Routing Table Report 08:00 +10GMT Wed 26 Jan, 2011
Report Website: http://thyme.rand.apnic.net
Detailed Analysis: http://thyme.rand.apnic.net/london/
Analysis Summary
----------------
BGP routing table entries examined: 338429
Prefixes after maximum aggregation: 153967
Deaggregation factor: 2.20
Unique aggregates announced to Internet: 169288
Total ASes present in the Internet Routing Table: 35557
Prefixes per ASN: 9.52
Origin-only ASes present in the Internet Routing Table: 30760
Origin ASes announcing only one prefix: 14960
Transit ASes present in the Internet Routing Table: 4797
Transit-only ASes present in the Internet Routing Table: 106
Average AS path length visible in the Internet Routing Table: 3.6
Max AS path length visible: 30
Max AS path prepend of ASN (16181) 22
Prefixes from unregistered ASNs in the Routing Table: 315
Unregistered ASNs in the Routing Table: 121
Number of 32-bit ASNs allocated by the RIRs: 1037
Prefixes from 32-bit ASNs in the Routing Table: 1603
Special use prefixes present in the Routing Table: 6
Prefixes being announced from unallocated address space: 207
Number of addresses announced to Internet: 2482675456
Equivalent to 147 /8s, 250 /16s and 159 /24s
Percentage of available address space announced: 67.0
Percentage of allocated address space announced: 69.2
Percentage of available address space allocated: 96.8
Percentage of address space in use by end-sites: 87.9
Total number of prefixes smaller than registry allocations: 138033
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 81409
Total APNIC prefixes after maximum aggregation: 27787
APNIC Deaggregation factor: 2.93
Prefixes being announced from the APNIC address blocks: 79024
Unique aggregates announced from the APNIC address blocks: 35474
APNIC Region origin ASes present in the Internet Routing Table: 4257
APNIC Prefixes per ASN: 18.56
APNIC Region origin ASes announcing only one prefix: 1224
APNIC Region transit ASes present in the Internet Routing Table: 655
Average APNIC Region AS path length visible: 4.1
Max APNIC Region AS path length visible: 21
Number of APNIC addresses announced to Internet: 583332096
Equivalent to 34 /8s, 196 /16s and 241 /24s
Percentage of available APNIC address space announced: 79.0
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: 135170
Total ARIN prefixes after maximum aggregation: 69246
ARIN Deaggregation factor: 1.95
Prefixes being announced from the ARIN address blocks: 107996
Unique aggregates announced from the ARIN address blocks: 44376
ARIN Region origin ASes present in the Internet Routing Table: 14059
ARIN Prefixes per ASN: 7.68
ARIN Region origin ASes announcing only one prefix: 5380
ARIN Region transit ASes present in the Internet Routing Table: 1390
Average ARIN Region AS path length visible: 3.3
Max ARIN Region AS path length visible: 22
Number of ARIN addresses announced to Internet: 750293760
Equivalent to 44 /8s, 184 /16s and 147 /24s
Percentage of available ARIN address space announced: 63.0
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: 81140
Total RIPE prefixes after maximum aggregation: 46079
RIPE Deaggregation factor: 1.76
Prefixes being announced from the RIPE address blocks: 74520
Unique aggregates announced from the RIPE address blocks: 48243
RIPE Region origin ASes present in the Internet Routing Table: 15240
RIPE Prefixes per ASN: 4.89
RIPE Region origin ASes announcing only one prefix: 7788
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: 30
Number of RIPE addresses announced to Internet: 456767488
Equivalent to 27 /8s, 57 /16s and 184 /24s
Percentage of available RIPE address space announced: 75.6
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, 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: 30997
Total LACNIC prefixes after maximum aggregation: 7153
LACNIC Deaggregation factor: 4.33
Prefixes being announced from the LACNIC address blocks: 29948
Unique aggregates announced from the LACNIC address blocks: 15785
LACNIC Region origin ASes present in the Internet Routing Table: 1408
LACNIC Prefixes per ASN: 21.27
LACNIC Region origin ASes announcing only one prefix: 437
LACNIC Region transit ASes present in the Internet Routing Table: 241
Average LACNIC Region AS path length visible: 4.0
Max LACNIC Region AS path length visible: 18
Number of LACNIC addresses announced to Internet: 79883008
Equivalent to 4 /8s, 194 /16s and 235 /24s
Percentage of available LACNIC address space announced: 59.5
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: 7431
Total AfriNIC prefixes after maximum aggregation: 1813
AfriNIC Deaggregation factor: 4.10
Prefixes being announced from the AfriNIC address blocks: 5780
Unique aggregates announced from the AfriNIC address blocks: 1777
AfriNIC Region origin ASes present in the Internet Routing Table: 426
AfriNIC Prefixes per ASN: 13.57
AfriNIC Region origin ASes announcing only one prefix: 131
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: 21554688
Equivalent to 1 /8s, 72 /16s and 230 /24s
Percentage of available AfriNIC address space announced: 42.8
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 1759 9484 515 Korea Telecom (KIX)
7545 1575 300 81 TPG Internet Pty Ltd
4755 1402 636 160 TATA Communications formerly
17974 1386 459 28 PT TELEKOMUNIKASI INDONESIA
24560 1095 317 181 Bharti Airtel Ltd., Telemedia
9583 1042 76 485 Sify Limited
17488 949 162 103 Hathway IP Over Cable Interne
4808 922 2012 266 CNCGROUP IP network: China169
18101 920 116 140 Reliance Infocom Ltd Internet
9829 858 729 52 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 3711 3855 267 bellsouth.net, inc.
