Routing Table Report 08:00 +10GMT Wed 20 Apr, 2011
Report Website: http://thyme.rand.apnic.net
Detailed Analysis: http://thyme.rand.apnic.net/london/
Analysis Summary
----------------
BGP routing table entries examined: 349586
Prefixes after maximum aggregation: 158553
Deaggregation factor: 2.20
Unique aggregates announced to Internet: 174880
Total ASes present in the Internet Routing Table: 36162
Prefixes per ASN: 9.67
Origin-only ASes present in the Internet Routing Table: 31274
Origin ASes announcing only one prefix: 15054
Transit ASes present in the Internet Routing Table: 4888
Transit-only ASes present in the Internet Routing Table: 108
Average AS path length visible in the Internet Routing Table: 3.6
Max AS path length visible: 27
Max AS path prepend of ASN (50912) 25
Prefixes from unregistered ASNs in the Routing Table: 1950
Unregistered ASNs in the Routing Table: 371
Number of 32-bit ASNs allocated by the RIRs: 1303
Number of 32-bit ASNs visible in the Routing Table: 0
Prefixes from 32-bit ASNs in the Routing Table: 2248
Special use prefixes present in the Routing Table: 6
Prefixes being announced from unallocated address space: 154
Number of addresses announced to Internet: 2431017984
Equivalent to 144 /8s, 230 /16s and 100 /24s
Percentage of available address space announced: 65.6
Percentage of allocated address space announced: 65.6
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: 143546
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 83911
Total APNIC prefixes after maximum aggregation: 28490
APNIC Deaggregation factor: 2.95
Prefixes being announced from the APNIC address blocks: 81737
Unique aggregates announced from the APNIC address blocks: 36723
APNIC Region origin ASes present in the Internet Routing Table: 4357
APNIC Prefixes per ASN: 18.76
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: 20
Number of APNIC region 32-bit ASNs visible in the Routing Table: 0
Number of APNIC addresses announced to Internet: 609161472
Equivalent to 36 /8s, 79 /16s and 17 /24s
Percentage of available APNIC address space announced: 77.3
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: 138593
Total ARIN prefixes after maximum aggregation: 70600
ARIN Deaggregation factor: 1.96
Prefixes being announced from the ARIN address blocks: 111309
Unique aggregates announced from the ARIN address blocks: 45089
ARIN Region origin ASes present in the Internet Routing Table: 14249
ARIN Prefixes per ASN: 7.81
ARIN Region origin ASes announcing only one prefix: 5457
ARIN Region transit ASes present in the Internet Routing Table: 1411
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: 797968640
Equivalent to 47 /8s, 144 /16s and 9 /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: 84303
Total RIPE prefixes after maximum aggregation: 47745
RIPE Deaggregation factor: 1.77
Prefixes being announced from the RIPE address blocks: 77416
Unique aggregates announced from the RIPE address blocks: 50759
RIPE Region origin ASes present in the Internet Routing Table: 15517
RIPE Prefixes per ASN: 4.99
RIPE Region origin ASes announcing only one prefix: 7795
RIPE Region transit ASes present in the Internet Routing Table: 2404
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: 466240768
Equivalent to 27 /8s, 202 /16s and 69 /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: 32101
Total LACNIC prefixes after maximum aggregation: 7339
LACNIC Deaggregation factor: 4.37
Prefixes being announced from the LACNIC address blocks: 31220
Unique aggregates announced from the LACNIC address blocks: 16445
LACNIC Region origin ASes present in the Internet Routing Table: 1430
LACNIC Prefixes per ASN: 21.83
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: 82607616
Equivalent to 4 /8s, 236 /16s and 126 /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: 7732
Total AfriNIC prefixes after maximum aggregation: 1832
AfriNIC Deaggregation factor: 4.22
Prefixes being announced from the AfriNIC address blocks: 6077
Unique aggregates announced from the AfriNIC address blocks: 1884
AfriNIC Region origin ASes present in the Internet Routing Table: 446
AfriNIC Prefixes per ASN: 13.63
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: 23356672
Equivalent to 1 /8s, 100 /16s and 101 /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 1866 9474 599 Korea Telecom (KIX)
7545 1501 300 81 TPG Internet Pty Ltd
17974 1472 470 34 PT Telekomunikasi Indonesia
4755 1444 638 166 TATA Communications formerly
24560 1138 322 203 Bharti Airtel Ltd., Telemedia
9583 1056 77 494 Sify Limited
9829 1003 868 53 National Internet Backbone
4808 947 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 3661 3822 256 BellSouth.net Inc.
4323 2646 1106 398 tw telecom holdings, inc.
1785 1791 681 128 PaeTec Communications, Inc.
18566 1707 338 239 Covad Communications Co.
