Routing Table Report 08:00 +10GMT Sat 23 Apr, 2011
Report Website: http://thyme.rand.apnic.net
Detailed Analysis: http://thyme.rand.apnic.net/london/
Analysis Summary
----------------
BGP routing table entries examined: 350226
Prefixes after maximum aggregation: 158849
Deaggregation factor: 2.20
Unique aggregates announced to Internet: 175338
Total ASes present in the Internet Routing Table: 36195
Prefixes per ASN: 9.68
Origin-only ASes present in the Internet Routing Table: 31301
Origin ASes announcing only one prefix: 15071
Transit ASes present in the Internet Routing Table: 4894
Transit-only ASes present in the Internet Routing Table: 114
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: 1961
Unregistered ASNs in the Routing Table: 376
Number of 32-bit ASNs allocated by the RIRs: 1309
Number of 32-bit ASNs visible in the Routing Table: 0
Prefixes from 32-bit ASNs in the Routing Table: 2253
Special use prefixes present in the Routing Table: 6
Prefixes being announced from unallocated address space: 160
Number of addresses announced to Internet: 2434937856
Equivalent to 145 /8s, 34 /16s and 52 /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: 144156
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 84343
Total APNIC prefixes after maximum aggregation: 28571
APNIC Deaggregation factor: 2.95
Prefixes being announced from the APNIC address blocks: 81665
Unique aggregates announced from the APNIC address blocks: 36775
APNIC Region origin ASes present in the Internet Routing Table: 4363
APNIC Prefixes per ASN: 18.72
APNIC Region origin ASes announcing only one prefix: 1234
APNIC Region transit ASes present in the Internet Routing Table: 663
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: 609721344
Equivalent to 36 /8s, 87 /16s and 156 /24s
Percentage of available APNIC address space announced: 77.3
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: 138740
Total ARIN prefixes after maximum aggregation: 70724
ARIN Deaggregation factor: 1.96
Prefixes being announced from the ARIN address blocks: 111457
Unique aggregates announced from the ARIN address blocks: 45204
ARIN Region origin ASes present in the Internet Routing Table: 14259
ARIN Prefixes per ASN: 7.82
ARIN Region origin ASes announcing only one prefix: 5456
ARIN Region transit ASes present in the Internet Routing Table: 1414
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: 798576128
Equivalent to 47 /8s, 153 /16s and 78 /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: 84366
Total RIPE prefixes after maximum aggregation: 47840
RIPE Deaggregation factor: 1.76
Prefixes being announced from the RIPE address blocks: 77458
Unique aggregates announced from the RIPE address blocks: 51042
RIPE Region origin ASes present in the Internet Routing Table: 15537
RIPE Prefixes per ASN: 4.99
RIPE Region origin ASes announcing only one prefix: 7811
RIPE Region transit ASes present in the Internet Routing Table: 2410
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: 466775040
Equivalent to 27 /8s, 210 /16s and 108 /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: 32129
Total LACNIC prefixes after maximum aggregation: 7327
LACNIC Deaggregation factor: 4.39
Prefixes being announced from the LACNIC address blocks: 31266
Unique aggregates announced from the LACNIC address blocks: 16473
LACNIC Region origin ASes present in the Internet Routing Table: 1429
LACNIC Prefixes per ASN: 21.88
LACNIC Region origin ASes announcing only one prefix: 436
LACNIC Region transit ASes present in the Internet Routing Table: 248
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: 82631680
Equivalent to 4 /8s, 236 /16s and 220 /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: 7699
Total AfriNIC prefixes after maximum aggregation: 1828
AfriNIC Deaggregation factor: 4.21
Prefixes being announced from the AfriNIC address blocks: 6093
Unique aggregates announced from the AfriNIC address blocks: 1888
AfriNIC Region origin ASes present in the Internet Routing Table: 440
AfriNIC Prefixes per ASN: 13.85
AfriNIC Region origin ASes announcing only one prefix: 134
AfriNIC Region transit ASes present in the Internet Routing Table: 95
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: 23316224
Equivalent to 1 /8s, 99 /16s and 199 /24s
Percentage of available AfriNIC address space announced: 34.7
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 1470 470 34 PT Telekomunikasi Indonesia
4755 1452 634 166 TATA Communications formerly
7545 1437 300 78 TPG Internet Pty Ltd
24560 1140 323 204 Bharti Airtel Ltd., Telemedia
7552 1082 1064 7 Vietel Corporation
9583 1056 78 494 Sify Limited
9829 1007 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 3652 3822 256 BellSouth.net Inc.
4323 2648 1106 399 tw telecom holdings, inc.
