Routing Table Report 08:00 +10GMT Tue 19 Apr, 2011
Report Website: http://thyme.rand.apnic.net
Detailed Analysis: http://thyme.rand.apnic.net/london/
Analysis Summary
----------------
BGP routing table entries examined: 349331
Prefixes after maximum aggregation: 158482
Deaggregation factor: 2.20
Unique aggregates announced to Internet: 174757
Total ASes present in the Internet Routing Table: 36159
Prefixes per ASN: 9.66
Origin-only ASes present in the Internet Routing Table: 31275
Origin ASes announcing only one prefix: 15043
Transit ASes present in the Internet Routing Table: 4884
Transit-only ASes present in the Internet Routing Table: 107
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: 1988
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: 2198
Special use prefixes present in the Routing Table: 6
Prefixes being announced from unallocated address space: 147
Number of addresses announced to Internet: 2430030848
Equivalent to 144 /8s, 215 /16s and 84 /24s
Percentage of available address space announced: 65.6
Percentage of allocated address space announced: 65.6
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: 143529
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 83742
Total APNIC prefixes after maximum aggregation: 28486
APNIC Deaggregation factor: 2.94
Prefixes being announced from the APNIC address blocks: 81569
Unique aggregates announced from the APNIC address blocks: 36719
APNIC Region origin ASes present in the Internet Routing Table: 4359
APNIC Prefixes per ASN: 18.71
APNIC Region origin ASes announcing only one prefix: 1235
APNIC Region transit ASes present in the Internet Routing Table: 661
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: 609157120
Equivalent to 36 /8s, 79 /16s and 0 /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: 138517
Total ARIN prefixes after maximum aggregation: 70567
ARIN Deaggregation factor: 1.96
Prefixes being announced from the ARIN address blocks: 111306
Unique aggregates announced from the ARIN address blocks: 45093
ARIN Region origin ASes present in the Internet Routing Table: 14245
ARIN Prefixes per ASN: 7.81
ARIN Region origin ASes announcing only one prefix: 5450
ARIN Region transit ASes present in the Internet Routing Table: 1411
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: 797885184
Equivalent to 47 /8s, 142 /16s and 195 /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: 84344
Total RIPE prefixes after maximum aggregation: 47758
RIPE Deaggregation factor: 1.77
Prefixes being announced from the RIPE address blocks: 77446
Unique aggregates announced from the RIPE address blocks: 50702
RIPE Region origin ASes present in the Internet Routing Table: 15519
RIPE Prefixes per ASN: 4.99
RIPE Region origin ASes announcing only one prefix: 7790
RIPE Region transit ASes present in the Internet Routing Table: 2408
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: 466297344
Equivalent to 27 /8s, 203 /16s and 34 /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: 32082
Total LACNIC prefixes after maximum aggregation: 7335
LACNIC Deaggregation factor: 4.37
Prefixes being announced from the LACNIC address blocks: 31196
Unique aggregates announced from the LACNIC address blocks: 16421
LACNIC Region origin ASes present in the Internet Routing Table: 1429
LACNIC Prefixes per ASN: 21.83
LACNIC Region origin ASes announcing only one prefix: 433
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: 82307072
Equivalent to 4 /8s, 231 /16s and 232 /24s
Percentage of available LACNIC address space announced: 54.5
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: 7710
Total AfriNIC prefixes after maximum aggregation: 1824
AfriNIC Deaggregation factor: 4.23
Prefixes being announced from the AfriNIC address blocks: 6055
Unique aggregates announced from the AfriNIC address blocks: 1881
AfriNIC Region origin ASes present in the Internet Routing Table: 446
AfriNIC Prefixes per ASN: 13.58
AfriNIC Region origin ASes announcing only one prefix: 135
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: 23282432
Equivalent to 1 /8s, 99 /16s and 67 /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 1870 9476 599 Korea Telecom (KIX)
7545 1496 300 80 TPG Internet Pty Ltd
17974 1469 470 34 PT Telekomunikasi Indonesia
4755 1443 638 166 TATA Communications formerly
24560 1138 322 203 Bharti Airtel Ltd., Telemedia
9583 1058 78 496 Sify Limited
9829 1008 870 50 National Internet Backbone
17488 940 164 98 Hathway IP Over Cable Interne
18101 935 116 139 Reliance Infocom Ltd Internet
4808 924 2028 276 CNCGROUP IP network China169
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 3663 3822 256 BellSouth.net Inc.
4323 2647 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 1534 1550 639 Charter Communications
19262 1495 4949 298 Verizon Online LLC
7018 1367 6963 898 AT&T Services, Inc.