4323 2641 1093 404 Time Warner Telecom
19262 1840 4943 284 Verizon Global Networks
1785 1793 698 133 PaeTec Communications, Inc.
20115 1526 1530 638 Charter Communications
6478 1472 291 79 AT&T Worldnet Services
7018 1383 6709 897 AT&T WorldNet Services
2386 1299 554 935 AT&T Data Communications Serv
22773 1273 2864 77 Cox Communications, Inc.
11492 1270 235 71 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 501 1763 307 UPC Distribution Services
9116 484 328 31 Goldenlines main autonomous s
9198 465 266 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
12479 407 577 6 Uni2 Autonomous System
8551 404 355 38 Bezeq International
702 401 1819 314 UUNET - Commercial IP service
3320 401 7616 350 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 1357 252 165 TVCABLE BOGOTA
28573 1229 959 82 NET Servicos de Comunicao S.A
8151 1196 2598 358 UniNet S.A. de C.V.
6503 1139 355 79 AVANTEL, S.A.
7303 863 460 103 Telecom Argentina Stet-France
14420 612 54 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
8452 778 445 11 TEDATA
24863 752 147 37 LINKdotNET AS number
36992 676 361 20 Etisalat MISR
3741 264 987 226 The Internet Solution
24835 216 78 10 RAYA Telecom - Egypt
6713 203 199 12 Itissalat Al-MAGHRIB
33776 194 12 15 Starcomms Nigeria Limited
29571 192 17 11 Ci Telecom Autonomous system
2018 167 277 64 Tertiary Education Network
16637 162 438 88 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 3711 3855 267 bellsouth.net, inc.
4323 2641 1093 404 Time Warner Telecom
19262 1840 4943 284 Verizon Global Networks
1785 1793 698 133 PaeTec Communications, Inc.
4766 1759 9484 515 Korea Telecom (KIX)
23456 1603 399 889 32-bit ASN transition
7545 1575 300 81 TPG Internet Pty Ltd
20115 1526 1530 638 Charter Communications
6478 1472 291 79 AT&T Worldnet Services
4755 1402 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 2641 2237 Time Warner Telecom
1785 1793 1660 PaeTec Communications, Inc.
19262 1840 1556 Verizon Global Networks
7545 1575 1494 TPG Internet Pty Ltd
6478 1472 1393 AT&T Worldnet Services
17974 1386 1358 PT TELEKOMUNIKASI INDONESIA
4766 1759 1244 Korea Telecom (KIX)
4755 1402 1242 TATA Communications formerly
11492 1270 1199 Cable One
22773 1273 1196 Cox Communications, 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
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
41.57.192.0/18 22750 BCSNET
41.222.79.0/24 36938 >>UNKNOWN<<
41.223.92.0/22 36936 >>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 /8:27 /9:10 /10:26 /11:70 /12:216
/13:438 /14:762 /15:1359 /16:11445 /17:5584 /18:9260
/19:18839 /20:24187 /21:24480 /22:32368 /23:31226 /24:177685
/25:11 /26:16 /27:25 /28:152 /29:91 /30:44
/31:0 /32:108
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2289 3711 bellsouth.net, inc.
4323 1427 2641 Time Warner Telecom
6478 1426 1472 AT&T Worldnet Services
10620 1248 1357 TVCABLE BOGOTA
11492 1226 1270 Cable One
18566 1085 1104 Covad Communications
7011 1068 1174 Citizens Utilities
1785 1061 1793 PaeTec Communications, Inc.
19262 953 1840 Verizon Global Networks
23456 938 1603 32-bit ASN transition
Complete listing at http://thyme.rand.apnic.net/london/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:166 2:30 4:13 5:1 8:330 12:2033
13:1 14:353 15:15 16:3 17:8 20:9
23:1 24:1454 27:543 32:57 33:5 34:2
36:1 37:1 38:690 40:101 41:2273 42:1
44:3 46:517 47:5 49:142 50:56 52:12
55:6 56:2 57:27 58:765 59:481 60:389
61:1020 62:1020 63:1917 64:3732 65:2330 66:4067
67:1752 68:996 69:2879 70:716 71:392 72:1992
73:1 74:2293 75:292 76:330 77:850 78:708
79:436 80:1039 81:790 82:534 83:461 84:642
85:1046 86:530 87:740 88:353 89:1565 90:157
91:3431 92:490 93:1051 94:1155 95:775 96:408
97:248 98:754 99:33 101:25 107:3 108:80
109:848 110:468 111:684 112:295 113:357 114:472
115:625 116:871 117:669 118:636 119:1001 120:239
121:687 122:1591 123:1044 124:1244 125:1212 128:195
129:151 130:168 131:565 132:103 133:20 134:210
135:49 136:213 137:143 138:293 139:117 140:463
141:198 142:347 143:381 144:483 145:51 146:417
147:193 148:607 149:272 150:151 151:229 152:300
153:175 154:2 155:346 156:170 157:312 158:126
159:369 160:313 161:192 162:276 163:146 164:469
165:332 166:600 167:422 168:723 169:148 170:741
171:68 172:2 173:1248 174:514 175:308 176:1
177:4 178:756 180:754 182:385 183:249 184:207
186:957 187:786 188:908 189:1035 190:4334 192:5731
193:4779 194:3489 195:2935 196:1232 197:2 198:3472
199:3720 200:5578 201:1571 202:8061 203:8306 204:4012
205:2314 206:2433 207:2888 208:3869 209:3444 210:2579
211:1325 212:1891 213:1718 214:756 215:62 216:4810
217:1626 218:516 219:372 220:1190 221:430 222:316
223:89
End of report
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