Routing Table Report 08:00 +10GMT Tue 14 Dec, 2010
Report Website: http://thyme.rand.apnic.net
Detailed Analysis: http://thyme.rand.apnic.net/london/
Analysis Summary
----------------
BGP routing table entries examined: 333356
Prefixes after maximum aggregation: 151888
Deaggregation factor: 2.19
Unique aggregates announced to Internet: 166483
Total ASes present in the Internet Routing Table: 35305
Prefixes per ASN: 9.44
Origin-only ASes present in the Internet Routing Table: 30531
Origin ASes announcing only one prefix: 14921
Transit ASes present in the Internet Routing Table: 4774
Transit-only ASes present in the Internet Routing Table: 105
Average AS path length visible in the Internet Routing Table: 3.6
Max AS path length visible: 26
Max AS path prepend of ASN (50912) 24
Prefixes from unregistered ASNs in the Routing Table: 852
Unregistered ASNs in the Routing Table: 335
Number of 32-bit ASNs allocated by the RIRs: 948
Prefixes from 32-bit ASNs in the Routing Table: 1427
Special use prefixes present in the Routing Table: 6
Prefixes being announced from unallocated address space: 188
Number of addresses announced to Internet: 2473670912
Equivalent to 147 /8s, 113 /16s and 57 /24s
Percentage of available address space announced: 66.7
Percentage of allocated address space announced: 68.9
Percentage of available address space allocated: 96.8
Percentage of address space in use by end-sites: 86.6
Total number of prefixes smaller than registry allocations: 135834
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 79772
Total APNIC prefixes after maximum aggregation: 27266
APNIC Deaggregation factor: 2.93
Prefixes being announced from the APNIC address blocks: 77481
Unique aggregates announced from the APNIC address blocks: 34897
APNIC Region origin ASes present in the Internet Routing Table: 4219
APNIC Prefixes per ASN: 18.36
APNIC Region origin ASes announcing only one prefix: 1216
APNIC Region transit ASes present in the Internet Routing Table: 644
Average APNIC Region AS path length visible: 4.1
Max APNIC Region AS path length visible: 21
Number of APNIC addresses announced to Internet: 574413312
Equivalent to 34 /8s, 60 /16s and 218 /24s
Percentage of available APNIC address space announced: 77.8
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: 134117
Total ARIN prefixes after maximum aggregation: 68551
ARIN Deaggregation factor: 1.96
Prefixes being announced from the ARIN address blocks: 106944
Unique aggregates announced from the ARIN address blocks: 43907
ARIN Region origin ASes present in the Internet Routing Table: 13973
ARIN Prefixes per ASN: 7.65
ARIN Region origin ASes announcing only one prefix: 5362
ARIN Region transit ASes present in the Internet Routing Table: 1401
Average ARIN Region AS path length visible: 3.3
Max ARIN Region AS path length visible: 22
Number of ARIN addresses announced to Internet: 743508224
Equivalent to 44 /8s, 81 /16s and 9 /24s
Percentage of available ARIN address space announced: 62.4
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: 79552
Total RIPE prefixes after maximum aggregation: 45401
RIPE Deaggregation factor: 1.75
Prefixes being announced from the RIPE address blocks: 73023
Unique aggregates announced from the RIPE address blocks: 47216
RIPE Region origin ASes present in the Internet Routing Table: 15132
RIPE Prefixes per ASN: 4.83
RIPE Region origin ASes announcing only one prefix: 7764
RIPE Region transit ASes present in the Internet Routing Table: 2329
Average RIPE Region AS path length visible: 3.4
Max RIPE Region AS path length visible: 26
Number of RIPE addresses announced to Internet: 450821888
Equivalent to 26 /8s, 222 /16s and 255 /24s
Percentage of available RIPE address space announced: 74.6
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, 196608-197631
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: 30289
Total LACNIC prefixes after maximum aggregation: 7071
LACNIC Deaggregation factor: 4.28
Prefixes being announced from the LACNIC address blocks: 29186
Unique aggregates announced from the LACNIC address blocks: 15446
