 1642 335 197 Covad Communications
6478 1612 306 37 AT&T Worldnet Services
7545 1546 301 83 TPG Internet Pty Ltd
20115 1536 1551 641 Charter Communications
17974 1496 480 33 PT TELEKOMUNIKASI INDONESIA
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 2540 2144 Time Warner Telecom
1785 1787 1660 PaeTec Communications, Inc.
6478 1612 1575 AT&T Worldnet Services
4766 2440 1531 Korea Telecom (KIX)
7545 1546 1463 TPG Internet Pty Ltd
17974 1496 1463 PT TELEKOMUNIKASI INDONESIA
18566 1642 1445 Covad Communications
4755 1445 1279 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
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
31.7.0.0/21 12859 Business Internet Trends BV
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
/13:451 /14:772 /15:1375 /16:11592 /17:5725 /18:9444
/19:19122 /20:25019 /21:25463 /22:33560 /23:32271 /24:184479
/25:1113 /26:1267 /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 2263 3666 bellsouth.net, inc.
18566 1620 1642 Covad Communications
6478 1566 1612 AT&T Worldnet Services
4323 1361 2540 Time Warner Telecom
10620 1308 1418 TVCABLE BOGOTA
11492 1216 1267 Cable One
23456 1119 2177 32-bit ASN transition
7011 1061 1161 Citizens Utilities
1785 1057 1787 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)
----------------------------------------------
1:297 2:56 4:14 5:1 8:348 12:2000
13:1 14:435 15:15 16:3 17:8 20:9
23:5 24:1603 27:713 31:216 32:60 33:3
34:2 37:1 38:752 39:1 40:101 41:2345
42:1 44:3 46:819 47:4 49:174 50:221
52:13 55:5 56:2 57:28 58:844 59:489
60:388 61:1169 62:1004 63:1921 64:3894 65:2325
66:4308 67:1801 68:1080 69:2944 70:698 71:344
72:1900 73:1 74:2324 75:284 76:336 77:851
78:689 79:457 80:1090 81:827 82:510 83:458
84:646 85:1043 86:564 87:765 88:338 89:1585
90:180 91:3686 92:512 93:1056 94:1257 95:775
96:449 97:253 98:818 99:35 101:61 103:1
106:2 107:4 108:78 109:943 110:536 111:691
112:324 113:387 114:523 115:706 116:938 117:674
118:773 119:1141 120:290 121:708 122:1624 123:1058
124:1275 125:1271 128:265 129:165 130:173 131:564
132:102 133:20 134:217 135:49 136:213 137:142
138:301 139:103 140:488 141:174 142:375 143:392
144:479 145:53 146:442 147:203 148:591 149:273
150:168 151:187 152:304 153:180 154:3 155:393
156:189 157:354 158:132 159:380 160:317 161:243
162:277 163:164 164:486 165:350 166:507 167:418
168:722 169:154 170:780 171:74 172:1 173:1255
174:540 175:353 177:78 178:836 180:804 181:7
182:417 183:200 184:245 185:1 186:1131 187:829
188:946 189:1016 190:4821 192:5776 193:4813 194:3470
195:2957 196:1214 197:17 198:3576 199:3904 200:5551
201:1485 202:8369 203:8453 204:4125 205:2323 206:2651
207:3025 208:3924 209:3504 210:2722 211:1363 212:1972
213:1713 214:731 215:67 216:4866 217:1656 218:556
219:385 220:1192 221:480 222:311 223:117
End of report
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