6478 1629 308 38 AT&T Services, Inc.
20115 1534 1550 639 Charter Communications
19262 1495 4949 298 Verizon Online LLC
7018 1371 6963 898 AT&T Services, Inc.
22773 1298 2865 84 Cox Communications Inc.
2386 1270 536 911 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 418 7608 364 Deutsche Telekom AG
8551 407 356 39 Bezeq International
12479 405 577 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 1430 266 157 Types of queries are: POCs, o
28573 1264 988 87 Types of queries are: POCs, o
8151 1233 2669 361 Uninet S.A. de C.V.
6503 906 354 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 568 310 15 Types of queries are: POCs, o
3816 516 225 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 297 415 13 Etisalat MISR
3741 267 985 227 The Internet Solution
6713 235 215 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 3661 3822 256 BellSouth.net Inc.
4323 2646 1106 398 tw telecom holdings, inc.
23456 2248 658 1225 32-bit ASN transition
4766 1866 9474 599 Korea Telecom (KIX)
1785 1791 681 128 PaeTec Communications, Inc.
18566 1707 338 239 Covad Communications Co.
6478 1629 308 38 AT&T Services, Inc.
20115 1534 1550 639 Charter Communications
7545 1501 300 81 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 1791 1663 PaeTec Communications, Inc.
6478 1629 1591 AT&T Services, Inc.
18566 1707 1468 Covad Communications Co.
17974 1472 1438 PT Telekomunikasi Indonesia
7545 1501 1420 TPG Internet Pty Ltd
4755 1444 1278 TATA Communications formerly
10620 1430 1273 Types of queries are: POCs, o
4766 1866 1267 Korea Telecom (KIX)
11492 1263 1248 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
31.12.96.0/19 29550 Simply Transit Ltd
31.13.0.0/21 29550 Simply Transit Ltd
31.133.96.0/21 50440 RomEuro Consult SRL
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 /8:21 /9:12 /10:28 /11:77 /12:220
/13:454 /14:776 /15:1376 /16:11602 /17:5723 /18:9441
/19:19265 /20:25235 /21:25490 /22:33462 /23:32276 /24:183649
/25:11 /26:17 /27:24 /28:161 /29:94 /30:52
/31:0 /32:120
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2259 3661 BellSouth.net Inc.
18566 1681 1707 Covad Communications Co.
6478 1583 1629 AT&T Services, Inc.
4323 1343 2646 tw telecom holdings, inc.
10620 1320 1430 Types of queries are: POCs, o
11492 1212 1263 CABLE ONE, INC.
23456 1135 2248 32-bit ASN transition
7011 1062 1161 Frontier Communications of Am
1785 1058 1791 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)
----------------------------------------------
1:256 2:53 4:14 5:1 6:1 8:347
12:1999 13:1 14:426 15:15 16:3 17:8
20:9 23:5 24:1604 27:709 31:224 32:55
33:3 34:2 37:1 38:759 40:101 41:2391
42:1 44:3 46:851 47:4 49:171 50:360
52:13 55:5 56:2 57:30 58:795 59:466
60:385 61:1087 62:1004 63:1915 64:3899 65:2322
66:4336 67:1821 68:1075 69:2963 70:700 71:345
72:1907 73:1 74:2345 75:297 76:336 77:831
78:690 79:469 80:1101 81:832 82:508 83:455
84:646 85:1078 86:565 87:769 88:331 89:1585
90:181 91:3705 92:510 93:1061 94:1261 95:785
96:454 97:251 98:820 99:35 101:55 103:5
106:1 107:5 108:84 109:938 110:548 111:684
112:316 113:388 114:502 115:674 116:918 117:655
118:768 119:1137 120:290 121:648 122:1623 123:1051
124:1222 125:1251 128:212 129:159 130:166 131:562
132:104 133:20 134:210 135:49 136:211 137:139
138:301 139:101 140:463 141:174 142:382 143:390
144:482 145:53 146:437 147:204 148:580 149:233
150:161 151:187 152:305 153:179 154:2 155:394
156:188 157:326 158:132 159:375 160:316 161:235
162:276 163:154 164:486 165:348 166:511 167:427
168:719 169:153 170:779 171:76 172:1 173:1495
174:531 175:347 177:72 178:858 180:810 181:9
182:417 183:193 184:253 185:1 186:1141 187:799
188:987 189:993 190:4817 192:5740 193:4825 194:3461
195:2964 196:1207 197:16 198:3512 199:3886 200:5517
201:1495 202:8114 203:8324 204:4050 205:2307 206:2644
207:2955 208:3950 209:3474 210:2656 211:1355 212:1995
213:1716 214:738 215:67 216:4835 217:1640 218:544
219:383 220:1190 221:459 222:305 223:128
End of report
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