LACNIC Region origin ASes present in the Internet Routing Table: 1390
LACNIC Prefixes per ASN: 21.00
LACNIC Region origin ASes announcing only one prefix: 443
LACNIC Region transit ASes present in the Internet Routing Table: 238
Average LACNIC Region AS path length visible: 4.0
Max LACNIC Region AS path length visible: 18
Number of LACNIC addresses announced to Internet: 78424832
Equivalent to 4 /8s, 172 /16s and 171 /24s
Percentage of available LACNIC address space announced: 58.4
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: 7530
Total AfriNIC prefixes after maximum aggregation: 1900
AfriNIC Deaggregation factor: 3.96
Prefixes being announced from the AfriNIC address blocks: 5854
Unique aggregates announced from the AfriNIC address blocks: 1751
AfriNIC Region origin ASes present in the Internet Routing Table: 424
AfriNIC Prefixes per ASN: 13.81
AfriNIC Region origin ASes announcing only one prefix: 136
AfriNIC Region transit ASes present in the Internet Routing Table: 93
Average AfriNIC Region AS path length visible: 3.4
Max AfriNIC Region AS path length visible: 17
Number of AfriNIC addresses announced to Internet: 21697024
Equivalent to 1 /8s, 75 /16s and 18 /24s
Percentage of available AfriNIC address space announced: 43.1
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 1726 9453 516 Korea Telecom (KIX)
7545 1551 298 75 TPG Internet Pty Ltd
4755 1383 633 153 TATA Communications formerly
17974 1307 459 27 PT TELEKOMUNIKASI INDONESIA
24560 1040 312 174 Bharti Airtel Ltd., Telemedia
9583 1039 75 486 Sify Limited
17488 979 158 109 Hathway IP Over Cable Interne
18101 906 116 136 Reliance Infocom Ltd Internet
4808 897 1623 252 CNCGROUP IP network: China169
9829 823 696 31 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 3736 3871 269 bellsouth.net, inc.
4323 2641 1093 401 Time Warner Telecom
19262 1833 4853 281 Verizon Global Networks
1785 1789 697 132 PaeTec Communications, Inc.
20115 1513 1531 639 Charter Communications
6478 1428 289 69 AT&T Worldnet Services
7018 1379 5687 891 AT&T WorldNet Services
2386 1309 571 926 AT&T Data Communications Serv
11492 1256 234 73 Cable One
22773 1256 2863 73 Cox Communications, Inc.
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 540 328 32 Goldenlines main autonomous s
6830 501 1763 309 UPC Distribution Services
3292 444 2010 386 TDC Tele Danmark
8866 434 133 23 Bulgarian Telecommunication C
9121 431 1690 29 TTnet Autonomous System
34984 422 92 191 BILISIM TELEKOM
9198 414 202 13 Kazakhtelecom Data Network Ad
702 404 1867 318 UUNET - Commercial IP service
8551 404 355 38 Bezeq International
12479 396 577 6 Uni2 Autonomous System
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 1342 250 155 TVCABLE BOGOTA
8151 1218 2583 363 UniNet S.A. de C.V.
28573 1190 932 79 NET Servicos de Comunicao S.A
6503 1164 355 81 AVANTEL, S.A.
7303 805 440 94 Telecom Argentina Stet-France
14420 584 49 88 ANDINATEL S.A.
22047 563 310 15 VTR PUNTO NET S.A.
3816 492 214 101 Empresa Nacional de Telecomun
7738 478 922 30 Telecomunicacoes da Bahia S.A
14117 452 32 30 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
8452 1164 445 10 TEDATA
36992 654 275 153 Etisalat MISR
24863 599 147 37 LINKdotNET AS number
3741 263 986 225 The Internet Solution
6713 203 199 12 Itissalat Al-MAGHRIB
24835 199 78 10 RAYA Telecom - Egypt
29571 199 19 11 Ci Telecom Autonomous system
2018 196 277 64 Tertiary Education Network
33776 184 12 14 Starcomms Nigeria Limited
16637 163 440 90 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 3736 3871 269 bellsouth.net, inc.
4323 2641 1093 401 Time Warner Telecom
19262 1833 4853 281 Verizon Global Networks
1785 1789 697 132 PaeTec Communications, Inc.
4766 1726 9453 516 Korea Telecom (KIX)
7545 1551 298 75 TPG Internet Pty Ltd
20115 1513 1531 639 Charter Communications
6478 1428 289 69 AT&T Worldnet Services
23456 1427 362 792 32-bit ASN transition
4755 1383 633 153 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 2641 2240 Time Warner Telecom
1785 1789 1657 PaeTec Communications, Inc.
