Routing Table Report 08:00 +10GMT Thu 20 Jan, 2011
Report Website: http://thyme.rand.apnic.net
Detailed Analysis: http://thyme.rand.apnic.net/london/
Analysis Summary
----------------
BGP routing table entries examined: 337905
Prefixes after maximum aggregation: 153820
Deaggregation factor: 2.20
Unique aggregates announced to Internet: 168983
Total ASes present in the Internet Routing Table: 35512
Prefixes per ASN: 9.52
Origin-only ASes present in the Internet Routing Table: 30721
Origin ASes announcing only one prefix: 14941
Transit ASes present in the Internet Routing Table: 4791
Transit-only ASes present in the Internet Routing Table: 109
Average AS path length visible in the Internet Routing Table: 3.6
Max AS path length visible: 31
Max AS path prepend of ASN (36992) 29
Prefixes from unregistered ASNs in the Routing Table: 321
Unregistered ASNs in the Routing Table: 124
Number of 32-bit ASNs allocated by the RIRs: 1020
Prefixes from 32-bit ASNs in the Routing Table: 1574
Special use prefixes present in the Routing Table: 6
Prefixes being announced from unallocated address space: 231
Number of addresses announced to Internet: 2573489152
Equivalent to 153 /8s, 100 /16s and 84 /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: 137704
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 81416
Total APNIC prefixes after maximum aggregation: 27707
APNIC Deaggregation factor: 2.94
Prefixes being announced from the APNIC address blocks: 79050
Unique aggregates announced from the APNIC address blocks: 35380
APNIC Region origin ASes present in the Internet Routing Table: 4250
APNIC Prefixes per ASN: 18.60
APNIC Region origin ASes announcing only one prefix: 1223
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: 580697856
Equivalent to 34 /8s, 156 /16s and 191 /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: 135153
Total ARIN prefixes after maximum aggregation: 69163
ARIN Deaggregation factor: 1.95
Prefixes being announced from the ARIN address blocks: 107947
Unique aggregates announced from the ARIN address blocks: 44316
ARIN Region origin ASes present in the Internet Routing Table: 14050
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: 778478336
Equivalent to 46 /8s, 102 /16s and 163 /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: 80854
Total RIPE prefixes after maximum aggregation: 45969
RIPE Deaggregation factor: 1.76
Prefixes being announced from the RIPE address blocks: 74257
Unique aggregates announced from the RIPE address blocks: 48057
RIPE Region origin ASes present in the Internet Routing Table: 15205
RIPE Prefixes per ASN: 4.88
RIPE Region origin ASes announcing only one prefix: 7766
RIPE Region transit ASes present in the Internet Routing Table: 2349
Average RIPE Region AS path length visible: 3.4
Max RIPE Region AS path length visible: 25
Number of RIPE addresses announced to Internet: 455517184
Equivalent to 27 /8s, 38 /16s and 164 /24s
Percentage of available RIPE address space announced: 75.4
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: 30851
Total LACNIC prefixes after maximum aggregation: 7150
LACNIC Deaggregation factor: 4.31
Prefixes being announced from the LACNIC address blocks: 29768
Unique aggregates announced from the LACNIC address blocks: 15700
LACNIC Region origin ASes present in the Internet Routing Table: 1403
LACNIC Prefixes per ASN: 21.22
LACNIC Region origin ASes announcing only one prefix: 434
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: 79138816
Equivalent to 4 /8s, 183 /16s and 144 /24s
Percentage of available LACNIC address space announced: 59.0
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: 7367
Total AfriNIC prefixes after maximum aggregation: 1973
AfriNIC Deaggregation factor: 3.73
Prefixes being announced from the AfriNIC address blocks: 5694
Unique aggregates announced from the AfriNIC address blocks: 1851
AfriNIC Region origin ASes present in the Internet Routing Table: 433
AfriNIC Prefixes per ASN: 13.15
AfriNIC Region origin ASes announcing only one prefix: 136
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: 31
Number of AfriNIC addresses announced to Internet: 21747456
Equivalent to 1 /8s, 75 /16s and 215 /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 1565 298 75 TPG Internet Pty Ltd
17974 1413 459 28 PT TELEKOMUNIKASI INDONESIA
4755 1398 636 160 TATA Communications formerly
24560 1095 317 181 Bharti Airtel Ltd., Telemedia
9583 1040 76 486 Sify Limited
17488 949 162 103 Hathway IP Over Cable Interne
4808 921 2012 264 CNCGROUP IP network: China169
18101 915 116 138 Reliance Infocom Ltd Internet
9829 861 728 47 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 2647 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 1457 289 65 AT&T Worldnet Services
7018 1388 5685 900 AT&T WorldNet Services
2386 1300 554 935 AT&T Data Communications Serv
22773 1274 2864 77 Cox Communications, Inc.
