Routing Table Report 08:00 +10GMT Tue 12 Apr, 2011
Report Website: http://thyme.rand.apnic.net
Detailed Analysis: http://thyme.rand.apnic.net/london/
Analysis Summary
----------------
BGP routing table entries examined: 347925
Prefixes after maximum aggregation: 158234
Deaggregation factor: 2.20
Unique aggregates announced to Internet: 174828
Total ASes present in the Internet Routing Table: 36105
Prefixes per ASN: 9.64
Origin-only ASes present in the Internet Routing Table: 31218
Origin ASes announcing only one prefix: 15027
Transit ASes present in the Internet Routing Table: 4887
Transit-only ASes present in the Internet Routing Table: 116
Average AS path length visible in the Internet Routing Table: 3.6
Max AS path length visible: 25
Max AS path prepend of ASN (32374) 19
Prefixes from unregistered ASNs in the Routing Table: 1977
Unregistered ASNs in the Routing Table: 356
Number of 32-bit ASNs allocated by the RIRs: 1281
Number of 32-bit ASNs visible in the Routing Table: 0
Prefixes from 32-bit ASNs in the Routing Table: 2185
Special use prefixes present in the Routing Table: 6
Prefixes being announced from unallocated address space: 155
Number of addresses announced to Internet: 2425541120
Equivalent to 144 /8s, 146 /16s and 210 /24s
Percentage of available address space announced: 65.4
Percentage of allocated address space announced: 65.4
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: 142601
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 83766
Total APNIC prefixes after maximum aggregation: 28510
APNIC Deaggregation factor: 2.94
Prefixes being announced from the APNIC address blocks: 81606
Unique aggregates announced from the APNIC address blocks: 36858
APNIC Region origin ASes present in the Internet Routing Table: 4345
APNIC Prefixes per ASN: 18.78
APNIC Region origin ASes announcing only one prefix: 1229
APNIC Region transit ASes present in the Internet Routing Table: 666
Average APNIC Region AS path length visible: 4.1
Max APNIC Region AS path length visible: 23
Number of APNIC region 32-bit ASNs visible in the Routing Table: 0
Number of APNIC addresses announced to Internet: 607776768
Equivalent to 36 /8s, 57 /16s and 240 /24s
Percentage of available APNIC address space announced: 77.1
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: 137751
Total ARIN prefixes after maximum aggregation: 70475
ARIN Deaggregation factor: 1.95
Prefixes being announced from the ARIN address blocks: 110573
Unique aggregates announced from the ARIN address blocks: 45139
ARIN Region origin ASes present in the Internet Routing Table: 14227
ARIN Prefixes per ASN: 7.77
ARIN Region origin ASes announcing only one prefix: 5447
ARIN Region transit ASes present in the Internet Routing Table: 1415
Average ARIN Region AS path length visible: 3.3
Max ARIN Region AS path length visible: 22
Number of ARIN region 32-bit ASNs visible in the Routing Table: 0
Number of ARIN addresses announced to Internet: 797869568
Equivalent to 47 /8s, 142 /16s and 134 /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: 83866
Total RIPE prefixes after maximum aggregation: 47609
RIPE Deaggregation factor: 1.76
Prefixes being announced from the RIPE address blocks: 77109
Unique aggregates announced from the RIPE address blocks: 50655
RIPE Region origin ASes present in the Internet Routing Table: 15494
RIPE Prefixes per ASN: 4.98
RIPE Region origin ASes announcing only one prefix: 7787
RIPE Region transit ASes present in the Internet Routing Table: 2393
Average RIPE Region AS path length visible: 3.5
Max RIPE Region AS path length visible: 25
Number of RIPE region 32-bit ASNs visible in the Routing Table: 0
Number of RIPE addresses announced to Internet: 464409600
Equivalent to 27 /8s, 174 /16s and 84 /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: 31972
Total LACNIC prefixes after maximum aggregation: 7345
LACNIC Deaggregation factor: 4.35
Prefixes being announced from the LACNIC address blocks: 31080
Unique aggregates announced from the LACNIC address blocks: 16379
LACNIC Region origin ASes present in the Internet Routing Table: 1423
LACNIC Prefixes per ASN: 21.84
LACNIC Region origin ASes announcing only one prefix: 431
LACNIC Region transit ASes present in the Internet Routing Table: 250
Average LACNIC Region AS path length visible: 4.0
