Routing Table Report 08:00 +10GMT Fri 22 Apr, 2011
Report Website: http://thyme.rand.apnic.net
Detailed Analysis: http://thyme.rand.apnic.net/london/
Analysis Summary
----------------
BGP routing table entries examined: 350080
Prefixes after maximum aggregation: 158734
Deaggregation factor: 2.21
Unique aggregates announced to Internet: 175032
Total ASes present in the Internet Routing Table: 36184
Prefixes per ASN: 9.67
Origin-only ASes present in the Internet Routing Table: 31283
Origin ASes announcing only one prefix: 15064
Transit ASes present in the Internet Routing Table: 4901
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 (32374) 19
Prefixes from unregistered ASNs in the Routing Table: 1949
Unregistered ASNs in the Routing Table: 372
Number of 32-bit ASNs allocated by the RIRs: 1310
Number of 32-bit ASNs visible in the Routing Table: 0
Prefixes from 32-bit ASNs in the Routing Table: 2270
Special use prefixes present in the Routing Table: 6
Prefixes being announced from unallocated address space: 150
Number of addresses announced to Internet: 2433969408
Equivalent to 145 /8s, 19 /16s and 109 /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: 143947
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 84480
Total APNIC prefixes after maximum aggregation: 28572
APNIC Deaggregation factor: 2.96
Prefixes being announced from the APNIC address blocks: 81806
Unique aggregates announced from the APNIC address blocks: 36764
APNIC Region origin ASes present in the Internet Routing Table: 4362
APNIC Prefixes per ASN: 18.75
APNIC Region origin ASes announcing only one prefix: 1232
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: 20
Number of APNIC region 32-bit ASNs visible in the Routing Table: 0
Number of APNIC addresses announced to Internet: 609615360
Equivalent to 36 /8s, 85 /16s and 254 /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: 138686
Total ARIN prefixes after maximum aggregation: 70612
ARIN Deaggregation factor: 1.96
Prefixes being announced from the ARIN address blocks: 111433
Unique aggregates announced from the ARIN address blocks: 45132
ARIN Region origin ASes present in the Internet Routing Table: 14258
ARIN Prefixes per ASN: 7.82
ARIN Region origin ASes announcing only one prefix: 5462
ARIN Region transit ASes present in the Internet Routing Table: 1419
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: 798490624
Equivalent to 47 /8s, 152 /16s and 0 /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: 84250
Total RIPE prefixes after maximum aggregation: 47807
RIPE Deaggregation factor: 1.76
Prefixes being announced from the RIPE address blocks: 77366
Unique aggregates announced from the RIPE address blocks: 50860
RIPE Region origin ASes present in the Internet Routing Table: 15528
RIPE Prefixes per ASN: 4.98
RIPE Region origin ASes announcing only one prefix: 7800
RIPE Region transit ASes present in the Internet Routing Table: 2413
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: 466633728
Equivalent to 27 /8s, 208 /16s and 68 /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: 31995
Total LACNIC prefixes after maximum aggregation: 7347
LACNIC Deaggregation factor: 4.35
Prefixes being announced from the LACNIC address blocks: 31147
Unique aggregates announced from the LACNIC address blocks: 16446
LACNIC Region origin ASes present in the Internet Routing Table: 1429
LACNIC Prefixes per ASN: 21.80
LACNIC Region origin ASes announcing only one prefix: 436
LACNIC Region transit ASes present in the Internet Routing Table: 249
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: 82610944
Equivalent to 4 /8s, 236 /16s and 139 /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: 7708
Total AfriNIC prefixes after maximum aggregation: 1833
AfriNIC Deaggregation factor: 4.21
Prefixes being announced from the AfriNIC address blocks: 6080
Unique aggregates announced from the AfriNIC address blocks: 1880
AfriNIC Region origin ASes present in the Internet Routing Table: 439
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: 94
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: 23308032
Equivalent to 1 /8s, 99 /16s and 167 /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 1471 470 34 PT Telekomunikasi Indonesia
4755 1451 634 166 TATA Communications formerly
7545 1439 300 80 TPG Internet Pty Ltd
7552 1194 1064 7 Vietel Corporation
24560 1138 322 203 Bharti Airtel Ltd., Telemedia
9583 1056 78 494 Sify Limited
9829 1008 870 50 National Internet Backbone
4808 945 2027 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 3656 3822 256 BellSouth.net Inc.
4323 2648 1106 399 tw telecom holdings, inc.
1785 1792 681 128 PaeTec Communications, Inc.
18566 1707 338 239 Covad Communications Co.
6478 1635 308 42 AT&T Services, Inc.
20115 1535 1552 638 Charter Communications
19262 1492 4933 308 Verizon Online LLC
7018 1370 6962 898 AT&T Services, Inc.
