Routing Table Report 08:00 +10GMT Thu 21 Apr, 2011
Report Website: http://thyme.rand.apnic.net
Detailed Analysis: http://thyme.rand.apnic.net/london/
Analysis Summary
----------------
BGP routing table entries examined: 349656
Prefixes after maximum aggregation: 158603
Deaggregation factor: 2.20
Unique aggregates announced to Internet: 174196
Total ASes present in the Internet Routing Table: 36162
Prefixes per ASN: 9.67
Origin-only ASes present in the Internet Routing Table: 31280
Origin ASes announcing only one prefix: 15058
Transit ASes present in the Internet Routing Table: 4882
Transit-only ASes present in the Internet Routing Table: 110
Average AS path length visible in the Internet Routing Table: 3.6
Max AS path length visible: 27
Max AS path prepend of ASN (32374) 19
Prefixes from unregistered ASNs in the Routing Table: 1949
Unregistered ASNs in the Routing Table: 372
Number of 32-bit ASNs allocated by the RIRs: 1308
Number of 32-bit ASNs visible in the Routing Table: 0
Prefixes from 32-bit ASNs in the Routing Table: 2262
Special use prefixes present in the Routing Table: 6
Prefixes being announced from unallocated address space: 149
Number of addresses announced to Internet: 2434283264
Equivalent to 145 /8s, 24 /16s and 55 /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: 143541
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 83931
Total APNIC prefixes after maximum aggregation: 28497
APNIC Deaggregation factor: 2.95
Prefixes being announced from the APNIC address blocks: 81763
Unique aggregates announced from the APNIC address blocks: 35997
APNIC Region origin ASes present in the Internet Routing Table: 4356
APNIC Prefixes per ASN: 18.77
APNIC Region origin ASes announcing only one prefix: 1232
APNIC Region transit ASes present in the Internet Routing Table: 660
Average APNIC Region AS path length visible: 4.1
Max APNIC Region AS path length visible: 20
Number of APNIC region 32-bit ASNs visible in the Routing Table: 0
Number of APNIC addresses announced to Internet: 611487744
Equivalent to 36 /8s, 114 /16s and 144 /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: 138632
Total ARIN prefixes after maximum aggregation: 70607
ARIN Deaggregation factor: 1.96
Prefixes being announced from the ARIN address blocks: 111344
Unique aggregates announced from the ARIN address blocks: 45092
ARIN Region origin ASes present in the Internet Routing Table: 14254
ARIN Prefixes per ASN: 7.81
ARIN Region origin ASes announcing only one prefix: 5460
ARIN Region transit ASes present in the Internet Routing Table: 1413
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: 798624768
Equivalent to 47 /8s, 154 /16s and 12 /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: 84376
Total RIPE prefixes after maximum aggregation: 47794
RIPE Deaggregation factor: 1.77
Prefixes being announced from the RIPE address blocks: 77478
Unique aggregates announced from the RIPE address blocks: 50810
RIPE Region origin ASes present in the Internet Routing Table: 15521
RIPE Prefixes per ASN: 4.99
RIPE Region origin ASes announcing only one prefix: 7797
RIPE Region transit ASes present in the Internet Routing Table: 2401
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: 466645504
Equivalent to 27 /8s, 208 /16s and 114 /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: 32116
Total LACNIC prefixes after maximum aggregation: 7323
LACNIC Deaggregation factor: 4.39
Prefixes being announced from the LACNIC address blocks: 31267
Unique aggregates announced from the LACNIC address blocks: 16473
LACNIC Region origin ASes present in the Internet Routing Table: 1430
LACNIC Prefixes per ASN: 21.87
LACNIC Region origin ASes announcing only one prefix: 437
LACNIC Region transit ASes present in the Internet Routing Table: 248
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: 82597120
Equivalent to 4 /8s, 236 /16s and 85 /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: 7643
Total AfriNIC prefixes after maximum aggregation: 1821
AfriNIC Deaggregation factor: 4.20
Prefixes being announced from the AfriNIC address blocks: 6041
Unique aggregates announced from the AfriNIC address blocks: 1872
AfriNIC Region origin ASes present in the Internet Routing Table: 437
AfriNIC Prefixes per ASN: 13.82
AfriNIC Region origin ASes announcing only one prefix: 132
AfriNIC Region transit ASes present in the Internet Routing Table: 96
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: 23279616
Equivalent to 1 /8s, 99 /16s and 56 /24s
Percentage of available AfriNIC address space announced: 34.7
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 1867 9474 600 Korea Telecom (KIX)
7545 1504 301 82 TPG Internet Pty Ltd
17974 1475 470 34 PT Telekomunikasi Indonesia
4755 1452 638 166 TATA Communications formerly
24560 1138 322 203 Bharti Airtel Ltd., Telemedia
9583 1056 78 494 Sify Limited
9829 1006 870 50 National Internet Backbone
4808 949 2028 277 CNCGROUP IP network China169
17488 940 164 98 Hathway IP Over Cable Interne
18101 934 116 138 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 3658 3822 256 BellSouth.net Inc.
4323 2646 1106 398 tw telecom holdings, inc.
1785 1792 681 128 PaeTec Communications, Inc.
18566 1707 338 239 Covad Communications Co.
6478 1633 308 40 AT&T Services, Inc.
