Routing Table Report 08:00 +10GMT Tue 26 Apr, 2011
Report Website: http://thyme.rand.apnic.net
Detailed Analysis: http://thyme.rand.apnic.net/london/
Analysis Summary
----------------
BGP routing table entries examined: 350508
Prefixes after maximum aggregation: 158895
Deaggregation factor: 2.21
Unique aggregates announced to Internet: 175417
Total ASes present in the Internet Routing Table: 36216
Prefixes per ASN: 9.68
Origin-only ASes present in the Internet Routing Table: 31325
Origin ASes announcing only one prefix: 15077
Transit ASes present in the Internet Routing Table: 4891
Transit-only ASes present in the Internet Routing Table: 112
Average AS path length visible in the Internet Routing Table: 3.6
Max AS path length visible: 27
Max AS path prepend of ASN (45903) 19
Prefixes from unregistered ASNs in the Routing Table: 1966
Unregistered ASNs in the Routing Table: 380
Number of 32-bit ASNs allocated by the RIRs: 1311
Number of 32-bit ASNs visible in the Routing Table: 0
Prefixes from 32-bit ASNs in the Routing Table: 2260
Special use prefixes present in the Routing Table: 6
Prefixes being announced from unallocated address space: 147
Number of addresses announced to Internet: 2435494656
Equivalent to 145 /8s, 42 /16s and 179 /24s
Percentage of available address space announced: 65.7
Percentage of allocated address space announced: 65.7
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 90.5
Total number of prefixes smaller than registry allocations: 144180
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 84510
Total APNIC prefixes after maximum aggregation: 28534
APNIC Deaggregation factor: 2.96
Prefixes being announced from the APNIC address blocks: 81833
Unique aggregates announced from the APNIC address blocks: 36799
APNIC Region origin ASes present in the Internet Routing Table: 4363
APNIC Prefixes per ASN: 18.76
APNIC Region origin ASes announcing only one prefix: 1234
APNIC Region transit ASes present in the Internet Routing Table: 662
Average APNIC Region AS path length visible: 4.1
Max APNIC Region AS path length visible: 22
Number of APNIC region 32-bit ASNs visible in the Routing Table: 0
Number of APNIC addresses announced to Internet: 610039296
Equivalent to 36 /8s, 92 /16s and 118 /24s
Percentage of available APNIC address space announced: 77.4
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, 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: 138815
Total ARIN prefixes after maximum aggregation: 70741
ARIN Deaggregation factor: 1.96
Prefixes being announced from the ARIN address blocks: 111499
Unique aggregates announced from the ARIN address blocks: 45210
ARIN Region origin ASes present in the Internet Routing Table: 14263
ARIN Prefixes per ASN: 7.82
ARIN Region origin ASes announcing only one prefix: 5458
ARIN Region transit ASes present in the Internet Routing Table: 1417
Average ARIN Region AS path length visible: 3.3
Max ARIN Region AS path length visible: 22
Number of ARIN region 32-bit ASNs visible in the Routing Table: 0
Number of ARIN addresses announced to Internet: 798897152
Equivalent to 47 /8s, 158 /16s and 52 /24s
Percentage of available ARIN address space announced: 63.5
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: 84349
Total RIPE prefixes after maximum aggregation: 47864
RIPE Deaggregation factor: 1.76
Prefixes being announced from the RIPE address blocks: 77506
Unique aggregates announced from the RIPE address blocks: 51048
RIPE Region origin ASes present in the Internet Routing Table: 15550
RIPE Prefixes per ASN: 4.98
RIPE Region origin ASes announcing only one prefix: 7816
RIPE Region transit ASes present in the Internet Routing Table: 2402
Average RIPE Region AS path length visible: 3.6
Max RIPE Region AS path length visible: 27
Number of RIPE region 32-bit ASNs visible in the Routing Table: 0
Number of RIPE addresses announced to Internet: 466846464
Equivalent to 27 /8s, 211 /16s and 131 /24s
Percentage of available RIPE address space announced: 75.2
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: 32158
Total LACNIC prefixes after maximum aggregation: 7342
