Routing Table Report 08:00 +10GMT Sat 22 Jan, 2011
Report Website: http://thyme.rand.apnic.net
Detailed Analysis: http://thyme.rand.apnic.net/london/
Analysis Summary
----------------
BGP routing table entries examined: 338242
Prefixes after maximum aggregation: 153936
Deaggregation factor: 2.20
Unique aggregates announced to Internet: 169166
Total ASes present in the Internet Routing Table: 35532
Prefixes per ASN: 9.52
Origin-only ASes present in the Internet Routing Table: 30727
Origin ASes announcing only one prefix: 14949
Transit ASes present in the Internet Routing Table: 4805
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: 25
Max AS path prepend of ASN (32374) 19
Prefixes from unregistered ASNs in the Routing Table: 316
Unregistered ASNs in the Routing Table: 123
Number of 32-bit ASNs allocated by the RIRs: 1028
Prefixes from 32-bit ASNs in the Routing Table: 1593
Special use prefixes present in the Routing Table: 6
Prefixes being announced from unallocated address space: 210
Number of addresses announced to Internet: 2476395776
Equivalent to 147 /8s, 154 /16s and 205 /24s
Percentage of available address space announced: 66.8
Percentage of allocated address space announced: 69.0
Percentage of available address space allocated: 96.8
Percentage of address space in use by end-sites: 87.7
Total number of prefixes smaller than registry allocations: 137919
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 81429
Total APNIC prefixes after maximum aggregation: 27717
APNIC Deaggregation factor: 2.94
Prefixes being announced from the APNIC address blocks: 79056
Unique aggregates announced from the APNIC address blocks: 35402
APNIC Region origin ASes present in the Internet Routing Table: 4249
APNIC Prefixes per ASN: 18.61
APNIC Region origin ASes announcing only one prefix: 1221
APNIC Region transit ASes present in the Internet Routing Table: 653
Average APNIC Region AS path length visible: 4.2
Max APNIC Region AS path length visible: 21
Number of APNIC addresses announced to Internet: 582037504
Equivalent to 34 /8s, 177 /16s and 48 /24s
Percentage of available APNIC address space announced: 78.8
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, 42/8, 43/8, 49/8,
58/8, 59/8, 60/8, 61/8, 101/8, 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: 135136
Total ARIN prefixes after maximum aggregation: 69204
ARIN Deaggregation factor: 1.95
Prefixes being announced from the ARIN address blocks: 107963
Unique aggregates announced from the ARIN address blocks: 44345
ARIN Region origin ASes present in the Internet Routing Table: 14053
ARIN Prefixes per ASN: 7.68
ARIN Region origin ASes announcing only one prefix: 5378
ARIN Region transit ASes present in the Internet Routing Table: 1399
Average ARIN Region AS path length visible: 3.3
Max ARIN Region AS path length visible: 22
Number of ARIN addresses announced to Internet: 745918464
Equivalent to 44 /8s, 117 /16s and 208 /24s
Percentage of available ARIN address space announced: 62.6
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, 47/8, 48/8, 50/8, 52/8, 54/8,
55/8, 56/8, 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,
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: 80980
Total RIPE prefixes after maximum aggregation: 46018
RIPE Deaggregation factor: 1.76
Prefixes being announced from the RIPE address blocks: 74384
Unique aggregates announced from the RIPE address blocks: 48131
RIPE Region origin ASes present in the Internet Routing Table: 15220
RIPE Prefixes per ASN: 4.89
RIPE Region origin ASes announcing only one prefix: 7775
RIPE Region transit ASes present in the Internet Routing Table: 2357
Average RIPE Region AS path length visible: 3.5
Max RIPE Region AS path length visible: 25
Number of RIPE addresses announced to Internet: 456110336
Equivalent to 27 /8s, 47 /16s and 177 /24s
Percentage of available RIPE address space announced: 75.5
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, 193/8, 194/8, 195/8, 212/8, 213/8,
217/8,
LACNIC Region Analysis Summary
------------------------------
Prefixes being announced by LACNIC Region ASes: 30970
Total LACNIC prefixes after maximum aggregation: 7149
