Routing Table Report 08:00 +10GMT Sat 30 Apr, 2011
Report Website: http://thyme.rand.apnic.net
Detailed Analysis: http://thyme.rand.apnic.net/london/
Analysis Summary
----------------
BGP routing table entries examined: 350573
Prefixes after maximum aggregation: 159103
Deaggregation factor: 2.20
Unique aggregates announced to Internet: 175719
Total ASes present in the Internet Routing Table: 36239
Prefixes per ASN: 9.67
Origin-only ASes present in the Internet Routing Table: 31332
Origin ASes announcing only one prefix: 15075
Transit ASes present in the Internet Routing Table: 4907
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: 27
Max AS path prepend of ASN (32374) 19
Prefixes from unregistered ASNs in the Routing Table: 1958
Unregistered ASNs in the Routing Table: 389
Number of 32-bit ASNs allocated by the RIRs: 1317
Number of 32-bit ASNs visible in the Routing Table: 0
Prefixes from 32-bit ASNs in the Routing Table: 2295
Special use prefixes present in the Routing Table: 6
Prefixes being announced from unallocated address space: 150
Number of addresses announced to Internet: 2437687040
Equivalent to 145 /8s, 76 /16s and 39 /24s
Percentage of available address space announced: 65.8
Percentage of allocated address space announced: 65.8
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 90.6
Total number of prefixes smaller than registry allocations: 143999
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 84809
Total APNIC prefixes after maximum aggregation: 28579
APNIC Deaggregation factor: 2.97
Prefixes being announced from the APNIC address blocks: 82072
Unique aggregates announced from the APNIC address blocks: 36843
APNIC Region origin ASes present in the Internet Routing Table: 4374
APNIC Prefixes per ASN: 18.76
APNIC Region origin ASes announcing only one prefix: 1240
APNIC Region transit ASes present in the Internet Routing Table: 667
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: 610685440
Equivalent to 36 /8s, 102 /16s and 82 /24s
Percentage of available APNIC address space announced: 77.4
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: 138869
Total ARIN prefixes after maximum aggregation: 70753
ARIN Deaggregation factor: 1.96
Prefixes being announced from the ARIN address blocks: 111561
Unique aggregates announced from the ARIN address blocks: 45218
ARIN Region origin ASes present in the Internet Routing Table: 14263
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: 1415
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: 799825152
Equivalent to 47 /8s, 172 /16s and 93 /24s
Percentage of available ARIN address space announced: 63.6
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: 84422
Total RIPE prefixes after maximum aggregation: 47915
RIPE Deaggregation factor: 1.76
Prefixes being announced from the RIPE address blocks: 77576
Unique aggregates announced from the RIPE address blocks: 51123
RIPE Region origin ASes present in the Internet Routing Table: 15558
RIPE Prefixes per ASN: 4.99
RIPE Region origin ASes announcing only one prefix: 7806
RIPE Region transit ASes present in the Internet Routing Table: 2417
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: 467522048
Equivalent to 27 /8s, 221 /16s and 210 /24s
Percentage of available RIPE address space announced: 75.3
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: 32128
Total LACNIC prefixes after maximum aggregation: 7363
LACNIC Deaggregation factor: 4.36
Prefixes being announced from the LACNIC address blocks: 31293
Unique aggregates announced from the LACNIC address blocks: 16522
LACNIC Region origin ASes present in the Internet Routing Table: 1432
LACNIC Prefixes per ASN: 21.85
LACNIC Region origin ASes announcing only one prefix: 433
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: 19
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 0
Number of LACNIC addresses announced to Internet: 82860800
Equivalent to 4 /8s, 240 /16s and 91 /24s
Percentage of available LACNIC address space announced: 54.9
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: 7368
Total AfriNIC prefixes after maximum aggregation: 1888
AfriNIC Deaggregation factor: 3.90
Prefixes being announced from the AfriNIC address blocks: 5723
Unique aggregates announced from the AfriNIC address blocks: 1995
AfriNIC Region origin ASes present in the Internet Routing Table: 446
AfriNIC Prefixes per ASN: 12.83
AfriNIC Region origin ASes announcing only one prefix: 134
AfriNIC Region transit ASes present in the Internet Routing Table: 97
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: 23319296
Equivalent to 1 /8s, 99 /16s and 211 /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 1872 9474 600 Korea Telecom (KIX)
17974 1496 470 33 PT Telekomunikasi Indonesia
7545 1470 301 81 TPG Internet Pty Ltd
4755 1458 634 166 TATA Communications formerly
7552 1215 1064 7 Vietel Corporation
24560 1158 336 190 Bharti Airtel Ltd., Telemedia
9583 1057 78 493 Sify Limited
9829 1007 870 50 National Internet Backbone
4808 948 2020 277 CNCGROUP IP network China169
17488 942 165 100 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 3646 3822 257 BellSouth.net Inc.
