Routing Table Report 08:00 +10GMT Fri 21 Jan, 2011
Report Website: http://thyme.rand.apnic.net
Detailed Analysis: http://thyme.rand.apnic.net/london/
Analysis Summary
----------------
BGP routing table entries examined: 338028
Prefixes after maximum aggregation: 153864
Deaggregation factor: 2.20
Unique aggregates announced to Internet: 169048
Total ASes present in the Internet Routing Table: 35520
Prefixes per ASN: 9.52
Origin-only ASes present in the Internet Routing Table: 30724
Origin ASes announcing only one prefix: 14943
Transit ASes present in the Internet Routing Table: 4796
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: 320
Unregistered ASNs in the Routing Table: 125
Number of 32-bit ASNs allocated by the RIRs: 1026
Prefixes from 32-bit ASNs in the Routing Table: 1583
Special use prefixes present in the Routing Table: 6
Prefixes being announced from unallocated address space: 213
Number of addresses announced to Internet: 2574124032
Equivalent to 153 /8s, 110 /16s and 4 /24s
Percentage of available address space announced: 69.4
Percentage of allocated address space announced: 71.7
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: 137847
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 81331
Total APNIC prefixes after maximum aggregation: 27711
APNIC Deaggregation factor: 2.93
Prefixes being announced from the APNIC address blocks: 78958
Unique aggregates announced from the APNIC address blocks: 35373
APNIC Region origin ASes present in the Internet Routing Table: 4247
APNIC Prefixes per ASN: 18.59
APNIC Region origin ASes announcing only one prefix: 1222
APNIC Region transit ASes present in the Internet Routing Table: 652
Average APNIC Region AS path length visible: 4.2
Max APNIC Region AS path length visible: 21
Number of APNIC addresses announced to Internet: 580667392
Equivalent to 34 /8s, 156 /16s and 72 /24s
Percentage of available APNIC address space announced: 78.7
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: 135145
Total ARIN prefixes after maximum aggregation: 69154
ARIN Deaggregation factor: 1.95
Prefixes being announced from the ARIN address blocks: 107914
Unique aggregates announced from the ARIN address blocks: 44324
ARIN Region origin ASes present in the Internet Routing Table: 14051
ARIN Prefixes per ASN: 7.68
ARIN Region origin ASes announcing only one prefix: 5382
ARIN Region transit ASes present in the Internet Routing Table: 1396
Average ARIN Region AS path length visible: 3.3
Max ARIN Region AS path length visible: 22
Number of ARIN addresses announced to Internet: 778543616
Equivalent to 46 /8s, 103 /16s and 162 /24s
Percentage of available ARIN address space announced: 65.4
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, 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: 80917
Total RIPE prefixes after maximum aggregation: 46001
RIPE Deaggregation factor: 1.76
Prefixes being announced from the RIPE address blocks: 74324
Unique aggregates announced from the RIPE address blocks: 48091
RIPE Region origin ASes present in the Internet Routing Table: 15213
RIPE Prefixes per ASN: 4.89
RIPE Region origin ASes announcing only one prefix: 7768
RIPE Region transit ASes present in the Internet Routing Table: 2358
Average RIPE Region AS path length visible: 3.4
Max RIPE Region AS path length visible: 25
Number of RIPE addresses announced to Internet: 455730432
Equivalent to 27 /8s, 41 /16s and 229 /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: 30926
Total LACNIC prefixes after maximum aggregation: 7152
LACNIC Deaggregation factor: 4.32
Prefixes being announced from the LACNIC address blocks: 29873
Unique aggregates announced from the LACNIC address blocks: 15731
LACNIC Region origin ASes present in the Internet Routing Table: 1406
LACNIC Prefixes per ASN: 21.25
LACNIC Region origin ASes announcing only one prefix: 435
LACNIC Region transit ASes present in the Internet Routing Table: 236
Average LACNIC Region AS path length visible: 4.0
Max LACNIC Region AS path length visible: 18
Number of LACNIC addresses announced to Internet: 79583488
Equivalent to 4 /8s, 190 /16s and 89 /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: 7439
Total AfriNIC prefixes after maximum aggregation: 1981
AfriNIC Deaggregation factor: 3.76
Prefixes being announced from the AfriNIC address blocks: 5757
Unique aggregates announced from the AfriNIC address blocks: 1877
AfriNIC Region origin ASes present in the Internet Routing Table: 434
AfriNIC Prefixes per ASN: 13.26
AfriNIC Region origin ASes announcing only one prefix: 136
AfriNIC Region transit ASes present in the Internet Routing Table: 94
Average AfriNIC Region AS path length visible: 3.4
Max AfriNIC Region AS path length visible: 17
Number of AfriNIC addresses announced to Internet: 21745920
Equivalent to 1 /8s, 75 /16s and 209 /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 1755 9484 512 Korea Telecom (KIX)
7545 1566 298 75 TPG Internet Pty Ltd
4755 1398 636 160 TATA Communications formerly
17974 1380 459 28 PT TELEKOMUNIKASI INDONESIA
24560 1095 317 181 Bharti Airtel Ltd., Telemedia
9583 1037 76 486 Sify Limited
17488 949 162 103 Hathway IP Over Cable Interne
4808 920 2012 264 CNCGROUP IP network: China169
18101 917 116 138 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 1791 697 132 PaeTec Communications, Inc.
