Routing Table Report 08:00 +10GMT Fri 28 Jan, 2011
Report Website: http://thyme.rand.apnic.net
Detailed Analysis: http://thyme.rand.apnic.net/london/
Analysis Summary
----------------
BGP routing table entries examined: 337888
Prefixes after maximum aggregation: 154067
Deaggregation factor: 2.19
Unique aggregates announced to Internet: 169325
Total ASes present in the Internet Routing Table: 35570
Prefixes per ASN: 9.50
Origin-only ASes present in the Internet Routing Table: 30783
Origin ASes announcing only one prefix: 14950
Transit ASes present in the Internet Routing Table: 4787
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: 25
Max AS path prepend of ASN (22394) 20
Prefixes from unregistered ASNs in the Routing Table: 316
Unregistered ASNs in the Routing Table: 122
Number of 32-bit ASNs allocated by the RIRs: 1043
Prefixes from 32-bit ASNs in the Routing Table: 1606
Special use prefixes present in the Routing Table: 6
Prefixes being announced from unallocated address space: 211
Number of addresses announced to Internet: 2483672320
Equivalent to 148 /8s, 9 /16s and 213 /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: 137697
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 81531
Total APNIC prefixes after maximum aggregation: 27771
APNIC Deaggregation factor: 2.94
Prefixes being announced from the APNIC address blocks: 79153
Unique aggregates announced from the APNIC address blocks: 35467
APNIC Region origin ASes present in the Internet Routing Table: 4260
APNIC Prefixes per ASN: 18.58
APNIC Region origin ASes announcing only one prefix: 1223
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: 583969536
Equivalent to 34 /8s, 206 /16s and 171 /24s
Percentage of available APNIC address space announced: 79.1
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: 135100
Total ARIN prefixes after maximum aggregation: 69295
ARIN Deaggregation factor: 1.95
Prefixes being announced from the ARIN address blocks: 108030
Unique aggregates announced from the ARIN address blocks: 44411
ARIN Region origin ASes present in the Internet Routing Table: 14068
ARIN Prefixes per ASN: 7.68
ARIN Region origin ASes announcing only one prefix: 5385
ARIN Region transit ASes present in the Internet Routing Table: 1393
Average ARIN Region AS path length visible: 3.3
Max ARIN Region AS path length visible: 23
Number of ARIN addresses announced to Internet: 751317760
Equivalent to 44 /8s, 200 /16s and 51 /24s
Percentage of available ARIN address space announced: 63.1
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: 81048
Total RIPE prefixes after maximum aggregation: 46118
RIPE Deaggregation factor: 1.76
Prefixes being announced from the RIPE address blocks: 74472
Unique aggregates announced from the RIPE address blocks: 48313
RIPE Region origin ASes present in the Internet Routing Table: 15232
RIPE Prefixes per ASN: 4.89
RIPE Region origin ASes announcing only one prefix: 7777
RIPE Region transit ASes present in the Internet Routing Table: 2345
Average RIPE Region AS path length visible: 3.4
Max RIPE Region AS path length visible: 25
Number of RIPE addresses announced to Internet: 456803072
Equivalent to 27 /8s, 58 /16s and 67 /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: 31098
Total LACNIC prefixes after maximum aggregation: 7178
LACNIC Deaggregation factor: 4.33
Prefixes being announced from the LACNIC address blocks: 30018
Unique aggregates announced from the LACNIC address blocks: 15795
LACNIC Region origin ASes present in the Internet Routing Table: 1412
LACNIC Prefixes per ASN: 21.26
LACNIC Region origin ASes announcing only one prefix: 436
LACNIC Region transit ASes present in the Internet Routing Table: 239
Average LACNIC Region AS path length visible: 4.0
Max LACNIC Region AS path length visible: 18
Number of LACNIC addresses announced to Internet: 80158208
Equivalent to 4 /8s, 199 /16s and 30 /24s
Percentage of available LACNIC address space announced: 59.7
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: 6817
Total AfriNIC prefixes after maximum aggregation: 1811
AfriNIC Deaggregation factor: 3.76
Prefixes being announced from the AfriNIC address blocks: 5479
Unique aggregates announced from the AfriNIC address blocks: 1801
AfriNIC Region origin ASes present in the Internet Routing Table: 430
AfriNIC Prefixes per ASN: 12.74
AfriNIC Region origin ASes announcing only one prefix: 129
AfriNIC Region transit ASes present in the Internet Routing Table: 92
Average AfriNIC Region AS path length visible: 3.5
Max AfriNIC Region AS path length visible: 17
Number of AfriNIC addresses announced to Internet: 20964608
Equivalent to 1 /8s, 63 /16s and 229 /24s
Percentage of available AfriNIC address space announced: 41.7
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 1586 299 80 TPG Internet Pty Ltd
4755 1402 636 160 TATA Communications formerly
17974 1389 459 28 PT TELEKOMUNIKASI INDONESIA
24560 1094 317 180 Bharti Airtel Ltd., Telemedia
9583 1043 76 486 Sify Limited
17488 950 162 103 Hathway IP Over Cable Interne
4808 930 2012 266 CNCGROUP IP network: China169
18101 921 116 140 Reliance Infocom Ltd Internet
9829 880 746 42 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 266 bellsouth.net, inc.
