Routing Table Report 08:00 +10GMT Wed 21 Mar, 2012
Report Website: http://thyme.rand.apnic.net
Detailed Analysis: http://thyme.rand.apnic.net/london/
Analysis Summary
----------------
BGP routing table entries examined: 395121
Prefixes after maximum aggregation: 169029
Deaggregation factor: 2.34
Unique aggregates announced to Internet: 194749
Total ASes present in the Internet Routing Table: 38179
Prefixes per ASN: 10.35
Origin-only ASes present in the Internet Routing Table: 32916
Origin ASes announcing only one prefix: 15516
Transit ASes present in the Internet Routing Table: 5263
Transit-only ASes present in the Internet Routing Table: 123
Average AS path length visible in the Internet Routing Table: 3.6
Max AS path length visible: 26
Max AS path prepend of ASN (51742) 24
Prefixes from unregistered ASNs in the Routing Table: 1315
Unregistered ASNs in the Routing Table: 298
Number of 32-bit ASNs allocated by the RIRs: 2323
Number of 32-bit ASNs visible in the Routing Table: 0
Prefixes from 32-bit ASNs in the Routing Table: 5104
Special use prefixes present in the Routing Table: 8
Prefixes being announced from unallocated address space: 801
Number of addresses announced to Internet: 2544569088
Equivalent to 151 /8s, 171 /16s and 11 /24s
Percentage of available address space announced: 68.7
Percentage of allocated address space announced: 68.7
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 92.1
Total number of prefixes smaller than registry allocations: 166356
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 92806
Total APNIC prefixes after maximum aggregation: 30521
APNIC Deaggregation factor: 3.04
Prefixes being announced from the APNIC address blocks: 90217
Unique aggregates announced from the APNIC address blocks: 39231
APNIC Region origin ASes present in the Internet Routing Table: 4625
APNIC Prefixes per ASN: 19.51
APNIC Region origin ASes announcing only one prefix: 1255
APNIC Region transit ASes present in the Internet Routing Table: 699
Average APNIC Region AS path length visible: 4.0
Max APNIC Region AS path length visible: 17
Number of APNIC region 32-bit ASNs visible in the Routing Table: 0
Number of APNIC addresses announced to Internet: 640733440
Equivalent to 38 /8s, 48 /16s and 209 /24s
Percentage of available APNIC address space announced: 81.3
APNIC AS Blocks 4608-4864, 7467-7722, 9216-10239, 17408-18431
(pre-ERX allocations) 23552-24575, 37888-38911, 45056-46079, 55296-56319,
58368-59391, 131072-132095, 132096-133119
APNIC Address Blocks 1/8, 14/8, 27/8, 36/8, 39/8, 42/8, 43/8,
49/8, 58/8, 59/8, 60/8, 61/8, 101/8, 103/8,
106/8, 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: 147538
Total ARIN prefixes after maximum aggregation: 75277
ARIN Deaggregation factor: 1.96
Prefixes being announced from the ARIN address blocks: 119341
Unique aggregates announced from the ARIN address blocks: 49839
ARIN Region origin ASes present in the Internet Routing Table: 14879
ARIN Prefixes per ASN: 8.02
ARIN Region origin ASes announcing only one prefix: 5671
ARIN Region transit ASes present in the Internet Routing Table: 1507
Average ARIN Region AS path length visible: 3.3
Max ARIN Region AS path length visible: 16
Number of ARIN region 32-bit ASNs visible in the Routing Table: 0
Number of ARIN addresses announced to Internet: 806651648
Equivalent to 48 /8s, 20 /16s and 135 /24s
Percentage of available ARIN address space announced: 64.1
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, 45/8, 47/8, 48/8, 50/8, 52/8,
53/8, 54/8, 55/8, 56/8, 57/8, 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, 104/8, 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: 101428
Total RIPE prefixes after maximum aggregation: 52997
