Routing Table Report 08:00 +10GMT Mon 25 Apr, 2011
Report Website: http://thyme.rand.apnic.net
Detailed Analysis: http://thyme.rand.apnic.net/london/
Analysis Summary
----------------
BGP routing table entries examined: 350472
Prefixes after maximum aggregation: 158895
Deaggregation factor: 2.21
Unique aggregates announced to Internet: 175370
Total ASes present in the Internet Routing Table: 36212
Prefixes per ASN: 9.68
Origin-only ASes present in the Internet Routing Table: 31312
Origin ASes announcing only one prefix: 15073
Transit ASes present in the Internet Routing Table: 4900
Transit-only ASes present in the Internet Routing Table: 113
Average AS path length visible in the Internet Routing Table: 3.6
Max AS path length visible: 27
Max AS path prepend of ASN (45903) 19
Prefixes from unregistered ASNs in the Routing Table: 1953
Unregistered ASNs in the Routing Table: 379
Number of 32-bit ASNs allocated by the RIRs: 1311
Number of 32-bit ASNs visible in the Routing Table: 0
Prefixes from 32-bit ASNs in the Routing Table: 2257
Special use prefixes present in the Routing Table: 6
Prefixes being announced from unallocated address space: 147
Number of addresses announced to Internet: 2435302656
Equivalent to 145 /8s, 39 /16s and 197 /24s
Percentage of available address space announced: 65.7
Percentage of allocated address space announced: 65.7
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: 144144
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 84541
Total APNIC prefixes after maximum aggregation: 28569
APNIC Deaggregation factor: 2.96
Prefixes being announced from the APNIC address blocks: 81844
Unique aggregates announced from the APNIC address blocks: 36789
APNIC Region origin ASes present in the Internet Routing Table: 4364
APNIC Prefixes per ASN: 18.75
APNIC Region origin ASes announcing only one prefix: 1232
APNIC Region transit ASes present in the Internet Routing Table: 663
Average APNIC Region AS path length visible: 4.1
Max APNIC Region AS path length visible: 22
Number of APNIC region 32-bit ASNs visible in the Routing Table: 0
Number of APNIC addresses announced to Internet: 610002176
Equivalent to 36 /8s, 91 /16s and 229 /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: 138777
Total ARIN prefixes after maximum aggregation: 70747
ARIN Deaggregation factor: 1.96
Prefixes being announced from the ARIN address blocks: 111494
Unique aggregates announced from the ARIN address blocks: 45205
ARIN Region origin ASes present in the Internet Routing Table: 14260
ARIN Prefixes per ASN: 7.82
ARIN Region origin ASes announcing only one prefix: 5457
ARIN Region transit ASes present in the Internet Routing Table: 1414
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: 798851328
Equivalent to 47 /8s, 157 /16s and 129 /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: 84306
Total RIPE prefixes after maximum aggregation: 47847
RIPE Deaggregation factor: 1.76
Prefixes being announced from the RIPE address blocks: 77461
Unique aggregates announced from the RIPE address blocks: 51025
RIPE Region origin ASes present in the Internet Routing Table: 15546
RIPE Prefixes per ASN: 4.98
RIPE Region origin ASes announcing only one prefix: 7814
RIPE Region transit ASes present in the Internet Routing Table: 2413
Average RIPE Region AS path length visible: 3.6
Max RIPE Region AS path length visible: 27
Number of RIPE region 32-bit ASNs visible in the Routing Table: 0
Number of RIPE addresses announced to Internet: 466823424
Equivalent to 27 /8s, 211 /16s and 41 /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: 32161
Total LACNIC prefixes after maximum aggregation: 7327
LACNIC Deaggregation factor: 4.39
Prefixes being announced from the LACNIC address blocks: 31287
Unique aggregates announced from the LACNIC address blocks: 16482
LACNIC Region origin ASes present in the Internet Routing Table: 1430
LACNIC Prefixes per ASN: 21.88
LACNIC Region origin ASes announcing only one prefix: 435
LACNIC Region transit ASes present in the Internet Routing Table: 249
Average LACNIC Region AS path length visible: 4.0
Max LACNIC Region AS path length visible: 19
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 0
Number of LACNIC addresses announced to Internet: 82640384
Equivalent to 4 /8s, 236 /16s and 254 /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: 7745
Total AfriNIC prefixes after maximum aggregation: 1844
AfriNIC Deaggregation factor: 4.20
Prefixes being announced from the AfriNIC address blocks: 6112
Unique aggregates announced from the AfriNIC address blocks: 1895
AfriNIC Region origin ASes present in the Internet Routing Table: 446
AfriNIC Prefixes per ASN: 13.70
AfriNIC Region origin ASes announcing only one prefix: 135
AfriNIC Region transit ASes present in the Internet Routing Table: 98
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: 23373824
Equivalent to 1 /8s, 100 /16s and 168 /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 1868 9474 600 Korea Telecom (KIX)
17974 1466 470 34 PT Telekomunikasi Indonesia
4755 1452 634 166 TATA Communications formerly
7545 1438 300 79 TPG Internet Pty Ltd
7552 1195 1064 7 Vietel Corporation
24560 1144 323 204 Bharti Airtel Ltd., Telemedia
9583 1055 77 496 Sify Limited
9829 1008 870 50 National Internet Backbone
4808 944 2019 276 CNCGROUP IP network China169
17488 940 164 98 Hathway IP Over Cable Interne
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 3652 3822 256 BellSouth.net Inc.
4323 2647 1106 399 tw telecom holdings, inc.
1785 1792 681 128 PaeTec Communications, Inc.
18566 1707 338 239 Covad Communications Co.
6478 1641 309 46 AT&T Services, Inc.