Max LACNIC Region AS path length visible: 18
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 0
Number of LACNIC addresses announced to Internet: 81809152
Equivalent to 4 /8s, 224 /16s and 79 /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: 7630
Total AfriNIC prefixes after maximum aggregation: 1827
AfriNIC Deaggregation factor: 4.18
Prefixes being announced from the AfriNIC address blocks: 5986
Unique aggregates announced from the AfriNIC address blocks: 1880
AfriNIC Region origin ASes present in the Internet Routing Table: 444
AfriNIC Prefixes per ASN: 13.48
AfriNIC Region origin ASes announcing only one prefix: 133
AfriNIC Region transit ASes present in the Internet Routing Table: 99
Average AfriNIC Region AS path length visible: 3.4
Max AfriNIC Region AS path length visible: 17
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 0
Number of AfriNIC addresses announced to Internet: 22728448
Equivalent to 1 /8s, 90 /16s and 207 /24s
Percentage of available AfriNIC address space announced: 33.9
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 1853 9509 603 Korea Telecom (KIX)
7545 1512 301 82 TPG Internet Pty Ltd
17974 1456 472 34 PT Telekomunikasi Indonesia
4755 1446 638 167 TATA Communications formerly
24560 1137 322 203 Bharti Airtel Ltd., Telemedia
9583 1056 77 495 Sify Limited
9829 1007 870 50 National Internet Backbone
4808 949 2028 277 CNCGROUP IP network China169
17488 940 162 98 Hathway IP Over Cable Interne
18101 934 116 139 Reliance Infocom Ltd Internet
Complete listing at http://thyme.rand.apnic.net/london/data-ASnet-APNIC
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
6389 3667 3822 256 BellSouth.net Inc.
4323 2539 1106 397 tw telecom holdings, inc.
1785 1790 681 127 PaeTec Communications, Inc.
18566 1633 333 200 Covad Communications Co.
6478 1612 306 37 AT&T Services, Inc.
20115 1536 1551 641 Charter Communications
19262 1490 4948 296 Verizon Online LLC
7018 1366 6962 893 AT&T Services, Inc.
22773 1293 2865 84 Cox Communications Inc.
2386 1271 536 914 AT&T Data Communications Serv
Complete listing at http://thyme.rand.apnic.net/london/data-ASnet-ARIN
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
9116 541 326 30 Goldenlines main autonomous s
6830 513 1780 318 UPC Broadband
34984 507 98 184 BILISIM TELEKOM
29049 467 33 34 AzerSat LLC.
3292 455 2013 392 TDC Data Networks
8866 446 134 26 Bulgarian Telecommunication C
20940 445 129 341 Akamai Technologies European
3320 416 7607 362 Deutsche Telekom AG
8551 405 355 38 Bezeq International
12479 404 577 6 France Telecom Espana SA
Complete listing at http://thyme.rand.apnic.net/london/data-ASnet-RIPE
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
10620 1417 263 154 Types of queries are: POCs, o
28573 1254 972 86 Types of queries are: POCs, o
8151 1231 2665 363 Uninet S.A. de C.V.
6503 959 354 73 Axtel, S.A.B. de C.V.
7303 900 464 136 Telecom Argentina S.A.
14420 661 53 90 CORPORACION NACIONAL DE TELEC
22047 567 310 15 Types of queries are: POCs, o
3816 517 225 97 Types of queries are: POCs, o
11172 485 99 81 Alestra, S. de R.L. de C.V.
7738 479 922 30 Telecomunicacoes da Bahia S.A
Complete listing at http://thyme.rand.apnic.net/london/data-ASnet-LACNIC
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
8452 837 445 11 TEDATA
24863 771 147 37 LINKdotNET AS number
15475 426 90 8 Nile Online
36992 294 287 12 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 147 441 86 MTN Network Solutions
Complete listing at http://thyme.rand.apnic.net/london/data-ASnet-AFRINIC
Global Per AS prefix count summary
----------------------------------
ASN No of nets /20 equiv MaxAgg Description
6389 3667 3822 256 BellSouth.net Inc.
4323 2539 1106 397 tw telecom holdings, inc.
23456 2185 636 1184 32-bit ASN transition
4766 1853 9509 603 Korea Telecom (KIX)
1785 1790 681 127 PaeTec Communications, Inc.
18566 1633 333 200 Covad Communications Co.
6478 1612 306 37 AT&T Services, Inc.
20115 1536 1551 641 Charter Communications
7545 1512 301 82 TPG Internet Pty Ltd
19262 1490 4948 296 Verizon Online LLC
Complete listing at http://thyme.rand.apnic.net/london/data-ASnet
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
4323 2539 2142 tw telecom holdings, inc.
1785 1790 1663 PaeTec Communications, Inc.
6478 1612 1575 AT&T Services, Inc.
18566 1633 1433 Covad Communications Co.
