Routing Table Report 08:00 +10GMT Wed 13 Apr, 2011
Report Website: http://thyme.rand.apnic.net
Detailed Analysis: http://thyme.rand.apnic.net/london/
Analysis Summary
----------------
BGP routing table entries examined: 347678
Prefixes after maximum aggregation: 158158
Deaggregation factor: 2.20
Unique aggregates announced to Internet: 174856
Total ASes present in the Internet Routing Table: 36104
Prefixes per ASN: 9.63
Origin-only ASes present in the Internet Routing Table: 31221
Origin ASes announcing only one prefix: 15025
Transit ASes present in the Internet Routing Table: 4883
Transit-only ASes present in the Internet Routing Table: 113
Average AS path length visible in the Internet Routing Table: 3.6
Max AS path length visible: 25
Max AS path prepend of ASN (32374) 19
Prefixes from unregistered ASNs in the Routing Table: 1967
Unregistered ASNs in the Routing Table: 357
Number of 32-bit ASNs allocated by the RIRs: 1281
Number of 32-bit ASNs visible in the Routing Table: 0
Prefixes from 32-bit ASNs in the Routing Table: 2185
Special use prefixes present in the Routing Table: 6
Prefixes being announced from unallocated address space: 161
Number of addresses announced to Internet: 2425809152
Equivalent to 144 /8s, 150 /16s and 233 /24s
Percentage of available address space announced: 65.4
Percentage of allocated address space announced: 65.4
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: 142534
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 83606
Total APNIC prefixes after maximum aggregation: 28442
APNIC Deaggregation factor: 2.94
Prefixes being announced from the APNIC address blocks: 81421
Unique aggregates announced from the APNIC address blocks: 36866
APNIC Region origin ASes present in the Internet Routing Table: 4346
APNIC Prefixes per ASN: 18.73
APNIC Region origin ASes announcing only one prefix: 1230
APNIC Region transit ASes present in the Internet Routing Table: 668
Average APNIC Region AS path length visible: 4.1
Max APNIC Region AS path length visible: 23
Number of APNIC region 32-bit ASNs visible in the Routing Table: 0
Number of APNIC addresses announced to Internet: 607882240
Equivalent to 36 /8s, 59 /16s and 140 /24s
Percentage of available APNIC address space announced: 77.1
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, 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: 137625
Total ARIN prefixes after maximum aggregation: 70464
ARIN Deaggregation factor: 1.95
Prefixes being announced from the ARIN address blocks: 110467
Unique aggregates announced from the ARIN address blocks: 45150
ARIN Region origin ASes present in the Internet Routing Table: 14234
ARIN Prefixes per ASN: 7.76
ARIN Region origin ASes announcing only one prefix: 5450
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: 797895936
Equivalent to 47 /8s, 142 /16s and 237 /24s
Percentage of available ARIN address space announced: 63.4
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: 83960
Total RIPE prefixes after maximum aggregation: 47618
RIPE Deaggregation factor: 1.76
Prefixes being announced from the RIPE address blocks: 77161
Unique aggregates announced from the RIPE address blocks: 50643
RIPE Region origin ASes present in the Internet Routing Table: 15489
RIPE Prefixes per ASN: 4.98
RIPE Region origin ASes announcing only one prefix: 7778
RIPE Region transit ASes present in the Internet Routing Table: 2389
Average RIPE Region AS path length visible: 3.5
Max RIPE Region AS path length visible: 25
Number of RIPE region 32-bit ASNs visible in the Routing Table: 0
Number of RIPE addresses announced to Internet: 464367360
Equivalent to 27 /8s, 173 /16s and 175 /24s
Percentage of available RIPE address space announced: 74.8
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: 31962
Total LACNIC prefixes after maximum aggregation: 7348
LACNIC Deaggregation factor: 4.35