1785 1791 680 127 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 1495 4949 298 Verizon Online LLC
7018 1370 6962 898 AT&T Services, Inc.
22773 1298 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 541 326 30 Goldenlines main autonomous s
6830 517 1780 320 UPC Broadband
34984 508 106 182 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
12479 408 577 6 France Telecom Espana SA
8551 407 356 39 Bezeq International
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 1437 268 160 Types of queries are: POCs, o
28573 1263 988 87 Types of queries are: POCs, o
8151 1229 2669 359 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 485 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 870 445 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 209 78 10 RAYA Telecom - Egypt
29571 161 17 11 Ci Telecom Autonomous system
16637 141 441 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 3652 3822 256 BellSouth.net Inc.
4323 2648 1106 399 tw telecom holdings, inc.
23456 2253 652 1231 32-bit ASN transition
4766 1868 9474 600 Korea Telecom (KIX)
1785 1791 680 127 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 1495 4949 298 Verizon Online LLC
17974 1470 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 2648 2249 tw telecom holdings, inc.
1785 1791 1664 PaeTec Communications, Inc.
6478 1641 1595 AT&T Services, Inc.
18566 1707 1468 Covad Communications Co.
17974 1470 1436 PT Telekomunikasi Indonesia
7545 1437 1359 TPG Internet Pty Ltd
4755 1452 1286 TATA Communications formerly
10620 1437 1277 Types of queries are: POCs, o
4766 1868 1268 Korea Telecom (KIX)
11492 1252 1237 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
31.192.112.0/20 30361 Swiftwill, Inc.
31.192.128.0/19 31214 TIS-DIALOG Autonomous system
31.192.232.0/23 47271 CJSC "Uralunicom"
31.192.232.0/22 47271 CJSC "Uralunicom"
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 /14:784 /15:1379 /16:11634 /17:5733 /18:9547
/19:19258 /20:25510 /21:25489 /22:33513 /23:32287 /24:183795
/25:11 /26:17 /27:23 /28:162 /29:95 /30:51
/31:0 /32:121
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2252 3652 BellSouth.net Inc.
18566 1681 1707 Covad Communications Co.
6478 1595 1641 AT&T Services, Inc.
4323 1344 2648 tw telecom holdings, inc.
10620 1327 1437 Types of queries are: POCs, o
11492 1201 1252 CABLE ONE, INC.
23456 1133 2253 32-bit ASN transition
7011 1062 1161 Frontier Communications of Am
1785 1059 1791 PaeTec Communications, Inc.
22773 842 1298 Cox Communications Inc.
Complete listing at http://thyme.rand.apnic.net/london/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:260 2:43 4:14 5:1 6:3 8:347
12:2008 13:1 14:425 15:15 16:3 17:8
20:9 23:5 24:1603 27:720 31:209 32:55
33:3 34:2 37:1 38:760 40:101 41:2423
42:3 44:3 46:865 47:4 49:177 50:366
52:13 55:3 56:2 57:29 58:796 59:468
60:354 61:1090 62:984 63:1915 64:3903 65:2322
66:4342 67:1854 68:1080 69:2975 70:699 71:345
72:1905 73:1 74:2347 75:297 76:336 77:845
78:676 79:459 80:1094 81:829 82:504 83:464
84:647 85:1084 86:562 87:764 88:333 89:1582
90:183 91:3705 92:514 93:1063 94:1263 95:787
96:461 97:251 98:822 99:35 101:55 103:5
106:1 107:5 108:84 109:932 110:547 111:688
112:314 113:390 114:503 115:673 116:930 117:673
118:766 119:1134 120:299 121:648 122:1625 123:1038
124:1213 125:1253 128:213 129:159 130:166 131:562
132:104 133:19 134:209 135:49 136:211 137:139
138:301 139:102 140:463 141:174 142:382 143:393
144:482 145:52 146:437 147:207 148:570 149:232
150:161 151:187 152:305 153:179 154:2 155:396
156:188 157:324 158:132 159:375 160:315 161:235
162:276 163:155 164:489 165:348 166:511 167:426
168:714 169:152 170:780 171:77 172:1 173:1503
174:531 175:344 177:71 178:852 180:808 181:9
182:420 183:205 184:253 185:1 186:1134 187:810
188:987 189:1004 190:4826 192:5744 193:4829 194:3453
195:2968 196:1175 197:16 198:3510 199:3888 200:5522
201:1489 202:8124 203:8309 204:4059 205:2307 206:2645
207:2957 208:3962 209:3476 210:2656 211:1373 212:1987
213:1705 214:739 215:67 216:4856 217:1657 218:549
219:372 220:1191 221:465 222:305 223:128
End of report
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