19262 1833 1552 Verizon Global Networks
7545 1551 1476 TPG Internet Pty Ltd
6478 1428 1359 AT&T Worldnet Services
17974 1307 1280 PT TELEKOMUNIKASI INDONESIA
4755 1383 1230 TATA Communications formerly
4766 1726 1210 Korea Telecom (KIX)
10620 1342 1187 TVCABLE BOGOTA
11492 1256 1183 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
46164 UNALLOCATED 4.23.88.0/24 7018 AT&T WorldNet Servic
46164 UNALLOCATED 4.23.89.0/24 7018 AT&T WorldNet Servic
46164 UNALLOCATED 4.23.92.0/23 7018 AT&T WorldNet Servic
46164 UNALLOCATED 4.23.94.0/23 7018 AT&T WorldNet Servic
46164 UNALLOCATED 4.38.0.0/21 7018 AT&T WorldNet Servic
46164 UNALLOCATED 4.38.8.0/21 7018 AT&T WorldNet Servic
46164 UNALLOCATED 4.43.50.0/24 7018 AT&T WorldNet Servic
46164 UNALLOCATED 4.43.51.0/24 7018 AT&T WorldNet Servic
46164 UNALLOCATED 4.67.96.0/21 7018 AT&T WorldNet Servic
46164 UNALLOCATED 4.67.104.0/21 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<<
46.39.96.0/19 50821 High Performance Data Center
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 /8:28 /9:10 /10:25 /11:70 /12:213
/13:429 /14:750 /15:1341 /16:11371 /17:5491 /18:9165
/19:18694 /20:23890 /21:24034 /22:31470 /23:30458 /24:175478
/25:11 /26:17 /27:27 /28:151 /29:94 /30:39
/31:0 /32:100
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2307 3736 bellsouth.net, inc.
4323 1428 2641 Time Warner Telecom
6478 1385 1428 AT&T Worldnet Services
10620 1234 1342 TVCABLE BOGOTA
11492 1213 1256 Cable One
7011 1070 1173 Citizens Utilities
1785 1059 1789 PaeTec Communications, Inc.
8452 1051 1164 TEDATA
18566 1043 1062 Covad Communications
19262 955 1833 Verizon Global Networks
Complete listing at http://thyme.rand.apnic.net/london/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:130 2:18 4:13 5:1 8:316 12:2031
13:6 14:72 15:17 16:3 17:8 20:9
24:1424 27:483 32:58 33:6 34:2 36:1
37:1 38:709 40:101 41:2704 42:1 44:3
46:373 47:4 49:40 50:18 52:12 55:5
56:2 57:28 58:761 59:498 60:399 61:999
62:1025 63:1929 64:3691 65:2316 66:4056 67:1758
68:1003 69:2824 70:712 71:389 72:1948 74:2280
75:287 76:320 77:851 78:743 79:436 80:1053
81:797 82:514 83:447 84:632 85:1041 86:496
87:717 88:404 89:1588 90:146 91:3325 92:459
93:1025 94:1125 95:693 96:401 97:246 98:700
99:33 101:3 107:2 108:73 109:797 110:468
111:660 112:302 113:318 114:465 115:640 116:899
117:659 118:587 119:1000 120:196 121:687 122:1568
123:1018 124:1216 125:1168 128:180 129:147 130:164
131:561 132:227 133:20 134:199 135:50 136:210
137:144 138:289 139:106 140:457 141:196 142:335
143:516 144:481 145:54 146:417 147:175 148:620
149:327 150:151 151:229 152:293 153:172 154:2
155:366 156:163 157:310 158:126 159:368 160:312
161:188 162:275 163:152 164:434 165:329 166:469
167:419 168:704 169:148 170:717 171:67 172:2
173:1132 174:469 175:259 176:1 178:626 180:715
182:510 183:241 184:189 186:893 187:767 188:877
189:998 190:4249 192:5731 193:4789 194:3465 195:2878
196:1191 197:1 198:3466 199:3639 200:5485 201:1581
202:8028 203:8283 204:3972 205:2312 206:2424 207:2884
208:3853 209:3449 210:2497 211:1314 212:1891 213:1702
214:740 215:62 216:4770 217:1617 218:497 219:392
220:1185 221:399 222:312 223:80
End of report
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