Prefixes being announced from the LACNIC address blocks: 31063
Unique aggregates announced from the LACNIC address blocks: 16387
LACNIC Region origin ASes present in the Internet Routing Table: 1423
LACNIC Prefixes per ASN: 21.83
LACNIC Region origin ASes announcing only one prefix: 430
LACNIC Region transit ASes present in the Internet Routing Table: 250
Average LACNIC Region AS path length visible: 4.0
Max LACNIC Region AS path length visible: 18
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 0
Number of LACNIC addresses announced to Internet: 81837568
Equivalent to 4 /8s, 224 /16s and 190 /24s
Percentage of available LACNIC address space announced: 54.2
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: 7598
Total AfriNIC prefixes after maximum aggregation: 1814
AfriNIC Deaggregation factor: 4.19
Prefixes being announced from the AfriNIC address blocks: 5955
Unique aggregates announced from the AfriNIC address blocks: 1874
AfriNIC Region origin ASes present in the Internet Routing Table: 443
AfriNIC Prefixes per ASN: 13.44
AfriNIC Region origin ASes announcing only one prefix: 137
AfriNIC Region transit ASes present in the Internet Routing Table: 98
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: 22710784
Equivalent to 1 /8s, 90 /16s and 138 /24s
Percentage of available AfriNIC address space announced: 33.8
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 1875 9509 604 Korea Telecom (KIX)
7545 1497 300 81 TPG Internet Pty Ltd
17974 1469 472 34 PT Telekomunikasi Indonesia
4755 1444 638 165 TATA Communications formerly
24560 1137 322 203 Bharti Airtel Ltd., Telemedia
9829 1007 870 50 National Internet Backbone
9583 978 72 494 Sify Limited
4808 949 2028 277 CNCGROUP IP network China169
17488 939 162 98 Hathway IP Over Cable Interne
18101 935 116 139 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
6389 3665 3822 256 BellSouth.net Inc.
4323 2539 1106 397 tw telecom holdings, inc.
1785 1789 681 127 PaeTec Communications, Inc.
18566 1633 333 200 Covad Communications Co.
6478 1610 305 42 AT&T Services, Inc.
20115 1537 1552 641 Charter Communications
19262 1494 4949 297 Verizon Online LLC
7018 1364 6962 893 AT&T Services, Inc.
22773 1297 2865 84 Cox Communications Inc.
2386 1271 536 914 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 515 1780 318 UPC Broadband
34984 508 98 185 BILISIM TELEKOM
29049 467 33 34 AzerSat LLC.
3292 455 2013 392 TDC Data Networks
8866 446 134 26 Bulgarian Telecommunication C
20940 445 129 341 Akamai Technologies European
3320 416 7607 362 Deutsche Telekom AG
8551 405 355 38 Bezeq International
12479 404 577 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 1418 263 155 Types of queries are: POCs, o
28573 1255 972 86 Types of queries are: POCs, o
8151 1233 2667 364 Uninet S.A. de C.V.
6503 922 354 73 Axtel, S.A.B. de C.V.
7303 900 464 136 Telecom Argentina S.A.
14420 661 53 90 CORPORACION NACIONAL DE TELEC
22047 567 310 15 Types of queries are: POCs, o
3816 517 225 97 Types of queries are: POCs, o
11172 485 99 81 Alestra, S. de R.L. de C.V.
7738 479 922 30 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 834 445 11 TEDATA
24863 774 147 37 LINKdotNET AS number
15475 425 90 8 Nile Online
36992 297 287 12 Etisalat MISR
3741 266 985 227 The Internet Solution
6713 231 215 12 Itissalat Al-MAGHRIB
33776 227 13 5 Starcomms Nigeria Limited
24835 222 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 3665 3822 256 BellSouth.net Inc.
4323 2539 1106 397 tw telecom holdings, inc.
23456 2185 637 1186 32-bit ASN transition
4766 1875 9509 604 Korea Telecom (KIX)
1785 1789 681 127 PaeTec Communications, Inc.
18566 1633 333 200 Covad Communications Co.
6478 1610 305 42 AT&T Services, Inc.
20115 1537 1552 641 Charter Communications
7545 1497 300 81 TPG Internet Pty Ltd
19262 1494 4949 297 Verizon Online LLC
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 2539 2142 tw telecom holdings, inc.