7545 1512 1430 TPG Internet Pty Ltd
17974 1456 1422 PT Telekomunikasi Indonesia
4755 1446 1279 TATA Communications formerly
10620 1417 1263 Types of queries are: POCs, o
4766 1853 1250 Korea Telecom (KIX)
11492 1264 1249 CABLE ONE, INC.
Complete listing at http://thyme.rand.apnic.net/london/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
65333 PRIVATE 10.0.0.0/8 0 *
32805 UNALLOCATED 12.1.225.0/24 7018 AT&T Services, Inc.
15132 UNALLOCATED 12.9.150.0/24 7018 AT&T Services, Inc.
32567 UNALLOCATED 12.14.170.0/24 7018 AT&T Services, Inc.
16504 UNALLOCATED 12.18.155.0/24 30170 Optic Fusion
13746 UNALLOCATED 12.24.56.0/24 7018 AT&T Services, Inc.
32567 UNALLOCATED 12.25.107.0/24 4323 tw telecom holdings,
30031 UNALLOCATED 12.27.122.0/24 7018 AT&T Services, Inc.
Complete listing at http://thyme.rand.apnic.net/london/data-badAS
Prefixes from private and non-routed address space (Global)
-----------------------------------------------------------
Prefix Origin AS Description
10.0.0.0/8 65333 Internet Assigned Numbers Aut
169.254.0.0/16 65333 Internet Assigned Numbers Aut
172.16.0.0/12 65333 Internet Assigned Numbers Aut
192.0.2.0/24 65333 Internet Assigned Numbers Aut
192.168.0.0/16 65535 Internet Assigned Numbers Aut
198.18.0.0/15 65333 Internet Assigned Numbers Aut
Complete listing at http://thyme.rand.apnic.net/london/data-dsua
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/london/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 /10:26 /11:75 /12:219
/13:452 /14:771 /15:1376 /16:11564 /17:5701 /18:9384
/19:19209 /20:25041 /21:25384 /22:33437 /23:32024 /24:182745
/25:11 /26:17 /27:24 /28:160 /29:97 /30:52
/31:0 /32:124
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2263 3667 BellSouth.net Inc.
18566 1611 1633 Covad Communications Co.
6478 1566 1612 AT&T Services, Inc.
4323 1359 2539 tw telecom holdings, inc.
10620 1307 1417 Types of queries are: POCs, o
11492 1213 1264 CABLE ONE, INC.
23456 1124 2185 32-bit ASN transition
7011 1061 1161 Frontier Communications of Am
1785 1057 1790 PaeTec Communications, Inc.
22773 837 1293 Cox Communications Inc.
Complete listing at http://thyme.rand.apnic.net/london/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:294 2:55 4:14 5:1 8:348 12:1999
13:1 14:421 15:15 16:3 17:8 20:9
23:5 24:1601 27:712 31:218 32:55 33:3
34:2 37:1 38:748 39:1 40:101 41:2347
42:1 44:3 46:817 47:4 49:174 50:219
52:13 55:4 56:2 57:30 58:795 59:478
60:386 61:1061 62:1005 63:1915 64:3863 65:2329
66:4300 67:1800 68:1079 69:2944 70:697 71:344
72:1900 73:1 74:2322 75:284 76:336 77:849
78:689 79:459 80:1089 81:827 82:513 83:461
84:646 85:1043 86:564 87:774 88:338 89:1579
90:180 91:3688 92:511 93:1058 94:1260 95:776
96:444 97:253 98:817 99:35 101:53 103:1
106:2 107:4 108:78 109:941 110:536 111:683
112:314 113:386 114:503 115:698 116:914 117:671
118:760 119:1127 120:287 121:690 122:1622 123:1042
124:1250 125:1258 128:213 129:159 130:167 131:562
132:102 133:20 134:209 135:49 136:210 137:139
138:301 139:101 140:465 141:174 142:359 143:390
144:479 145:53 146:438 147:204 148:586 149:262
150:160 151:187 152:303 153:180 154:2 155:393
156:186 157:326 158:132 159:373 160:316 161:234
162:276 163:154 164:484 165:348 166:507 167:418
168:719 169:153 170:775 171:74 172:1 173:1255
174:540 175:341 177:78 178:838 180:796 181:7
182:396 183:200 184:241 185:1 186:1126 187:830
188:947 189:1016 190:4807 192:5727 193:4815 194:3466
195:2958 196:1213 197:17 198:3521 199:3872 200:5519
201:1485 202:8122 203:8322 204:4054 205:2301 206:2550
207:2950 208:3912 209:3474 210:2641 211:1353 212:1988
213:1716 214:727 215:66 216:4840 217:1657 218:544
219:383 220:1184 221:458 222:305 223:102
End of report
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