RIPE Deaggregation factor: 1.91
Prefixes being announced from the RIPE address blocks: 92877
Unique aggregates announced from the RIPE address blocks: 57056
RIPE Region origin ASes present in the Internet Routing Table: 16347
RIPE Prefixes per ASN: 5.68
RIPE Region origin ASes announcing only one prefix: 7989
RIPE Region transit ASes present in the Internet Routing Table: 2593
Average RIPE Region AS path length visible: 3.5
Max RIPE Region AS path length visible: 26
Number of RIPE region 32-bit ASNs visible in the Routing Table: 0
Number of RIPE addresses announced to Internet: 502102016
Equivalent to 29 /8s, 237 /16s and 120 /24s
Percentage of available RIPE address space announced: 80.9
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, 185/8, 193/8, 194/8, 195/8, 212/8,
213/8, 217/8,
LACNIC Region Analysis Summary
------------------------------
Prefixes being announced by LACNIC Region ASes: 38413
Total LACNIC prefixes after maximum aggregation: 7965
LACNIC Deaggregation factor: 4.82
Prefixes being announced from the LACNIC address blocks: 38336
Unique aggregates announced from the LACNIC address blocks: 19622
LACNIC Region origin ASes present in the Internet Routing Table: 1560
LACNIC Prefixes per ASN: 24.57
LACNIC Region origin ASes announcing only one prefix: 435
LACNIC Region transit ASes present in the Internet Routing Table: 284
Average LACNIC Region AS path length visible: 4.0
Max LACNIC Region AS path length visible: 17
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 0
Number of LACNIC addresses announced to Internet: 98383616
Equivalent to 5 /8s, 221 /16s and 55 /24s
Percentage of available LACNIC address space announced: 65.2
LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247,
262144-263167 plus ERX transfers
LACNIC Address Blocks 177/8, 179/8, 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: 8890
Total AfriNIC prefixes after maximum aggregation: 2101
AfriNIC Deaggregation factor: 4.23
Prefixes being announced from the AfriNIC address blocks: 7002
Unique aggregates announced from the AfriNIC address blocks: 2181
AfriNIC Region origin ASes present in the Internet Routing Table: 520
AfriNIC Prefixes per ASN: 13.47
AfriNIC Region origin ASes announcing only one prefix: 166
AfriNIC Region transit ASes present in the Internet Routing Table: 116
Average AfriNIC Region AS path length visible: 3.6
Max AfriNIC Region AS path length visible: 24
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 0
Number of AfriNIC addresses announced to Internet: 31488000
Equivalent to 1 /8s, 224 /16s and 120 /24s
Percentage of available AfriNIC address space announced: 46.9
AfriNIC AS Blocks 36864-37887, 327680-328703 & ERX transfers
AfriNIC Address Blocks 41/8, 102/8, 105/8, 197/8,
APNIC Region per AS prefix count summary
----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
4766 1936 11107 684 Korea Telecom (KIX)
17974 1662 500 62 PT Telekomunikasi Indonesia
7545 1651 303 88 TPG Internet Pty Ltd
4755 1550 385 159 TATA Communications formerly
9583 1235 94 536 Sify Limited
9829 1187 1001 30 National Internet Backbone
7552 1108 1062 11 Vietel Corporation
24560 1013 384 166 Bharti Airtel Ltd., Telemedia
4808 982 1946 281 CNCGROUP IP network China169
18101 947 130 158 Reliance Infocom Ltd Internet
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
7029 3410 1031 168 Windstream Communications Inc
6389 3375 3807 200 BellSouth.net Inc.
18566 2094 383 179 Covad Communications Co.
1785 1884 679 126 PaeTec Communications, Inc.
20115 1632 1558 628 Charter Communications
4323 1598 1076 382 tw telecom holdings, inc.
22773 1544 2910 111 Cox Communications Inc.
30036 1398 252 743 Mediacom Communications Corp
7018 1284 9809 843 AT&T Services, Inc.
