Routing Table Report 08:00 +10GMT Tue 20 Mar, 2012
Report Website: http://thyme.rand.apnic.net
Detailed Analysis: http://thyme.rand.apnic.net/london/
Analysis Summary
----------------
BGP routing table entries examined: 394680
Prefixes after maximum aggregation: 168931
Deaggregation factor: 2.34
Unique aggregates announced to Internet: 194731
Total ASes present in the Internet Routing Table: 38166
Prefixes per ASN: 10.34
Origin-only ASes present in the Internet Routing Table: 32903
Origin ASes announcing only one prefix: 15494
Transit ASes present in the Internet Routing Table: 5263
Transit-only ASes present in the Internet Routing Table: 124
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: 1313
Unregistered ASNs in the Routing Table: 293
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: 5098
Special use prefixes present in the Routing Table: 8
Prefixes being announced from unallocated address space: 773
Number of addresses announced to Internet: 2543225344
Equivalent to 151 /8s, 150 /16s and 138 /24s
Percentage of available address space announced: 68.6
Percentage of allocated address space announced: 68.6
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: 166098
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 92740
Total APNIC prefixes after maximum aggregation: 30527
APNIC Deaggregation factor: 3.04
Prefixes being announced from the APNIC address blocks: 90155
Unique aggregates announced from the APNIC address blocks: 39259
APNIC Region origin ASes present in the Internet Routing Table: 4626
APNIC Prefixes per ASN: 19.49
APNIC Region origin ASes announcing only one prefix: 1255
APNIC Region transit ASes present in the Internet Routing Table: 700
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: 640733952
Equivalent to 38 /8s, 48 /16s and 211 /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: 147674
Total ARIN prefixes after maximum aggregation: 75241
ARIN Deaggregation factor: 1.96
Prefixes being announced from the ARIN address blocks: 119484
Unique aggregates announced from the ARIN address blocks: 49872
ARIN Region origin ASes present in the Internet Routing Table: 14879
ARIN Prefixes per ASN: 8.03
ARIN Region origin ASes announcing only one prefix: 5665
ARIN Region transit ASes present in the Internet Routing Table: 1508
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: 806634240
Equivalent to 48 /8s, 20 /16s and 67 /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: 101178
Total RIPE prefixes after maximum aggregation: 52964
RIPE Deaggregation factor: 1.91
Prefixes being announced from the RIPE address blocks: 92744
Unique aggregates announced from the RIPE address blocks: 57040
RIPE Region origin ASes present in the Internet Routing Table: 16336
RIPE Prefixes per ASN: 5.68
RIPE Region origin ASes announcing only one prefix: 7975
RIPE Region transit ASes present in the Internet Routing Table: 2585
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: 502087168
Equivalent to 29 /8s, 237 /16s and 62 /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: 38363
Total LACNIC prefixes after maximum aggregation: 7996
LACNIC Deaggregation factor: 4.80
Prefixes being announced from the LACNIC address blocks: 38304
Unique aggregates announced from the LACNIC address blocks: 19658
LACNIC Region origin ASes present in the Internet Routing Table: 1561
LACNIC Prefixes per ASN: 24.54
LACNIC Region origin ASes announcing only one prefix: 434
LACNIC Region transit ASes present in the Internet Routing Table: 285
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: 98437120
Equivalent to 5 /8s, 222 /16s and 8 /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: 8686
Total AfriNIC prefixes after maximum aggregation: 2037
AfriNIC Deaggregation factor: 4.26
Prefixes being announced from the AfriNIC address blocks: 6866
Unique aggregates announced from the AfriNIC address blocks: 2172
AfriNIC Region origin ASes present in the Internet Routing Table: 518
AfriNIC Prefixes per ASN: 13.25
AfriNIC Region origin ASes announcing only one prefix: 165
AfriNIC Region transit ASes present in the Internet Routing Table: 115
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: 31410688
Equivalent to 1 /8s, 223 /16s and 74 /24s
Percentage of available AfriNIC address space announced: 46.8
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 1937 11107 684 Korea Telecom (KIX)
17974 1660 500 61 PT Telekomunikasi Indonesia
7545 1651 303 88 TPG Internet Pty Ltd
4755 1550 385 159 TATA Communications formerly
9583 1220 93 527 Sify Limited
9829 1186 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 949 131 160 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 3414 1032 171 Windstream Communications Inc
6389 3376 3807 199 BellSouth.net Inc.
18566 2094 383 179 Covad Communications Co.
1785 1884 679 126 PaeTec Communications, Inc.
20115 1630 1558 628 Charter Communications
4323 1599 1076 382 tw telecom holdings, inc.
22773 1546 2910 111 Cox Communications Inc.