20115 1535 1552 638 Charter Communications
19262 1494 4949 297 Verizon Online LLC
7018 1369 6962 897 AT&T Services, Inc.
22773 1298 2865 84 Cox Communications Inc.
2386 1270 536 912 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 540 326 30 Goldenlines main autonomous s
6830 517 1780 320 UPC Broadband
34984 508 106 182 BILISIM TELEKOM
3292 455 1997 391 TDC Data Networks
29049 450 33 48 AzerSat LLC.
8866 446 134 26 Bulgarian Telecommunication C
20940 443 130 338 Akamai Technologies European
3320 422 7609 367 Deutsche Telekom AG
8551 407 356 39 Bezeq International
12479 407 577 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 1438 268 160 Types of queries are: POCs, o
28573 1261 988 87 Types of queries are: POCs, o
8151 1227 2668 360 Uninet S.A. de C.V.
6503 907 354 73 Axtel, S.A.B. de C.V.
7303 904 466 137 Telecom Argentina S.A.
14420 663 53 91 CORPORACION NACIONAL DE TELEC
22047 565 310 15 Types of queries are: POCs, o
3816 517 225 97 Types of queries are: POCs, o
14117 492 46 43 Telefonica del Sur S.A.
11172 485 99 81 Alestra, S. de R.L. de C.V.
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 862 445 11 TEDATA
24863 775 147 37 LINKdotNET AS number
15475 430 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 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 3652 3822 256 BellSouth.net Inc.
4323 2647 1106 399 tw telecom holdings, inc.
23456 2257 653 1232 32-bit ASN transition
4766 1868 9474 600 Korea Telecom (KIX)
1785 1792 681 128 PaeTec Communications, Inc.
18566 1707 338 239 Covad Communications Co.
6478 1641 309 46 AT&T Services, Inc.
20115 1535 1552 638 Charter Communications
19262 1494 4949 297 Verizon Online LLC
17974 1466 470 34 PT Telekomunikasi Indonesia
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 2647 2248 tw telecom holdings, inc.
1785 1792 1664 PaeTec Communications, Inc.
6478 1641 1595 AT&T Services, Inc.
18566 1707 1468 Covad Communications Co.
17974 1466 1432 PT Telekomunikasi Indonesia
7545 1438 1359 TPG Internet Pty Ltd
4755 1452 1286 TATA Communications formerly
10620 1438 1278 Types of queries are: POCs, o
4766 1868 1268 Korea Telecom (KIX)
11492 1252 1237 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
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.
26095 UNALLOCATED 12.34.8.0/24 7018 AT&T Services, Inc.
21861 UNALLOCATED 12.37.59.0/24 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
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 DataBank Holdings, Ltd.
62.61.220.0/24 24974 Tachyon Europe BV
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 /8:21 /9:12 /10:28 /11:77 /12:221
/13:458 /14:786 /15:1379 /16:11637 /17:5734 /18:9541
/19:19265 /20:25622 /21:25525 /22:33527 /23:32263 /24:183906
/25:11 /26:17 /27:23 /28:160 /29:95 /30:51
/31:0 /32:113
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2252 3652 BellSouth.net Inc.
18566 1681 1707 Covad Communications Co.
6478 1595 1641 AT&T Services, Inc.
4323 1343 2647 tw telecom holdings, inc.
10620 1328 1438 Types of queries are: POCs, o
11492 1201 1252 CABLE ONE, INC.
23456 1138 2257 32-bit ASN transition
7011 1062 1161 Frontier Communications of Am
1785 1059 1792 PaeTec Communications, Inc.
22773 842 1298 Cox Communications Inc.
Complete listing at http://thyme.rand.apnic.net/london/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:261 2:43 4:14 5:1 6:3 8:348
12:2008 13:1 14:426 15:15 16:3 17:8
20:9 23:5 24:1604 27:722 31:210 32:55
33:3 34:2 37:1 38:761 40:101 41:2435
42:3 44:3 46:866 47:4 49:177 50:366
52:13 55:3 56:2 57:29 58:796 59:468
60:354 61:1091 62:985 63:1916 64:3909 65:2322
66:4343 67:1855 68:1080 69:2974 70:698 71:345
72:1908 73:1 74:2353 75:297 76:336 77:844
78:676 79:460 80:1097 81:831 82:501 83:463
84:649 85:1082 86:563 87:751 88:333 89:1578
90:183 91:3712 92:515 93:1056 94:1261 95:788
96:461 97:251 98:823 99:35 101:56 103:5
106:1 107:5 108:84 109:929 110:548 111:688
112:314 113:390 114:504 115:675 116:930 117:673
118:767 119:1135 120:299 121:648 122:1624 123:1055
124:1224 125:1255 128:213 129:155 130:166 131:563
132:104 133:19 134:209 135:49 136:211 137:138
138:301 139:104 140:463 141:174 142:382 143:396
144:482 145:52 146:437 147:207 148:575 149:232
150:163 151:187 152:305 153:179 154:2 155:396
156:187 157:324 158:132 159:377 160:315 161:235
162:276 163:155 164:489 165:347 166:511 167:426
168:714 169:151 170:780 171:77 172:1 173:1511
174:528 175:348 177:73 178:852 180:810 181:9
182:420 183:206 184:253 185:1 186:1142 187:811
188:984 189:1004 190:4830 192:5744 193:4830 194:3459
195:2969 196:1198 197:16 198:3510 199:3891 200:5521
201:1490 202:8131 203:8323 204:4061 205:2308 206:2643
207:2957 208:3963 209:3464 210:2652 211:1373 212:1960
213:1714 214:737 215:67 216:4857 217:1656 218:550
219:372 220:1191 221:465 222:305 223:128
End of report
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