22773 1298 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 517 1780 320 UPC Broadband
34984 508 106 182 BILISIM TELEKOM
29049 465 33 37 AzerSat LLC.
3292 455 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 1427 265 157 Types of queries are: POCs, o
28573 1262 988 87 Types of queries are: POCs, o
8151 1230 2667 366 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
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 837 445 11 TEDATA
24863 775 147 37 LINKdotNET AS number
15475 431 90 8 Nile Online
36992 297 415 13 Etisalat MISR
3741 267 985 227 The Internet Solution
6713 235 215 13 Itissalat Al-MAGHRIB
33776 227 13 5 Starcomms Nigeria Limited
24835 219 78 10 RAYA Telecom - Egypt
29571 161 17 11 Ci Telecom Autonomous system
16637 145 440 84 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 3663 3822 256 BellSouth.net Inc.
4323 2647 1106 397 tw telecom holdings, inc.
23456 2198 646 1208 32-bit ASN transition
4766 1870 9476 599 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 1534 1550 639 Charter Communications
7545 1496 300 80 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 2647 2250 tw telecom holdings, inc.
1785 1791 1663 PaeTec Communications, Inc.
6478 1624 1589 AT&T Services, Inc.
18566 1707 1468 Covad Communications Co.
17974 1469 1435 PT Telekomunikasi Indonesia
7545 1496 1416 TPG Internet Pty Ltd
4755 1443 1277 TATA Communications formerly
4766 1870 1271 Korea Telecom (KIX)
10620 1427 1270 Types of queries are: POCs, o
11492 1261 1246 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
31.12.96.0/19 29550 Simply Transit Ltd
31.13.0.0/21 29550 Simply Transit Ltd
41.222.79.0/24 36938 >>UNKNOWN<<
41.223.92.0/22 36936 >>UNKNOWN<<
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 /11:78 /12:220
/13:453 /14:774 /15:1376 /16:11579 /17:5731 /18:9414
/19:19256 /20:25189 /21:25490 /22:33454 /23:32221 /24:183564
/25:11 /26:17 /27:24 /28:159 /29:94 /30:50
/31:0 /32:116
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2259 3663 BellSouth.net Inc.
18566 1681 1707 Covad Communications Co.
6478 1578 1624 AT&T Services, Inc.
4323 1342 2647 tw telecom holdings, inc.
10620 1317 1427 Types of queries are: POCs, o
11492 1210 1261 CABLE ONE, INC.
23456 1126 2198 32-bit ASN transition
7011 1062 1161 Frontier Communications of Am
1785 1058 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)
----------------------------------------------
1:255 2:53 4:14 5:1 6:1 8:347
12:2010 13:1 14:422 15:15 16:3 17:8
20:9 23:5 24:1603 27:687 31:221 32:55
33:3 34:2 37:1 38:760 40:101 41:2392
42:1 44:3 46:854 47:4 49:173 50:358
52:13 55:5 56:2 57:30 58:783 59:468
60:385 61:1061 62:1010 63:1916 64:3896 65:2321
66:4338 67:1821 68:1080 69:2952 70:699 71:345
72:1906 73:1 74:2340 75:298 76:336 77:832
78:691 79:471 80:1103 81:830 82:508 83:457
84:650 85:1078 86:557 87:769 88:331 89:1573
90:181 91:3714 92:513 93:1062 94:1254 95:782
96:451 97:251 98:818 99:35 101:54 103:1
106:1 107:4 108:84 109:951 110:538 111:682
112:317 113:387 114:502 115:673 116:920 117:655
118:768 119:1133 120:286 121:651 122:1633 123:1048
124:1222 125:1253 128:212 129:159 130:165 131:564
132:104 133:20 134:210 135:49 136:211 137:139
138:301 139:101 140:464 141:174 142:382 143:388
144:482 145:53 146:436 147:204 148:578 149:232
150:162 151:187 152:305 153:180 154:2 155:394
156:188 157:326 158:132 159:375 160:315 161:235
162:276 163:154 164:486 165:348 166:512 167:427
168:720 169:153 170:778 171:75 172:1 173:1494
174:530 175:347 177:72 178:854 180:809 181:7
182:414 183:197 184:253 185:1 186:1139 187:787
188:991 189:996 190:4825 192:5733 193:4826 194:3462
195:2963 196:1208 197:16 198:3513 199:3886 200:5515
201:1494 202:8107 203:8319 204:4053 205:2306 206:2648
207:2953 208:3947 209:3474 210:2654 211:1357 212:1998
213:1720 214:734 215:67 216:4838 217:1658 218:545
219:383 220:1191 221:452 222:304 223:123
End of report
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