20115 1534 1552 638 Charter Communications
19262 1495 4949 298 Verizon Online LLC
7018 1369 6962 897 AT&T Services, Inc.
22773 1298 2865 84 Cox Communications Inc.
2386 1271 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 541 326 30 Goldenlines main autonomous s
6830 517 1780 320 UPC Broadband
34984 508 106 182 BILISIM TELEKOM
29049 466 33 37 AzerSat LLC.
3292 455 1997 391 TDC Data Networks
8866 446 134 26 Bulgarian Telecommunication C
20940 440 127 338 Akamai Technologies European
3320 419 7608 365 Deutsche Telekom AG
12479 408 577 6 France Telecom Espana SA
8551 407 356 39 Bezeq International
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 1430 266 157 Types of queries are: POCs, o
28573 1264 988 87 Types of queries are: POCs, o
8151 1232 2669 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 567 310 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 484 99 80 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 837 445 11 TEDATA
24863 775 147 37 LINKdotNET AS number
15475 430 90 8 Nile Online
36992 296 415 13 Etisalat MISR
3741 267 985 227 The Internet Solution
6713 236 215 13 Itissalat Al-MAGHRIB
33776 227 13 5 Starcomms Nigeria Limited
24835 217 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 3658 3822 256 BellSouth.net Inc.
4323 2646 1106 398 tw telecom holdings, inc.
23456 2262 653 1232 32-bit ASN transition
4766 1867 9474 600 Korea Telecom (KIX)
1785 1792 681 128 PaeTec Communications, Inc.
18566 1707 338 239 Covad Communications Co.
6478 1633 308 40 AT&T Services, Inc.
20115 1534 1552 638 Charter Communications
7545 1504 301 82 TPG Internet Pty Ltd
19262 1495 4949 298 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 2646 2248 tw telecom holdings, inc.
1785 1792 1664 PaeTec Communications, Inc.
6478 1633 1593 AT&T Services, Inc.
18566 1707 1468 Covad Communications Co.
17974 1475 1441 PT Telekomunikasi Indonesia
7545 1504 1422 TPG Internet Pty Ltd
4755 1452 1286 TATA Communications formerly
10620 1430 1273 Types of queries are: POCs, o
4766 1867 1267 Korea Telecom (KIX)
11492 1266 1251 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
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
31.133.96.0/21 50440 RomEuro Consult SRL
41.222.79.0/24 36938 >>UNKNOWN<<
41.223.92.0/22 36936 >>UNKNOWN<<
45.127.0.0/16 13767 DataBank Holdings, Ltd.
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 /8:22 /9:12 /10:28 /11:77 /12:220
/13:455 /14:778 /15:1378 /16:11606 /17:5715 /18:9452
/19:19263 /20:25237 /21:25513 /22:33458 /23:32293 /24:183671
/25:11 /26:17 /27:23 /28:162 /29:95 /30:51
/31:0 /32:119
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2258 3658 BellSouth.net Inc.
18566 1681 1707 Covad Communications Co.
6478 1587 1633 AT&T Services, Inc.
4323 1343 2646 tw telecom holdings, inc.
10620 1320 1430 Types of queries are: POCs, o
11492 1215 1266 CABLE ONE, INC.
23456 1132 2262 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)
----------------------------------------------
1:257 2:50 4:14 5:1 6:1 8:347
12:2010 13:1 14:429 15:15 16:3 17:8
20:9 23:5 24:1606 27:718 31:223 32:55
33:3 34:2 37:1 38:760 40:101 41:2376
42:1 44:3 46:858 47:4 49:173 50:363
52:13 55:5 56:2 57:30 58:794 59:466
60:385 61:1088 62:1008 63:1916 64:3898 65:2322
66:4338 67:1822 68:1081 69:2963 70:700 71:344
72:1905 73:1 74:2347 75:296 76:335 77:833
78:687 79:466 80:1096 81:827 82:508 83:455
84:650 85:1083 86:564 87:769 88:331 89:1579
90:183 91:3692 92:511 93:1059 94:1262 95:785
96:458 97:251 98:819 99:35 101:55 103:5
106:1 107:5 108:84 109:937 110:549 111:686
112:317 113:388 114:504 115:672 116:930 117:655
118:766 119:1137 120:290 121:648 122:1624 123:1047
124:1223 125:1253 128:213 129:159 130:166 131:561
132:104 133:19 134:209 135:49 136:211 137:139
138:301 139:101 140:463 141:174 142:382 143:392
144:482 145:53 146:437 147:204 148:574 149:232
150:162 151:187 152:305 153:179 154:2 155:395
156:188 157:325 158:132 159:375 160:316 161:235
162:276 163:154 164:485 165:347 166:511 167:426
168:718 169:153 170:779 171:76 172:1 173:1495
174:530 175:347 177:79 178:855 180:807 181:9
182:418 183:201 184:254 185:1 186:1141 187:808
188:987 189:1001 190:4823 192:5743 193:4829 194:3461
195:2963 196:1171 197:16 198:3512 199:3889 200:5523
201:1495 202:8109 203:8325 204:4053 205:2308 206:2644
207:2957 208:3937 209:3472 210:2654 211:1355 212:1986
213:1715 214:738 215:65 216:4846 217:1655 218:545
219:379 220:1190 221:460 222:305 223:128
End of report
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