11492 1266 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 460 266 14 Kazakhtelecom Data Network Ad
34984 457 97 137 BILISIM TELEKOM
3292 443 2010 386 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 399 7616 348 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 1349 251 165 TVCABLE BOGOTA
28573 1205 951 85 NET Servicos de Comunicao S.A
8151 1196 2593 359 UniNet S.A. de C.V.
6503 1135 355 80 AVANTEL, S.A.
7303 862 460 102 Telecom Argentina Stet-France
14420 604 50 89 ANDINATEL S.A.
22047 564 310 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 751 147 37 LINKdotNET AS number
8452 743 445 11 TEDATA
36992 635 281 155 Etisalat MISR
3741 264 987 226 The Internet Solution
24835 215 78 10 RAYA Telecom - Egypt
6713 203 199 12 Itissalat Al-MAGHRIB
29571 194 19 11 Ci Telecom Autonomous system
33776 184 12 14 Starcomms Nigeria Limited
2018 166 277 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 2647 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 1574 392 873 32-bit ASN transition
7545 1565 298 75 TPG Internet Pty Ltd
20115 1525 1530 641 Charter Communications
6478 1457 289 65 AT&T Worldnet Services
17974 1413 459 28 PT TELEKOMUNIKASI INDONESIA
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 2647 2243 Time Warner Telecom
1785 1791 1659 PaeTec Communications, Inc.
19262 1839 1556 Verizon Global Networks
7545 1565 1490 TPG Internet Pty Ltd
6478 1457 1392 AT&T Worldnet Services
17974 1413 1385 PT TELEKOMUNIKASI INDONESIA
4766 1755 1243 Korea Telecom (KIX)
4755 1398 1238 TATA Communications formerly
22773 1274 1197 Cox Communications, Inc.
11492 1266 1188 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 /14:758 /15:1352 /16:11454 /17:5582 /18:9261
/19:18846 /20:24167 /21:24361 /22:32243 /23:31143 /24:177496
/25:11 /26:17 /27:25 /28:152 /29:94 /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 2647 Time Warner Telecom
6478 1413 1457 AT&T Worldnet Services
10620 1240 1349 TVCABLE BOGOTA
11492 1222 1266 Cable One
18566 1085 1104 Covad Communications
7011 1068 1171 Citizens Utilities
1785 1060 1791 PaeTec Communications, Inc.
19262 952 1839 Verizon Global Networks
6503 921 1135 AVANTEL, S.A.
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 8:327 12:2029
13:6 14:343 15:15 16:3 17:8 20:9
23:1 24:1452 27:535 32:57 33:5 34:2
36:1 37:1 38:684 40:101 41:2260 42:1
44:3 46:504 47:5 49:136 50:49 52:12
55:6 56:2 57:28 58:763 59:481 60:389
61:1023 62:1016 63:1916 64:3727 65:2339 66:4091
67:1752 68:999 69:2879 70:716 71:390 72:1990
73:1 74:2295 75:291 76:327 77:853 78:704
79:435 80:1026 81:815 82:533 83:460 84:637
85:1042 86:524 87:742 88:350 89:1559 90:153
91:3415 92:491 93:1038 94:1155 95:757 96:408
97:248 98:753 99:33 101:18 107:3 108:79
109:845 110:463 111:681 112:300 113:365 114:470
115:624 116:870 117:669 118:632 119:1030 120:237
121:684 122:1599 123:1048 124:1241 125:1212 128:195
129:151 130:166 131:562 132:103 133:20 134:209
135:50 136:213 137:143 138:292 139:127 140:462
141:198 142:345 143:381 144:487 145:51 146:417
147:196 148:607 149:300 150:152 151:230 152:298
153:175 154:2 155:346 156:170 157:311 158:126
159:369 160:313 161:191 162:277 163:150 164:469
165:332 166:600 167:421 168:720 169:148 170:739
171:69 172:2 173:1237 174:505 175:305 176:1
177:4 178:743 180:744 182:377 183:252 184:203
186:930 187:783 188:904 189:1032 190:4329 192:5730
193:4777 194:3486 195:2911 196:1245 197:2 198:3474
199:3707 200:5576 201:1566 202:8039 203:8332 204:3998
205:2311 206:2429 207:2897 208:3863 209:3454 210:2578
211:1331 212:1880 213:1721 214:751 215:62 216:4821
217:1628 218:520 219:381 220:1189 221:429 222:315
223:85
End of report
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