11492 1164 212 415 CABLE ONE, 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
8402 1563 544 16 Corbina telecom
2118 1427 97 13 EUnet/RELCOM Autonomous Syste
15557 1089 2247 55 NEUF CEGETEL (formerly LDCOM
34984 664 188 171 BILISIM TELEKOM
31148 660 37 9 FreeNet ISP
6830 641 1943 412 UPC Broadband
12479 636 651 55 France Telecom Espana SA
20940 616 200 486 Akamai Technologies European
9116 541 326 32 Goldenlines main autonomous s
3320 533 8442 398 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 1806 329 130 Types of queries are: POCs, o
28573 1726 1099 60 Types of queries are: POCs, o
7303 1346 824 189 Telecom Argentina S.A.
8151 1338 2998 340 Uninet S.A. de C.V.
26615 901 676 31 Tim Celular S.A.
27947 653 68 109 Telconet S.A
11172 638 107 74 Alestra, S. de R.L. de C.V.
22047 584 326 15 Types of queries are: POCs, o
3816 556 237 100 Types of queries are: POCs, o
7738 550 1050 31 Telecomunicacoes da Bahia 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 1264 958 13 TEDATA
24863 840 274 34 LINKdotNET AS number
6713 489 649 18 Itissalat Al-MAGHRIB
3741 271 923 228 The Internet Solution
15706 227 32 6 Sudatel Internet Exchange Aut
12258 197 28 62 Vodacom Internet Company
15399 190 29 12 Wananchi Online Limited
24835 177 80 8 RAYA Telecom - Egypt
33776 162 12 25 Starcomms Nigeria Limited
36923 157 20 4 Swift Networks Limited
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
7029 3410 1031 168 Windstream Communications Inc
6389 3375 3807 200 BellSouth.net Inc.
18566 2094 383 179 Covad Communications Co.
4766 1936 11107 684 Korea Telecom (KIX)
1785 1884 679 126 PaeTec Communications, Inc.
10620 1806 329 130 Types of queries are: POCs, o
28573 1726 1099 60 Types of queries are: POCs, o
17974 1662 500 62 PT Telekomunikasi Indonesia
7545 1651 303 88 TPG Internet Pty Ltd
20115 1632 1558 628 Charter Communications
Complete listing at http://thyme.rand.apnic.net/london/data-ASnet
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
6389 3375 3175 BellSouth.net Inc.
18566 2094 1915 Covad Communications Co.
1785 1884 1758 PaeTec Communications, Inc.
10620 1806 1676 Types of queries are: POCs, o
28573 1726 1666 Types of queries are: POCs, o
17974 1662 1600 PT Telekomunikasi Indonesia
7545 1651 1563 TPG Internet Pty Ltd
8402 1563 1547 Corbina telecom
22773 1544 1433 Cox Communications Inc.
2118 1427 1414 EUnet/RELCOM Autonomous Syste
Complete listing at http://thyme.rand.apnic.net/london/data-CIDRnet
List of Unregistered Origin ASNs (Global)