LACNIC Deaggregation factor: 4.33
Prefixes being announced from the LACNIC address blocks: 29921
Unique aggregates announced from the LACNIC address blocks: 15729
LACNIC Region origin ASes present in the Internet Routing Table: 1409
LACNIC Prefixes per ASN: 21.24
LACNIC Region origin ASes announcing only one prefix: 438
LACNIC Region transit ASes present in the Internet Routing Table: 240
Average LACNIC Region AS path length visible: 4.0
Max LACNIC Region AS path length visible: 18
Number of LACNIC addresses announced to Internet: 79610112
Equivalent to 4 /8s, 190 /16s and 193 /24s
Percentage of available LACNIC address space announced: 59.3
LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247,
262144-263167 plus ERX transfers
LACNIC Address Blocks 177/8, 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: 7452
Total AfriNIC prefixes after maximum aggregation: 1974
AfriNIC Deaggregation factor: 3.78
Prefixes being announced from the AfriNIC address blocks: 5764
Unique aggregates announced from the AfriNIC address blocks: 1899
AfriNIC Region origin ASes present in the Internet Routing Table: 433
AfriNIC Prefixes per ASN: 13.31
AfriNIC Region origin ASes announcing only one prefix: 137
AfriNIC Region transit ASes present in the Internet Routing Table: 95
Average AfriNIC Region AS path length visible: 3.4
Max AfriNIC Region AS path length visible: 17
Number of AfriNIC addresses announced to Internet: 21735424
Equivalent to 1 /8s, 75 /16s and 168 /24s
Percentage of available AfriNIC address space announced: 43.2
AfriNIC AS Blocks 36864-37887, 327680-328703 & ERX transfers
AfriNIC Address Blocks 41/8, 105/8, 197/8,
APNIC Region per AS prefix count summary
----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
4766 1757 9484 513 Korea Telecom (KIX)
7545 1571 299 79 TPG Internet Pty Ltd
4755 1399 636 160 TATA Communications formerly
17974 1385 459 28 PT TELEKOMUNIKASI INDONESIA
24560 1095 317 181 Bharti Airtel Ltd., Telemedia
9583 1038 76 485 Sify Limited
17488 949 162 103 Hathway IP Over Cable Interne
4808 920 2012 264 CNCGROUP IP network: China169
18101 918 116 138 Reliance Infocom Ltd Internet
9829 862 729 48 BSNL National Internet Backbo
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 3710 3855 267 bellsouth.net, inc.
4323 2646 1093 404 Time Warner Telecom
19262 1839 4943 283 Verizon Global Networks
1785 1792 697 132 PaeTec Communications, Inc.
20115 1523 1529 643 Charter Communications
6478 1465 290 89 AT&T Worldnet Services
7018 1385 5684 897 AT&T WorldNet Services
2386 1300 554 935 AT&T Data Communications Serv
22773 1274 2864 77 Cox Communications, Inc.
11492 1256 234 78 Cable One
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
6830 499 1763 305 UPC Distribution Services
9116 488 328 31 Goldenlines main autonomous s
9198 462 266 14 Kazakhtelecom Data Network Ad
34984 457 97 137 BILISIM TELEKOM
3292 444 2010 387 TDC Tele Danmark
8866 438 133 23 Bulgarian Telecommunication C
8551 404 355 38 Bezeq International
702 403 1835 316 UUNET - Commercial IP service
12479 403 577 6 Uni2 Autonomous System
3320 397 7616 347 Deutsche Telekom AG
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 1355 251 165 TVCABLE BOGOTA
28573 1225 954 80 NET Servicos de Comunicao S.A
8151 1198 2595 360 UniNet S.A. de C.V.
6503 1138 355 79 AVANTEL, S.A.
7303 863 460 103 Telecom Argentina Stet-France
14420 604 50 89 ANDINATEL S.A.
22047 567 310 15 VTR PUNTO NET S.A.
3816 497 220 98 Empresa Nacional de Telecomun
7738 478 922 30 Telecomunicacoes da Bahia S.A
14117 455 33 33 Telefonica del Sur 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
24863 752 147 37 LINKdotNET AS number
8452 744 445 11 TEDATA
36992 663 283 155 Etisalat MISR
3741 264 987 226 The Internet Solution
24835 216 78 10 RAYA Telecom - Egypt
6713 203 199 12 Itissalat Al-MAGHRIB
29571 194 19 11 Ci Telecom Autonomous system
33776 174 11 16 Starcomms Nigeria Limited
2018 167 277 64 Tertiary Education Network
16637 162 440 89 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 3710 3855 267 bellsouth.net, inc.
4323 2646 1093 404 Time Warner Telecom
19262 1839 4943 283 Verizon Global Networks
1785 1792 697 132 PaeTec Communications, Inc.