4323 2628 1093 404 Time Warner Telecom
19262 1841 4943 285 Verizon Global Networks
1785 1790 698 133 PaeTec Communications, Inc.
20115 1514 1529 643 Charter Communications
6478 1474 291 72 AT&T Worldnet Services
7018 1375 6708 891 AT&T WorldNet Services
2386 1298 554 934 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 514 1764 318 UPC Distribution Services
9116 484 328 31 Goldenlines main autonomous s
9198 465 266 14 Kazakhtelecom Data Network Ad
34984 458 97 137 BILISIM TELEKOM
3292 445 2011 388 TDC Tele Danmark
8866 438 133 23 Bulgarian Telecommunication C
12479 411 577 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 1227 961 82 NET Servicos de Comunicao S.A
8151 1198 2600 352 UniNet S.A. de C.V.
6503 1138 355 79 AVANTEL, S.A.
7303 863 460 103 Telecom Argentina Stet-France
14420 611 54 88 ANDINATEL S.A.
22047 566 310 15 VTR PUNTO NET S.A.
3816 500 220 95 Empresa Nacional de Telecomun
7738 478 922 30 Telecomunicacoes da Bahia S.A
14117 456 34 31 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 810 445 11 TEDATA
24863 634 147 37 LINKdotNET AS number
36992 466 161 19 Etisalat MISR
3741 264 987 226 The Internet Solution
6713 203 199 12 Itissalat Al-MAGHRIB
33776 194 12 15 Starcomms Nigeria Limited
29571 193 17 11 Ci Telecom Autonomous system
16637 163 440 89 MTN Network Solutions
36874 139 24 6 Cybersmart
29975 131 475 17 Vodacom
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 266 bellsouth.net, inc.
4323 2628 1093 404 Time Warner Telecom
19262 1841 4943 285 Verizon Global Networks
1785 1790 698 133 PaeTec Communications, Inc.
4766 1759 9484 515 Korea Telecom (KIX)
23456 1606 396 891 32-bit ASN transition
7545 1586 299 80 TPG Internet Pty Ltd
20115 1514 1529 643 Charter Communications
6478 1474 291 72 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 2628 2224 Time Warner Telecom
1785 1790 1657 PaeTec Communications, Inc.
19262 1841 1556 Verizon Global Networks
7545 1586 1506 TPG Internet Pty Ltd
6478 1474 1402 AT&T Worldnet Services
17974 1389 1361 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
41.78.192.0/22 30999 Emtel is GSM, 3G and ISP in M
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 /8:27 /9:10 /10:26 /11:70 /12:216
/13:439 /14:762 /15:1359 /16:11442 /17:5574 /18:9233
/19:18861 /20:24217 /21:24438 /22:32366 /23:31147 /24:177246
/25:11 /26:17 /27:25 /28:153 /29:93 /30:44
/31:0 /32:112
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2288 3710 bellsouth.net, inc.
6478 1428 1474 AT&T Worldnet Services
4323 1416 2628 Time Warner Telecom
10620 1248 1357 TVCABLE BOGOTA
11492 1226 1270 Cable One
18566 1089 1108 Covad Communications
7011 1065 1168 Citizens Utilities
1785 1059 1790 PaeTec Communications, Inc.
19262 954 1841 Verizon Global Networks
23456 945 1606 32-bit ASN transition
Complete listing at http://thyme.rand.apnic.net/london/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:167 2:30 4:13 5:1 8:330 12:2030
13:1 14:356 15:15 16:3 17:8 20:9
23:1 24:1461 27:551 32:57 33:5 34:2
36:1 37:1 38:689 40:101 41:2274 42:1
44:3 46:510 47:5 49:143 50:74 52:12
55:5 56:2 57:27 58:766 59:481 60:389
61:1020 62:1005 63:1919 64:3727 65:2325 66:4056
67:1752 68:997 69:2871 70:715 71:392 72:1987
73:1 74:2299 75:281 76:329 77:852 78:706
79:435 80:1035 81:793 82:526 83:473 84:639
85:1043 86:532 87:737 88:353 89:1580 90:159
91:3428 92:493 93:1043 94:1157 95:778 96:404
97:249 98:752 99:33 101:25 107:3 108:81
109:842 110:468 111:686 112:304 113:354 114:477
115:625 116:870 117:669 118:639 119:1004 120:238
121:678 122:1601 123:1048 124:1243 125:1210 128:195
129:152 130:168 131:565 132:103 133:20 134:210
135:49 136:213 137:144 138:293 139:118 140:463
141:198 142:347 143:375 144:482 145:51 146:418
147:191 148:609 149:272 150:153 151:231 152:300
153:175 154:2 155:346 156:171 157:312 158:128
159:368 160:313 161:193 162:276 163:147 164:482
165:333 166:481 167:422 168:730 169:146 170:741
171:66 172:2 173:1262 174:517 175:311 176:1
177:4 178:761 180:751 182:385 183:251 184:207
186:961 187:791 188:900 189:1018 190:4419 192:5731
193:4782 194:3480 195:2921 196:1063 197:2 198:3469
199:3720 200:5550 201:1578 202:8053 203:8319 204:4016
205:2324 206:2434 207:2888 208:3879 209:3444 210:2579
211:1323 212:1862 213:1640 214:752 215:62 216:4799
217:1507 218:514 219:372 220:1190 221:431 222:315
223:89
End of report
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