Routing Table Report 08:00 +10GMT Mon 18 Apr, 2011
Report Website: http://thyme.rand.apnic.net
Detailed Analysis: http://thyme.rand.apnic.net/london/
Analysis Summary
----------------
BGP routing table entries examined: 349105
Prefixes after maximum aggregation: 158497
Deaggregation factor: 2.20
Unique aggregates announced to Internet: 174798
Total ASes present in the Internet Routing Table: 36157
Prefixes per ASN: 9.66
Origin-only ASes present in the Internet Routing Table: 31261
Origin ASes announcing only one prefix: 15044
Transit ASes present in the Internet Routing Table: 4896
Transit-only ASes present in the Internet Routing Table: 110
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: 1974
Unregistered ASNs in the Routing Table: 366
Number of 32-bit ASNs allocated by the RIRs: 1303
Number of 32-bit ASNs visible in the Routing Table: 0
Prefixes from 32-bit ASNs in the Routing Table: 2197
Special use prefixes present in the Routing Table: 6
Prefixes being announced from unallocated address space: 146
Number of addresses announced to Internet: 2428111360
Equivalent to 144 /8s, 186 /16s and 10 /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: 143504
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 83643
Total APNIC prefixes after maximum aggregation: 28525
APNIC Deaggregation factor: 2.93
Prefixes being announced from the APNIC address blocks: 81467
Unique aggregates announced from the APNIC address blocks: 36685
APNIC Region origin ASes present in the Internet Routing Table: 4351
APNIC Prefixes per ASN: 18.72
APNIC Region origin ASes announcing only one prefix: 1232
APNIC Region transit ASes present in the Internet Routing Table: 660
Average APNIC Region AS path length visible: 4.1
Max APNIC Region AS path length visible: 21
Number of APNIC region 32-bit ASNs visible in the Routing Table: 0
Number of APNIC addresses announced to Internet: 608199424
Equivalent to 36 /8s, 64 /16s and 99 /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: 138440
Total ARIN prefixes after maximum aggregation: 70556
ARIN Deaggregation factor: 1.96
Prefixes being announced from the ARIN address blocks: 111240
Unique aggregates announced from the ARIN address blocks: 45108
ARIN Region origin ASes present in the Internet Routing Table: 14244
ARIN Prefixes per ASN: 7.81
ARIN Region origin ASes announcing only one prefix: 5448
ARIN Region transit ASes present in the Internet Routing Table: 1410
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: 797899776
Equivalent to 47 /8s, 142 /16s and 252 /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: 84347
Total RIPE prefixes after maximum aggregation: 47750
RIPE Deaggregation factor: 1.77
Prefixes being announced from the RIPE address blocks: 77452
Unique aggregates announced from the RIPE address blocks: 50791
RIPE Region origin ASes present in the Internet Routing Table: 15523
RIPE Prefixes per ASN: 4.99
RIPE Region origin ASes announcing only one prefix: 7795
RIPE Region transit ASes present in the Internet Routing Table: 2416
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: 466067712
Equivalent to 27 /8s, 199 /16s and 161 /24s
Percentage of available RIPE address space announced: 75.1
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: 32043
Total LACNIC prefixes after maximum aggregation: 7325
LACNIC Deaggregation factor: 4.37
Prefixes being announced from the LACNIC address blocks: 31141
Unique aggregates announced from the LACNIC address blocks: 16407
LACNIC Region origin ASes present in the Internet Routing Table: 1430
LACNIC Prefixes per ASN: 21.78
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: 17
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 0
Number of LACNIC addresses announced to Internet: 82198016
Equivalent to 4 /8s, 230 /16s and 62 /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: 7706
Total AfriNIC prefixes after maximum aggregation: 1825
AfriNIC Deaggregation factor: 4.22
Prefixes being announced from the AfriNIC address blocks: 6070
Unique aggregates announced from the AfriNIC address blocks: 1875
AfriNIC Region origin ASes present in the Internet Routing Table: 445
AfriNIC Prefixes per ASN: 13.64
AfriNIC Region origin ASes announcing only one prefix: 133
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: 22761728
Equivalent to 1 /8s, 91 /16s and 81 /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 1498 300 81 TPG Internet Pty Ltd
17974 1464 470 34 PT Telekomunikasi Indonesia
4755 1444 638 166 TATA Communications formerly
24560 1137 322 203 Bharti Airtel Ltd., Telemedia
9583 1058 78 496 Sify Limited
9829 1003 868 53 National Internet Backbone
4808 950 2028 277 CNCGROUP IP network China169
17488 940 164 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 3662 3822 258 BellSouth.net Inc.
4323 2648 1106 397 tw telecom holdings, inc.
1785 1791 681 128 PaeTec Communications, Inc.