LACNIC Deaggregation factor: 4.38
Prefixes being announced from the LACNIC address blocks: 31297
Unique aggregates announced from the LACNIC address blocks: 16484
LACNIC Region origin ASes present in the Internet Routing Table: 1430
LACNIC Prefixes per ASN: 21.89
LACNIC Region origin ASes announcing only one prefix: 434
LACNIC Region transit ASes present in the Internet Routing Table: 249
Average LACNIC Region AS path length visible: 4.0
Max LACNIC Region AS path length visible: 19
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 0
Number of LACNIC addresses announced to Internet: 82611456
Equivalent to 4 /8s, 236 /16s and 141 /24s
Percentage of available LACNIC address space announced: 54.7
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: 7717
Total AfriNIC prefixes after maximum aggregation: 1839
AfriNIC Deaggregation factor: 4.20
Prefixes being announced from the AfriNIC address blocks: 6085
Unique aggregates announced from the AfriNIC address blocks: 1889
AfriNIC Region origin ASes present in the Internet Routing Table: 445
AfriNIC Prefixes per ASN: 13.67
AfriNIC Region origin ASes announcing only one prefix: 135
AfriNIC Region transit ASes present in the Internet Routing Table: 97
Average AfriNIC Region AS path length visible: 3.4
Max AfriNIC Region AS path length visible: 17
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 0
Number of AfriNIC addresses announced to Internet: 23371520
Equivalent to 1 /8s, 100 /16s and 159 /24s
Percentage of available AfriNIC address space announced: 34.8
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 1868 9474 600 Korea Telecom (KIX)
17974 1490 470 34 PT Telekomunikasi Indonesia
4755 1453 634 166 TATA Communications formerly
7545 1437 300 78 TPG Internet Pty Ltd
7552 1195 1064 7 Vietel Corporation
24560 1151 324 186 Bharti Airtel Ltd., Telemedia
9583 1055 77 496 Sify Limited
9829 1008 870 50 National Internet Backbone
4808 944 2019 276 CNCGROUP IP network China169
17488 940 164 98 Hathway IP Over Cable Interne
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 3649 3822 256 BellSouth.net Inc.
4323 2645 1105 400 tw telecom holdings, inc.
1785 1792 681 128 PaeTec Communications, Inc.
18566 1707 338 239 Covad Communications Co.
6478 1641 309 46 AT&T Services, Inc.
20115 1535 1552 638 Charter Communications
19262 1494 4949 297 Verizon Online LLC
7018 1365 6961 899 AT&T Services, Inc.
22773 1299 2865 84 Cox Communications Inc.
2386 1271 536 912 AT&T Data Communications Serv
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
9116 540 326 30 Goldenlines main autonomous s
6830 517 1780 320 UPC Broadband
34984 509 106 182 BILISIM TELEKOM
3292 455 1997 391 TDC Data Networks
29049 450 33 48 AzerSat LLC.
8866 446 134 26 Bulgarian Telecommunication C
20940 443 130 338 Akamai Technologies European
3320 422 7609 367 Deutsche Telekom AG
8551 407 356 39 Bezeq International
12479 407 577 6 France Telecom Espana SA
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 1438 268 160 Types of queries are: POCs, o
28573 1261 988 87 Types of queries are: POCs, o
8151 1225 2665 365 Uninet S.A. de C.V.
6503 907 354 73 Axtel, S.A.B. de C.V.
7303 904 466 137 Telecom Argentina S.A.
14420 663 53 91 CORPORACION NACIONAL DE TELEC
22047 565 310 15 Types of queries are: POCs, o
3816 517 225 97 Types of queries are: POCs, o
14117 492 46 43 Telefonica del Sur S.A.
11172 486 99 81 Alestra, S. de R.L. de C.V.
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 867 445 11 TEDATA
24863 775 147 37 LINKdotNET AS number
15475 430 90 8 Nile Online
36992 297 415 13 Etisalat MISR
3741 267 985 227 The Internet Solution
6713 238 215 13 Itissalat Al-MAGHRIB
33776 227 13 5 Starcomms Nigeria Limited
24835 214 78 10 RAYA Telecom - Egypt
29571 161 17 11 Ci Telecom Autonomous system
16637 147 441 86 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 3649 3822 256 BellSouth.net Inc.
4323 2645 1105 400 tw telecom holdings, inc.
23456 2260 654 1239 32-bit ASN transition
4766 1868 9474 600 Korea Telecom (KIX)
1785 1792 681 128 PaeTec Communications, Inc.
18566 1707 338 239 Covad Communications Co.
6478 1641 309 46 AT&T Services, Inc.
