Routing Table Report 08:00 +10GMT Sat 16 Apr, 2011
Report Website: http://thyme.rand.apnic.net
Detailed Analysis: http://thyme.rand.apnic.net/london/
Analysis Summary
----------------
BGP routing table entries examined: 348872
Prefixes after maximum aggregation: 158402
Deaggregation factor: 2.20
Unique aggregates announced to Internet: 174982
Total ASes present in the Internet Routing Table: 36156
Prefixes per ASN: 9.65
Origin-only ASes present in the Internet Routing Table: 31258
Origin ASes announcing only one prefix: 15045
Transit ASes present in the Internet Routing Table: 4898
Transit-only ASes present in the Internet Routing Table: 115
Average AS path length visible in the Internet Routing Table: 3.6
Max AS path length visible: 27
Max AS path prepend of ASN (32374) 19
Prefixes from unregistered ASNs in the Routing Table: 1952
Unregistered ASNs in the Routing Table: 365
Number of 32-bit ASNs allocated by the RIRs: 1295
Number of 32-bit ASNs visible in the Routing Table: 0
Prefixes from 32-bit ASNs in the Routing Table: 2204
Special use prefixes present in the Routing Table: 6
Prefixes being announced from unallocated address space: 152
Number of addresses announced to Internet: 2428455680
Equivalent to 144 /8s, 191 /16s and 75 /24s
Percentage of available address space announced: 65.5
Percentage of allocated address space announced: 65.5
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: 143317
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 83740
Total APNIC prefixes after maximum aggregation: 28478
APNIC Deaggregation factor: 2.94
Prefixes being announced from the APNIC address blocks: 81523
Unique aggregates announced from the APNIC address blocks: 36960
APNIC Region origin ASes present in the Internet Routing Table: 4352
APNIC Prefixes per ASN: 18.73
APNIC Region origin ASes announcing only one prefix: 1234
APNIC Region transit ASes present in the Internet Routing Table: 665
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: 608051456
Equivalent to 36 /8s, 62 /16s and 33 /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: 138363
Total ARIN prefixes after maximum aggregation: 70520
ARIN Deaggregation factor: 1.96
Prefixes being announced from the ARIN address blocks: 111167
Unique aggregates announced from the ARIN address blocks: 45081
ARIN Region origin ASes present in the Internet Routing Table: 14242
ARIN Prefixes per ASN: 7.81
ARIN Region origin ASes announcing only one prefix: 5453
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: 797907200
Equivalent to 47 /8s, 143 /16s and 25 /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: 84289
Total RIPE prefixes after maximum aggregation: 47743
RIPE Deaggregation factor: 1.77
Prefixes being announced from the RIPE address blocks: 77389
Unique aggregates announced from the RIPE address blocks: 50743
RIPE Region origin ASes present in the Internet Routing Table: 15521
RIPE Prefixes per ASN: 4.99
RIPE Region origin ASes announcing only one prefix: 7793
RIPE Region transit ASes present in the Internet Routing Table: 2411
Average RIPE Region AS path length visible: 3.5
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: 466810368
Equivalent to 27 /8s, 210 /16s and 246 /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: 31931
Total LACNIC prefixes after maximum aggregation: 7335
LACNIC Deaggregation factor: 4.35
Prefixes being announced from the LACNIC address blocks: 31043
Unique aggregates announced from the LACNIC address blocks: 16408
LACNIC Region origin ASes present in the Internet Routing Table: 1428
LACNIC Prefixes per ASN: 21.74
LACNIC Region origin ASes announcing only one prefix: 434
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: 18
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 0
Number of LACNIC addresses announced to Internet: 82193920
Equivalent to 4 /8s, 230 /16s and 46 /24s
Percentage of available LACNIC address space announced: 54.4
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: 7637
Total AfriNIC prefixes after maximum aggregation: 1814
AfriNIC Deaggregation factor: 4.21
Prefixes being announced from the AfriNIC address blocks: 5998
Unique aggregates announced from the AfriNIC address blocks: 1855
AfriNIC Region origin ASes present in the Internet Routing Table: 442
AfriNIC Prefixes per ASN: 13.57
AfriNIC Region origin ASes announcing only one prefix: 131
AfriNIC Region transit ASes present in the Internet Routing Table: 99
Average AfriNIC Region AS path length visible: 3.4
Max AfriNIC Region AS path length visible: 22
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 0
Number of AfriNIC addresses announced to Internet: 22737408
Equivalent to 1 /8s, 90 /16s and 242 /24s
Percentage of available AfriNIC address space announced: 33.9
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 1869 9476 598 Korea Telecom (KIX)
7545 1496 300 79 TPG Internet Pty Ltd
17974 1468 470 33 PT Telekomunikasi Indonesia
4755 1443 638 165 TATA Communications formerly
24560 1137 322 203 Bharti Airtel Ltd., Telemedia
9583 1058 78 496 Sify Limited
9829 1008 870 50 National Internet Backbone
4808 950 2028 277 CNCGROUP IP network China169
17488 940 162 98 Hathway IP Over Cable Interne
18101 934 116 138 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 3664 3822 256 BellSouth.net Inc.
4323 2657 1106 397 tw telecom holdings, inc.
1785 1791 681 128 PaeTec Communications, Inc.
18566 1705 338 241 Covad Communications Co.
6478 1623 307 37 AT&T Services, Inc.
20115 1535 1552 639 Charter Communications
19262 1495 4949 298 Verizon Online LLC
7018 1362 6962 894 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 516 1780 319 UPC Broadband
34984 505 98 183 BILISIM TELEKOM
29049 467 33 34 AzerSat LLC.