4766 1757 9484 513 Korea Telecom (KIX)
23456 1593 397 882 32-bit ASN transition
7545 1571 299 79 TPG Internet Pty Ltd
20115 1523 1529 643 Charter Communications
6478 1465 290 89 AT&T Worldnet Services
4755 1399 636 160 TATA Communications formerly
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 2242 Time Warner Telecom
1785 1792 1660 PaeTec Communications, Inc.
19262 1839 1556 Verizon Global Networks
7545 1571 1492 TPG Internet Pty Ltd
6478 1465 1376 AT&T Worldnet Services
17974 1385 1357 PT TELEKOMUNIKASI INDONESIA
4766 1757 1244 Korea Telecom (KIX)
4755 1399 1239 TATA Communications formerly
22773 1274 1197 Cox Communications, Inc.
10620 1355 1190 TVCABLE BOGOTA
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 *
16927 UNALLOCATED 12.0.252.0/23 7018 AT&T WorldNet Servic
15132 UNALLOCATED 12.9.150.0/24 7018 AT&T WorldNet Servic
32567 UNALLOCATED 12.14.170.0/24 7018 AT&T WorldNet Servic
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/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 0 *
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
5.0.0.0/16 12654 RIPE NCC RIS Project
5.1.0.0/21 12654 RIPE NCC RIS Project
5.1.24.0/24 12654 RIPE NCC RIS Project
24.129.192.0/19 7922 Continental Cablevision
37.0.0.0/16 12654 RIPE NCC RIS Project
37.1.0.0/21 12654 RIPE NCC RIS Project
37.1.24.0/24 12654 RIPE NCC RIS Project
41.222.79.0/24 36938 >>UNKNOWN<<
41.223.92.0/22 36936 >>UNKNOWN<<
46.173.0.0/19 43235 RIPE Network Coordination Cen
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 /8:27 /9:10 /10:25 /11:70 /12:215
/13:437 /14:761 /15:1359 /16:11450 /17:5585 /18:9269
/19:18843 /20:24187 /21:24420 /22:32296 /23:31174 /24:177665
/25:11 /26:17 /27:24 /28:152 /29:91 /30:43
/31:0 /32:111
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2288 3710 bellsouth.net, inc.
4323 1428 2646 Time Warner Telecom
6478 1419 1465 AT&T Worldnet Services
10620 1246 1355 TVCABLE BOGOTA
11492 1212 1256 Cable One
18566 1086 1105 Covad Communications
7011 1068 1174 Citizens Utilities
1785 1061 1792 PaeTec Communications, Inc.
19262 952 1839 Verizon Global Networks
23456 935 1593 32-bit ASN transition
Complete listing at http://thyme.rand.apnic.net/london/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:165 2:24 4:13 5:1 8:329 12:2027
13:1 14:364 15:15 16:3 17:8 20:9
23:1 24:1450 27:542 32:57 33:5 34:2
36:1 37:1 38:684 40:100 41:2289 42:1
44:3 46:524 47:5 49:138 50:56 52:12
55:7 56:2 57:26 58:765 59:481 60:389
61:1023 62:1017 63:1920 64:3727 65:2332 66:4073
67:1752 68:997 69:2879 70:718 71:392 72:1987
73:1 74:2294 75:291 76:327 77:852 78:708
79:435 80:1030 81:813 82:533 83:459 84:642
85:1044 86:525 87:740 88:350 89:1565 90:154
91:3423 92:493 93:1053 94:1151 95:763 96:408
97:249 98:749 99:33 101:18 107:3 108:79
109:849 110:464 111:696 112:301 113:365 114:469
115:625 116:871 117:669 118:630 119:1024 120:238
121:684 122:1601 123:1043 124:1225 125:1210 128:195
129:151 130:165 131:564 132:103 133:20 134:209
135:50 136:213 137:143 138:292 139:125 140:462
141:198 142:344 143:377 144:482 145:52 146:417
147:194 148:607 149:272 150:150 151:231 152:300
153:175 154:2 155:345 156:170 157:312 158:126
159:369 160:313 161:190 162:277 163:149 164:469
165:332 166:602 167:421 168:726 169:148 170:741
171:69 172:2 173:1247 174:554 175:305 176:1
177:4 178:748 180:749 182:379 183:249 184:205
186:955 187:809 188:907 189:1028 190:4325 192:5731
193:4772 194:3488 195:2921 196:1247 197:2 198:3473
199:3719 200:5578 201:1571 202:8047 203:8333 204:4009
205:2314 206:2427 207:2891 208:3858 209:3437 210:2582
211:1325 212:1876 213:1723 214:740 215:62 216:4816
217:1623 218:523 219:371 220:1190 221:429 222:315
223:87
End of report
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