22773 1298 2865 84 Cox Communications Inc.
2386 1272 536 913 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 466 33 37 AzerSat LLC.
3292 455 1997 391 TDC Data Networks
8866 446 134 26 Bulgarian Telecommunication C
20940 443 130 338 Akamai Technologies European
3320 422 7609 367 Deutsche Telekom AG
8551 407 356 39 Bezeq International
12479 407 577 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 1437 268 160 Types of queries are: POCs, o
28573 1264 988 87 Types of queries are: POCs, o
8151 1230 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
11172 485 99 81 Alestra, S. de R.L. de C.V.
13489 480 223 104 EPM Telecomunicaciones S.A. E
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 836 445 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 216 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 3656 3822 256 BellSouth.net Inc.
4323 2648 1106 399 tw telecom holdings, inc.
23456 2270 653 1233 32-bit ASN transition
4766 1868 9474 600 Korea Telecom (KIX)
1785 1792 681 128 PaeTec Communications, Inc.
18566 1707 338 239 Covad Communications Co.
6478 1635 308 42 AT&T Services, Inc.
20115 1535 1552 638 Charter Communications
19262 1492 4933 308 Verizon Online LLC
17974 1471 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 1792 1664 PaeTec Communications, Inc.
6478 1635 1593 AT&T Services, Inc.
18566 1707 1468 Covad Communications Co.
17974 1471 1437 PT Telekomunikasi Indonesia
7545 1439 1359 TPG Internet Pty Ltd
4755 1451 1285 TATA Communications formerly
10620 1437 1277 Types of queries are: POCs, o
4766 1868 1268 Korea Telecom (KIX)
11492 1265 1250 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
31.15.128.0/17 12644 Telemach Autonomous System
31.192.112.0/20 30361 Swiftwill, Inc.
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 /11:77 /12:221
/13:458 /14:782 /15:1379 /16:11628 /17:5731 /18:9538
/19:19266 /20:25599 /21:25488 /22:33480 /23:32272 /24:183625
/25:11 /26:17 /27:23 /28:160 /29:94 /30:51
/31:0 /32:119
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2256 3656 BellSouth.net Inc.
18566 1681 1707 Covad Communications Co.
6478 1589 1635 AT&T Services, Inc.
4323 1344 2648 tw telecom holdings, inc.
10620 1327 1437 Types of queries are: POCs, o
11492 1214 1265 CABLE ONE, INC.
23456 1139 2270 32-bit ASN transition
7011 1062 1161 Frontier Communications of Am
1785 1059 1792 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)
----------------------------------------------
1:261 2:26 4:14 5:1 6:1 8:347
12:2009 13:1 14:419 15:15 16:3 17:8
20:9 23:5 24:1607 27:721 31:223 32:55
33:3 34:2 37:1 38:760 40:101 41:2405
42:1 44:3 46:864 47:4 49:177 50:365
52:13 55:4 56:2 57:29 58:795 59:466
60:354 61:1087 62:985 63:1912 64:3900 65:2323
66:4341 67:1855 68:1081 69:2971 70:698 71:345
72:1906 73:1 74:2349 75:297 76:336 77:844
78:677 79:462 80:1094 81:829 82:504 83:456
84:646 85:1083 86:561 87:770 88:331 89:1569
90:183 91:3699 92:514 93:1063 94:1262 95:766
96:457 97:251 98:820 99:35 101:56 103:5
106:1 107:5 108:84 109:931 110:548 111:687
112:317 113:390 114:503 115:674 116:930 117:669
118:768 119:1142 120:299 121:648 122:1624 123:1054
124:1222 125:1255 128:213 129:159 130:166 131:562
132:104 133:19 134:209 135:49 136:211 137:139
138:301 139:102 140:448 141:174 142:382 143:387
144:480 145:52 146:436 147:205 148:571 149:232
150:161 151:187 152:305 153:180 154:2 155:388
156:188 157:324 158:132 159:375 160:315 161:235
162:276 163:152 164:489 165:348 166:511 167:426
168:714 169:152 170:779 171:77 172:1 173:1498
174:531 175:347 177:79 178:856 180:809 181:9
182:418 183:200 184:252 185:1 186:1142 187:811
188:987 189:1000 190:4761 192:5742 193:4830 194:3453
195:2965 196:1195 197:16 198:3514 199:3885 200:5467
201:1481 202:8116 203:8332 204:4056 205:2304 206:2643
207:2957 208:3957 209:3479 210:2655 211:1373 212:1990
213:1713 214:735 215:67 216:4863 217:1657 218:551
219:372 220:1191 221:465 222:305 223:128
End of report
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