20115 1525 1530 641 Charter Communications
6478 1464 291 54 AT&T Worldnet Services
7018 1365 5683 893 AT&T WorldNet Services
2386 1300 554 935 AT&T Data Communications Serv
22773 1275 2864 77 Cox Communications, Inc.
11492 1269 234 76 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 460 266 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
12479 404 577 6 Uni2 Autonomous System
702 402 1835 315 UUNET - Commercial IP service
3320 400 7616 349 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 1353 251 165 TVCABLE BOGOTA
28573 1224 954 80 NET Servicos de Comunicao S.A
8151 1198 2595 360 UniNet S.A. de C.V.
6503 1136 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 496 220 103 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 646 281 156 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 176 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 1791 697 132 PaeTec Communications, Inc.
4766 1755 9484 512 Korea Telecom (KIX)
23456 1583 394 877 32-bit ASN transition
7545 1566 298 75 TPG Internet Pty Ltd
20115 1525 1530 641 Charter Communications
6478 1464 291 54 AT&T Worldnet Services
4755 1398 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 1791 1659 PaeTec Communications, Inc.
19262 1839 1556 Verizon Global Networks
7545 1566 1491 TPG Internet Pty Ltd
6478 1464 1410 AT&T Worldnet Services
17974 1380 1352 PT TELEKOMUNIKASI INDONESIA
4766 1755 1243 Korea Telecom (KIX)
4755 1398 1238 TATA Communications formerly
22773 1275 1198 Cox Communications, Inc.
11492 1269 1193 Cable One
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
5.0.0.0/8 237 Merit Network
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
37.0.0.0/8 237 Merit Network
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<<
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 /8:33 /9:10 /10:25 /11:70 /12:214
/13:437 /14:759 /15:1353 /16:11453 /17:5585 /18:9269
/19:18849 /20:24163 /21:24385 /22:32274 /23:31169 /24:177529
/25:11 /26:17 /27:25 /28:151 /29:95 /30:43
/31:0 /32:109
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2288 3710 bellsouth.net, inc.
4323 1427 2646 Time Warner Telecom
6478 1418 1464 AT&T Worldnet Services
10620 1244 1353 TVCABLE BOGOTA
11492 1225 1269 Cable One
18566 1086 1105 Covad Communications
7011 1068 1171 Citizens Utilities
1785 1060 1791 PaeTec Communications, Inc.
19262 952 1839 Verizon Global Networks
23456 931 1583 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 2:26 4:13 5:1 8:327 12:2027
13:6 14:349 15:15 16:3 17:8 20:9
23:1 24:1453 27:537 32:57 33:5 34:2
36:1 37:1 38:685 40:101 41:2287 42:1
44:3 46:520 47:5 49:137 50:51 52:12
55:8 56:2 57:28 58:764 59:482 60:389
61:1023 62:1015 63:1920 64:3727 65:2338 66:4092
67:1752 68:998 69:2876 70:719 71:392 72:1989
73:1 74:2294 75:291 76:327 77:853 78:701
79:434 80:1036 81:815 82:532 83:458 84:637
85:1044 86:526 87:741 88:350 89:1560 90:154
91:3419 92:489 93:1049 94:1149 95:760 96:407
97:249 98:752 99:33 101:21 107:3 108:79
109:850 110:460 111:675 112:301 113:363 114:470
115:623 116:873 117:668 118:632 119:1032 120:238
121:683 122:1598 123:1042 124:1241 125:1211 128:195
129:151 130:165 131:564 132:103 133:20 134:209
135:50 136:213 137:143 138:292 139:125 140:461
141:198 142:343 143:379 144:482 145:51 146:417
147:191 148:606 149:304 150:152 151:230 152:300
153:175 154:2 155:346 156:170 157:312 158:126
159:369 160:313 161:191 162:277 163:149 164:469
165:332 166:600 167:421 168:723 169:148 170:741
171:69 172:2 173:1237 174:505 175:305 176:1
177:4 178:742 180:746 182:379 183:245 184:203
186:931 187:801 188:905 189:1027 190:4343 192:5733
193:4779 194:3489 195:2928 196:1248 197:2 198:3474
199:3713 200:5561 201:1569 202:8034 203:8326 204:3980
205:2313 206:2428 207:2895 208:3860 209:3438 210:2578
211:1326 212:1874 213:1722 214:740 215:62 216:4820
217:1625 218:522 219:371 220:1190 221:428 222:315
223:87
End of report
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