18566 1707 338 239 Covad Communications Co.
6478 1624 307 35 AT&T Services, Inc.
20115 1533 1551 638 Charter Communications
19262 1495 4949 298 Verizon Online LLC
7018 1368 6963 896 AT&T Services, Inc.
22773 1297 2865 84 Cox Communications Inc.
2386 1270 536 911 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 449 1997 387 TDC Data Networks
8866 446 134 26 Bulgarian Telecommunication C
20940 440 127 338 Akamai Technologies European
3320 417 7607 363 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 1426 265 157 Types of queries are: POCs, o
28573 1261 972 86 Types of queries are: POCs, o
8151 1231 2667 364 Uninet S.A. de C.V.
7303 904 466 137 Telecom Argentina S.A.
6503 895 354 65 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 517 225 97 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
33776 227 13 5 Starcomms Nigeria Limited
24835 220 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 3662 3822 258 BellSouth.net Inc.
4323 2648 1106 397 tw telecom holdings, inc.
23456 2197 644 1210 32-bit ASN transition
4766 1869 9476 598 Korea Telecom (KIX)
1785 1791 681 128 PaeTec Communications, Inc.
18566 1707 338 239 Covad Communications Co.
6478 1624 307 35 AT&T Services, Inc.
20115 1533 1551 638 Charter Communications
7545 1498 300 81 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 2648 2251 tw telecom holdings, inc.
1785 1791 1663 PaeTec Communications, Inc.
6478 1624 1589 AT&T Services, Inc.
18566 1707 1468 Covad Communications Co.
17974 1464 1430 PT Telekomunikasi Indonesia
7545 1498 1417 TPG Internet Pty Ltd
4755 1444 1278 TATA Communications formerly
4766 1869 1271 Korea Telecom (KIX)
10620 1426 1269 Types of queries are: POCs, o
11492 1263 1248 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
41.57.192.0/18 22750 BCSNET
41.222.79.0/24 36938 >>UNKNOWN<<
41.223.92.0/22 36936 >>UNKNOWN<<
45.127.0.0/16 13767 DataBank Holdings, Ltd.
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 /12:218
/13:452 /14:773 /15:1376 /16:11574 /17:5726 /18:9407
/19:19242 /20:25175 /21:25470 /22:33444 /23:32256 /24:183392
/25:11 /26:17 /27:24 /28:155 /29:95 /30:52
/31:0 /32:108
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2258 3662 BellSouth.net Inc.
18566 1681 1707 Covad Communications Co.
6478 1578 1624 AT&T Services, Inc.
4323 1343 2648 tw telecom holdings, inc.
10620 1316 1426 Types of queries are: POCs, o
11492 1212 1263 CABLE ONE, INC.
23456 1127 2197 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 2:65 4:14 5:1 8:349 12:2006
13:1 14:424 15:15 16:3 17:8 20:9
23:5 24:1602 27:720 31:221 32:55 33:2
34:2 37:1 38:760 40:101 41:2396 42:1
44:3 46:850 47:4 49:173 50:358 52:13
55:4 56:2 57:30 58:794 59:469 60:385
61:1050 62:1009 63:1917 64:3895 65:2322 66:4338
67:1813 68:1080 69:2953 70:699 71:345 72:1907
73:1 74:2336 75:299 76:337 77:839 78:690
79:472 80:1087 81:830 82:508 83:458 84:647
85:1079 86:563 87:769 88:331 89:1587 90:181
91:3709 92:511 93:1063 94:1257 95:783 96:450
97:250 98:821 99:35 101:54 103:1 106:1
107:4 108:84 109:948 110:537 111:681 112:297
113:386 114:500 115:673 116:918 117:654 118:764
119:1130 120:287 121:651 122:1624 123:975 124:1222
125:1251 128:213 129:158 130:166 131:563 132:104
133:20 134:209 135:49 136:211 137:139 138:301
139:101 140:464 141:174 142:382 143:390 144:481
145:53 146:437 147:204 148:584 149:232 150:162
151:187 152:303 153:180 154:2 155:394 156:187
157:325 158:132 159:375 160:315 161:236 162:276
163:154 164:488 165:348 166:513 167:427 168:719
169:153 170:776 171:75 172:1 173:1493 174:530
175:346 177:71 178:854 180:805 181:7 182:414
183:197 184:251 185:1 186:1121 187:791 188:988
189:1000 190:4820 192:5727 193:4829 194:3460 195:2961
196:1205 197:16 198:3508 199:3883 200:5503 201:1493
202:8100 203:8318 204:4043 205:2301 206:2630 207:2952
208:3947 209:3467 210:2660 211:1352 212:1997 213:1723
214:732 215:67 216:4841 217:1657 218:544 219:383
220:1194 221:456 222:305 223:122
End of report
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