-----------------------------------------
Bad AS Designation Network Transit AS Description
54439 UNALLOCATED 8.25.174.0/24 3356 Level 3 Communicatio
65333 PRIVATE 10.0.0.0/8 0 *
32805 UNALLOCATED 12.1.225.0/24 7018 AT&T Services, Inc.
15132 UNALLOCATED 12.9.150.0/24 7018 AT&T Services, Inc.
32567 UNALLOCATED 12.14.170.0/24 7018 AT&T Services, Inc.
16504 UNALLOCATED 12.18.155.0/24 30170 Optic Fusion
32567 UNALLOCATED 12.25.107.0/24 4323 tw telecom holdings,
30031 UNALLOCATED 12.27.122.0/24 7018 AT&T Services, Inc.
26095 UNALLOCATED 12.34.8.0/24 7018 AT&T Services, Inc.
21861 UNALLOCATED 12.37.59.0/24 7018 AT&T Services, Inc.
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
128.0.0.0/21 12654 RIPE NCC RIS Project
128.0.24.0/24 12654 RIPE NCC RIS Project
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
14.192.0.0/22 45464 Room 201, TGU Bldg
14.192.4.0/22 45464 Room 201, TGU Bldg
14.192.8.0/22 45464 Room 201, TGU Bldg
14.192.12.0/22 45464 Room 201, TGU Bldg
14.192.16.0/22 45464 Room 201, TGU Bldg
14.192.20.0/22 45464 Room 201, TGU Bldg
14.192.24.0/22 45464 Room 201, TGU Bldg
14.192.28.0/22 45464 Room 201, TGU Bldg
23.27.0.0/20 54500 EGIHosting
23.27.16.0/20 54500 EGIHosting
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 /8:20 /9:12 /10:28 /11:81 /12:236
/13:458 /14:819 /15:1474 /16:12129 /17:6243 /18:10405
/19:20529 /20:28486 /21:29238 /22:39565 /23:36995 /24:207845
/25:11 /26:21 /27:20 /28:154 /29:141 /30:69
/31:0 /32:142
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
7029 3053 3410 Windstream Communications Inc
6389 2089 3375 BellSouth.net Inc.
18566 2043 2094 Covad Communications Co.
10620 1703 1806 Types of queries are: POCs, o
8402 1540 1563 Corbina telecom
30036 1346 1398 Mediacom Communications Corp
11492 1127 1164 CABLE ONE, INC.
8452 1074 1264 TEDATA
1785 1065 1884 PaeTec Communications, Inc.
7011 1037 1151 Frontier Communications of Am
Complete listing at http://thyme.rand.apnic.net/london/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:530 2:641 4:14 6:3 8:394 12:1973
13:1 14:604 15:12 16:3 17:7 20:8
23:144 24:1746 27:1243 31:951 32:57 33:2
34:2 36:8 37:291 38:771 40:122 41:3123
42:128 44:3 46:1430 47:3 49:334 50:516
52:13 54:5 55:10 56:3 57:35 58:911
59:487 60:274 61:1088 62:982 63:1993 64:4173
65:2273 66:4492 67:2004 68:1146 69:3140 70:899
71:389 72:1779 74:2583 75:491 76:318 77:959
78:967 79:493 80:1239 81:903 82:653 83:552
84:596 85:1198 86:732 87:921 88:348 89:1613
90:294 91:4613 92:519 93:1445 94:1454 95:1118
96:369 97:316 98:795 99:38 100:6 101:147
103:895 106:63 107:175 108:204 109:1540 110:732
111:892 112:430 113:545 114:624 115:744 116:847
117:706 118:905 119:1186 120:332 121:668 122:1618
123:1084 124:1297 125:1259 128:504 129:183 130:258
131:590 132:165 133:21 134:230 135:63 136:210
137:184 138:275 139:144 140:466 141:241 142:373
143:416 144:494 145:69 146:484 147:243 148:703
149:294 150:149 151:174 152:454 153:171 154:6
155:443 156:210 157:336 158:163 159:447 160:324
161:232 162:340 163:176 164:531 165:392 166:562
167:463 168:806 169:147 170:842 171:121 172:4
173:1717 174:584 175:422 176:457 177:583 178:1286
180:1097 181:73 182:741 183:277 184:441 185:1
186:2126 187:849 188:1140 189:1188 190:5517 192:5942
193:5599 194:4563 195:3632 196:1253 197:186 198:3568
199:4424 200:5649 201:1648 202:8192 203:8501 204:4271
205:2444 206:2653 207:2727 208:4047 209:3579 210:2684
211:1441 212:1990 213:1903 214:862 215:106 216:5033
217:1527 218:522 219:337 220:1227 221:536 222:297
223:314
End of report