1785 1789 1662 PaeTec Communications, Inc.
6478 1610 1568 AT&T Services, Inc.
17974 1469 1435 PT Telekomunikasi Indonesia
18566 1633 1433 Covad Communications Co.
7545 1497 1416 TPG Internet Pty Ltd
4755 1444 1279 TATA Communications formerly
4766 1875 1271 Korea Telecom (KIX)
10620 1418 1263 Types of queries are: POCs, o
11492 1258 1243 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
45083 UNALLOCATED 1.45.0.0/16 4808 CNCGROUP IP network
45083 UNALLOCATED 1.45.92.0/22 4808 CNCGROUP IP network
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.
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
2.56.0.0/16 44559 E-Rent LLC
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
31.6.96.0/21 43554 Cifrovye Dispetcherskie Siste
31.6.96.0/19 43554 Cifrovye Dispetcherskie Siste
31.6.104.0/21 43554 Cifrovye Dispetcherskie Siste
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 /10:26 /11:75 /12:219
/13:452 /14:772 /15:1377 /16:11569 /17:5701 /18:9394
/19:19208 /20:25027 /21:25371 /22:33439 /23:32051 /24:182493
/25:11 /26:17 /27:24 /28:158 /29:94 /30:52
/31:0 /32:116
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2261 3665 BellSouth.net Inc.
18566 1611 1633 Covad Communications Co.
6478 1564 1610 AT&T Services, Inc.
4323 1359 2539 tw telecom holdings, inc.
10620 1308 1418 Types of queries are: POCs, o
11492 1207 1258 CABLE ONE, INC.
23456 1123 2185 32-bit ASN transition
7011 1062 1161 Frontier Communications of Am
1785 1056 1789 PaeTec Communications, Inc.
22773 841 1297 Cox Communications Inc.
Complete listing at http://thyme.rand.apnic.net/london/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:297 2:58 4:14 5:1 8:350 12:1999
13:1 14:422 15:15 16:3 17:8 20:9
23:5 24:1602 27:714 31:220 32:55 33:3
34:2 37:1 38:759 39:1 40:101 41:2326
42:1 44:3 46:823 47:4 49:172 50:158
52:13 55:4 56:2 57:29 58:795 59:480
60:385 61:1063 62:1004 63:1916 64:3862 65:2329
66:4300 67:1800 68:1079 69:2948 70:699 71:344
72:1900 73:1 74:2334 75:285 76:335 77:849
78:689 79:456 80:1087 81:831 82:514 83:461
84:646 85:1059 86:564 87:750 88:331 89:1582
90:180 91:3692 92:514 93:1061 94:1259 95:785
96:445 97:251 98:818 99:35 101:53 103:1
106:2 107:4 108:78 109:940 110:536 111:682
112:315 113:387 114:500 115:672 116:914 117:654
118:763 119:1133 120:285 121:650 122:1624 123:1045
124:1217 125:1248 128:213 129:159 130:167 131:560
132:102 133:20 134:209 135:49 136:210 137:139
138:301 139:101 140:464 141:174 142:359 143:391
144:479 145:52 146:439 147:204 148:586 149:262
150:160 151:187 152:304 153:180 154:2 155:363
156:186 157:326 158:131 159:373 160:314 161:235
162:276 163:154 164:490 165:348 166:514 167:419
168:720 169:152 170:776 171:75 172:1 173:1257
174:540 175:341 177:79 178:850 180:796 181:7
182:407 183:197 184:242 185:1 186:1121 187:828
188:953 189:1004 190:4814 192:5732 193:4808 194:3462
195:2957 196:1198 197:16 198:3511 199:3873 200:5519
201:1473 202:8116 203:8305 204:4049 205:2301 206:2548
207:2951 208:3913 209:3476 210:2625 211:1353 212:1988
213:1715 214:719 215:66 216:4832 217:1658 218:544
219:382 220:1191 221:446 222:305 223:102
End of report
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