20115 1535 1552 638 Charter Communications
19262 1494 4949 297 Verizon Online LLC
17974 1490 470 34 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 2645 2245 tw telecom holdings, inc.
1785 1792 1664 PaeTec Communications, Inc.
6478 1641 1595 AT&T Services, Inc.
18566 1707 1468 Covad Communications Co.
17974 1490 1456 PT Telekomunikasi Indonesia
7545 1437 1359 TPG Internet Pty Ltd
4755 1453 1287 TATA Communications formerly
10620 1438 1278 Types of queries are: POCs, o
4766 1868 1268 Korea Telecom (KIX)
11492 1256 1241 CABLE ONE, 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 *
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
13746 UNALLOCATED 12.24.56.0/24 7018 AT&T Services, Inc.
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
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 65535 Internet Assigned Numbers Aut
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
24.225.128.0/18 36377 Comcast Telecommunications, I
24.225.192.0/23 36377 Comcast Telecommunications, I
24.225.192.0/18 36377 Comcast Telecommunications, I
24.225.224.0/21 36377 Comcast Telecommunications, I
24.225.237.0/24 36377 Comcast Telecommunications, I
24.225.248.0/21 36377 Comcast Telecommunications, I
41.222.79.0/24 36938 >>UNKNOWN<<
41.223.92.0/22 36936 >>UNKNOWN<<
45.127.0.0/16 13767 DataBank Holdings, Ltd.
62.61.220.0/24 24974 Tachyon Europe BV
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 /8:21 /9:12 /10:28 /11:77 /12:221
/13:458 /14:787 /15:1379 /16:11638 /17:5733 /18:9557
/19:19263 /20:25633 /21:25526 /22:33536 /23:32291 /24:183865
/25:11 /26:17 /27:23 /28:162 /29:95 /30:51
/31:0 /32:124
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2250 3649 BellSouth.net Inc.
18566 1681 1707 Covad Communications Co.
6478 1595 1641 AT&T Services, Inc.
4323 1341 2645 tw telecom holdings, inc.
10620 1328 1438 Types of queries are: POCs, o
11492 1205 1256 CABLE ONE, INC.
23456 1131 2260 32-bit ASN transition
7011 1062 1161 Frontier Communications of Am
1785 1059 1792 PaeTec Communications, Inc.
22773 843 1299 Cox Communications Inc.
Complete listing at http://thyme.rand.apnic.net/london/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:261 2:45 4:14 5:1 6:3 8:350
12:2010 13:1 14:420 15:15 16:3 17:8
20:9 23:5 24:1602 27:724 31:220 32:55
33:3 34:2 37:1 38:759 40:101 41:2421
42:3 44:3 46:867 47:4 49:177 50:366
52:13 55:3 56:2 57:29 58:795 59:469
60:355 61:1091 62:983 63:1916 64:3906 65:2320
66:4343 67:1862 68:1080 69:2973 70:699 71:345
72:1907 73:1 74:2353 75:297 76:336 77:843
78:675 79:460 80:1097 81:831 82:497 83:463
84:649 85:1080 86:558 87:756 88:332 89:1578
90:183 91:3705 92:509 93:1054 94:1266 95:788
96:461 97:251 98:824 99:35 101:56 103:5
106:1 107:5 108:84 109:933 110:551 111:689
112:314 113:390 114:499 115:678 116:930 117:678
118:768 119:1138 120:299 121:648 122:1621 123:1053
124:1223 125:1204 128:214 129:159 130:166 131:563
132:103 133:19 134:209 135:49 136:211 137:138
138:301 139:104 140:463 141:174 142:382 143:396
144:481 145:52 146:437 147:207 148:577 149:232
150:165 151:186 152:306 153:179 154:2 155:396
156:188 157:324 158:132 159:377 160:313 161:235
162:276 163:155 164:491 165:348 166:511 167:426
168:714 169:152 170:780 171:76 172:1 173:1511
174:528 175:349 177:74 178:853 180:811 181:9
182:421 183:202 184:255 185:1 186:1138 187:813
188:986 189:1001 190:4836 192:5743 193:4831 194:3460
195:2966 196:1199 197:16 198:3515 199:3890 200:5523
201:1489 202:8132 203:8318 204:4055 205:2301 206:2650
207:2957 208:3966 209:3465 210:2644 211:1374 212:1980
213:1717 214:735 215:66 216:4855 217:1654 218:550
219:372 220:1193 221:465 222:305 223:128
End of report
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