30036 1398 252 743 Mediacom Communications Corp
7018 1283 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 1613 544 16 Corbina telecom
2118 1427 97 13 EUnet/RELCOM Autonomous Syste
15557 1089 2247 55 NEUF CEGETEL (formerly LDCOM
34984 663 188 171 BILISIM TELEKOM
6830 641 1943 412 UPC Broadband
12479 634 653 67 France Telecom Espana SA
20940 617 200 487 Akamai Technologies European
9116 541 326 32 Goldenlines main autonomous s
31148 539 37 9 FreeNet ISP
3320 532 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 1801 329 130 Types of queries are: POCs, o
28573 1707 1094 58 Types of queries are: POCs, o
8151 1333 2995 341 Uninet S.A. de C.V.
7303 1331 823 185 Telecom Argentina S.A.
26615 900 676 31 Tim Celular S.A.
27947 659 68 109 Telconet S.A
11172 637 107 74 Alestra, S. de R.L. de C.V.
22047 584 326 15 Types of queries are: POCs, o
3816 563 240 89 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 1263 958 13 TEDATA
24863 837 274 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
24835 177 80 8 RAYA Telecom - Egypt
33776 162 12 25 Starcomms Nigeria Limited
36923 157 20 4 Swift Networks Limited
29571 155 15 16 Ci Telecom Autonomous system
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 3414 1032 171 Windstream Communications Inc
6389 3376 3807 199 BellSouth.net Inc.
18566 2094 383 179 Covad Communications Co.
4766 1937 11107 684 Korea Telecom (KIX)
1785 1884 679 126 PaeTec Communications, Inc.
10620 1801 329 130 Types of queries are: POCs, o
28573 1707 1094 58 Types of queries are: POCs, o
17974 1660 500 61 PT Telekomunikasi Indonesia
7545 1651 303 88 TPG Internet Pty Ltd
20115 1630 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 3376 3177 BellSouth.net Inc.
18566 2094 1915 Covad Communications Co.
1785 1884 1758 PaeTec Communications, Inc.
10620 1801 1671 Types of queries are: POCs, o
28573 1707 1649 Types of queries are: POCs, o
17974 1660 1599 PT Telekomunikasi Indonesia
8402 1613 1597 Corbina telecom
7545 1651 1563 TPG Internet Pty Ltd
22773 1546 1435 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 /15:1473 /16:12107 /17:6228 /18:10360
/19:20510 /20:28501 /21:29251 /22:39458 /23:36992 /24:207587
/25:11 /26:21 /27:20 /28:153 /29:141 /30:69
/31:0 /32:144
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
7029 3053 3414 Windstream Communications Inc
6389 2090 3376 BellSouth.net Inc.
18566 2043 2094 Covad Communications Co.
10620 1698 1801 Types of queries are: POCs, o
8402 1590 1613 Corbina telecom
30036 1346 1398 Mediacom Communications Corp
11492 1127 1164 CABLE ONE, INC.
8452 1073 1263 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)
----------------------------------------------
1:524 2:713 4:14 6:3 8:394 12:1972
13:1 14:602 15:12 16:3 17:7 20:8
23:144 24:1748 27:1241 31:947 32:57 33:1
34:2 36:8 37:286 38:773 40:122 41:3046
42:128 44:3 46:1429 47:3 49:339 50:516
52:13 54:5 55:8 56:3 57:35 58:912
59:487 60:274 61:1085 62:979 63:2011 64:4175
65:2280 66:4491 67:2004 68:1158 69:3174 70:898
71:388 72:1780 74:2585 75:491 76:319 77:960
78:963 79:480 80:1234 81:903 82:653 83:553
84:599 85:1189 86:735 87:912 88:334 89:1565
90:288 91:4592 92:518 93:1444 94:1409 95:1105
96:370 97:316 98:824 99:38 100:6 101:145
103:898 106:63 107:173 108:204 109:1544 110:734
111:878 112:430 113:541 114:630 115:770 116:845
117:702 118:905 119:1186 120:335 121:670 122:1611
123:1074 124:1297 125:1273 128:497 129:183 130:257
131:588 132:162 133:21 134:232 135:63 136:210
137:183 138:275 139:144 140:467 141:241 142:373
143:413 144:496 145:69 146:482 147:243 148:700
149:294 150:149 151:174 152:452 153:171 154:6
155:441 156:210 157:335 158:163 159:446 160:324
161:232 162:340 163:176 164:531 165:395 166:562
167:462 168:793 169:147 170:841 171:121 172:4
173:1717 174:592 175:419 176:458 177:579 178:1292
180:1117 181:73 182:739 183:276 184:441 185:1
186:2116 187:839 188:1060 189:1185 190:5500 192:5933
193:5595 194:4568 195:3633 196:1246 197:174 198:3561
199:4427 200:5652 201:1646 202:8191 203:8492 204:4276
205:2444 206:2648 207:2726 208:4065 209:3579 210:2680
211:1440 212:1988 213:1906 214:865 215:107 216:5030
217:1521 218:519 219:335 220:1226 221:536 222:296
223:311
End of report