3292 454 1997 391 TDC Data Networks
8866 446 134 26 Bulgarian Telecommunication C
20940 440 127 338 Akamai Technologies European
3320 417 7607 363 Deutsche Telekom AG
12479 406 577 6 France Telecom Espana SA
8551 405 355 38 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 1426 265 157 Types of queries are: POCs, o
28573 1250 972 86 Types of queries are: POCs, o
8151 1233 2667 364 Uninet S.A. de C.V.
7303 904 466 137 Telecom Argentina S.A.
6503 901 354 73 Axtel, S.A.B. de C.V.
14420 663 53 91 CORPORACION NACIONAL DE TELEC
22047 568 310 15 Types of queries are: POCs, o
3816 516 225 99 Types of queries are: POCs, o
11172 485 99 81 Alestra, S. de R.L. de C.V.
14117 483 38 42 Telefonica del Sur 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 837 445 11 TEDATA
24863 775 147 37 LINKdotNET AS number
15475 430 90 8 Nile Online
36992 295 287 12 Etisalat MISR
3741 266 985 227 The Internet Solution
6713 235 215 13 Itissalat Al-MAGHRIB
24835 222 78 10 RAYA Telecom - Egypt
33776 202 12 8 Starcomms Nigeria Limited
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 3664 3822 256 BellSouth.net Inc.
4323 2657 1106 397 tw telecom holdings, inc.
23456 2204 645 1206 32-bit ASN transition
4766 1869 9476 598 Korea Telecom (KIX)
1785 1791 681 128 PaeTec Communications, Inc.
18566 1705 338 241 Covad Communications Co.
6478 1623 307 37 AT&T Services, Inc.
20115 1535 1552 639 Charter Communications
7545 1496 300 79 TPG Internet Pty Ltd
19262 1495 4949 298 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 2657 2260 tw telecom holdings, inc.
1785 1791 1663 PaeTec Communications, Inc.
6478 1623 1586 AT&T Services, Inc.
18566 1705 1464 Covad Communications Co.
17974 1468 1435 PT Telekomunikasi Indonesia
7545 1496 1417 TPG Internet Pty Ltd
4755 1443 1278 TATA Communications formerly
4766 1869 1271 Korea Telecom (KIX)
10620 1426 1269 Types of queries are: POCs, o
11492 1262 1247 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
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
31.7.168.0/21 48057 Company for interactive techn
31.10.32.0/20 42004 Information Technology Un Lim
31.10.56.0/21 23456 32-bit ASN transition
31.134.48.0/20 48559 Infomex Sp. z o.o.
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 /11:76 /12:219
/13:452 /14:773 /15:1376 /16:11556 /17:5718 /18:9398
/19:19223 /20:25160 /21:25446 /22:33414 /23:32237 /24:183329
/25:10 /26:17 /27:19 /28:147 /29:91 /30:47
/31:0 /32:106
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2260 3664 BellSouth.net Inc.
18566 1680 1705 Covad Communications Co.
6478 1577 1623 AT&T Services, Inc.
4323 1352 2657 tw telecom holdings, inc.
10620 1316 1426 Types of queries are: POCs, o
11492 1211 1262 CABLE ONE, INC.
23456 1140 2204 32-bit ASN transition
7011 1062 1161 Frontier Communications of Am
1785 1058 1791 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)
----------------------------------------------
1:255 2:63 4:14 5:1 8:348 12:1997
13:1 14:422 15:15 16:3 17:8 20:8
23:5 24:1599 27:720 31:220 32:55 33:3
34:2 37:1 38:759 40:101 41:2342 42:1
44:3 46:851 47:4 49:173 50:358 52:13
55:5 56:2 57:30 58:794 59:468 60:385
61:1063 62:1008 63:1915 64:3893 65:2322 66:4336
67:1813 68:1075 69:2951 70:699 71:345 72:1906
73:1 74:2335 75:299 76:337 77:839 78:688
79:468 80:1087 81:830 82:495 83:458 84:646
85:1068 86:563 87:769 88:339 89:1585 90:181
91:3711 92:513 93:1043 94:1260 95:787 96:448
97:250 98:820 99:35 101:54 103:1 106:1
107:4 108:83 109:945 110:534 111:686 112:315
113:387 114:504 115:673 116:917 117:640 118:767
119:1126 120:287 121:651 122:1628 123:1040 124:1214
125:1251 128:213 129:159 130:166 131:558 132:104
133:20 134:209 135:49 136:211 137:139 138:301
139:101 140:465 141:174 142:382 143:391 144:481
145:53 146:437 147:204 148:586 149:232 150:163
151:187 152:305 153:180 154:2 155:394 156:187
157:325 158:132 159:375 160:314 161:236 162:276
163:154 164:488 165:348 166:514 167:427 168:720
169:153 170:776 171:75 172:1 173:1492 174:530
175:344 177:71 178:853 180:806 181:7 182:407
183:196 184:243 185:1 186:1134 187:807 188:989
189:999 190:4818 192:5733 193:4818 194:3460 195:2969
196:1210 197:16 198:3512 199:3878 200:5495 201:1480
202:8116 203:8320 204:4044 205:2301 206:2627 207:2951
208:3940 209:3471 210:2654 211:1352 212:1989 213:1717
214:725 215:67 216:4839 217:1659 218:544 219:383
220:1191 221:459 222:305 223:122
End of report
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