4323 2629 1102 398 tw telecom holdings, inc.
1785 1794 681 128 PaeTec Communications, Inc.
18566 1737 340 231 Covad Communications Co.
6478 1658 311 46 AT&T Services, Inc.
20115 1534 1552 641 Charter Communications
19262 1495 4949 298 Verizon Online LLC
7018 1353 6942 896 AT&T Services, Inc.
22773 1299 2865 84 Cox Communications Inc.
2386 1270 536 912 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 540 326 30 Goldenlines main autonomous s
6830 518 1780 321 UPC Broadband
34984 509 106 182 BILISIM TELEKOM
3292 457 1997 391 TDC Data Networks
29049 450 33 48 AzerSat LLC.
8866 446 134 26 Bulgarian Telecommunication C
20940 446 131 341 Akamai Technologies European
3320 422 7609 367 Deutsche Telekom AG
12479 408 577 6 France Telecom Espana SA
8551 407 356 39 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 1448 268 160 Types of queries are: POCs, o
28573 1271 988 87 Types of queries are: POCs, o
8151 1231 2671 360 Uninet S.A. de C.V.
7303 904 466 137 Telecom Argentina S.A.
6503 851 354 74 Axtel, S.A.B. de C.V.
14420 665 53 91 CORPORACION NACIONAL DE TELEC
22047 564 310 15 Types of queries are: POCs, o
3816 517 226 97 Types of queries are: POCs, o
14117 492 46 43 Telefonica del Sur S.A.
11172 486 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 880 445 11 TEDATA
24863 776 147 37 LINKdotNET AS number
3741 267 985 227 The Internet Solution
6713 240 215 13 Itissalat Al-MAGHRIB
24835 211 78 10 RAYA Telecom - Egypt
33776 208 12 10 Starcomms Nigeria Limited
36992 205 413 18 Etisalat MISR
15475 170 79 44 Nile Online
29571 161 17 11 Ci Telecom Autonomous system
16637 148 441 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 3646 3822 257 BellSouth.net Inc.
4323 2629 1102 398 tw telecom holdings, inc.
23456 2295 658 1254 32-bit ASN transition
4766 1872 9474 600 Korea Telecom (KIX)
1785 1794 681 128 PaeTec Communications, Inc.
18566 1737 340 231 Covad Communications Co.
6478 1658 311 46 AT&T Services, Inc.
20115 1534 1552 641 Charter Communications
17974 1496 470 33 PT Telekomunikasi Indonesia
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 2629 2231 tw telecom holdings, inc.
1785 1794 1666 PaeTec Communications, Inc.
6478 1658 1612 AT&T Services, Inc.
18566 1737 1506 Covad Communications Co.
17974 1496 1463 PT Telekomunikasi Indonesia
7545 1470 1389 TPG Internet Pty Ltd
4755 1458 1292 TATA Communications formerly
10620 1448 1288 Types of queries are: POCs, o
4766 1872 1272 Korea Telecom (KIX)
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
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
31.200.248.0/21 45005 Gorizont LLC
31.204.128.0/19 49544 Interactive3D
31.205.0.0/16 41230 Ask4 Limited
41.222.79.0/24 36938 >>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
/13:459 /14:789 /15:1386 /16:11639 /17:5743 /18:9575
/19:19277 /20:25619 /21:25571 /22:33600 /23:32347 /24:183743
/25:11 /26:17 /27:23 /28:156 /29:93 /30:50
/31:0 /32:116
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2246 3646 BellSouth.net Inc.
18566 1711 1737 Covad Communications Co.
6478 1612 1658 AT&T Services, Inc.
10620 1338 1448 Types of queries are: POCs, o
4323 1330 2629 tw telecom holdings, inc.
11492 1207 1258 CABLE ONE, INC.
23456 1151 2295 32-bit ASN transition
7011 1062 1161 Frontier Communications of Am
1785 1059 1794 PaeTec Communications, Inc.
22773 843 1299 Cox Communications Inc.
Complete listing at http://thyme.rand.apnic.net/london/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:262 2:51 4:14 5:1 6:3 8:351
12:1985 13:1 14:433 15:15 16:3 17:8
20:9 23:5 24:1610 27:714 31:233 32:55
33:3 34:2 37:1 38:761 40:101 41:2426
42:5 44:3 46:883 47:4 49:170 50:375
52:13 55:5 56:2 57:29 58:789 59:476
60:354 61:1092 62:900 63:1928 64:3929 65:2318
66:4363 67:1868 68:1076 69:2970 70:703 71:346
72:1893 73:1 74:2358 75:298 76:335 77:837
78:679 79:463 80:1088 81:816 82:482 83:464
84:553 85:1081 86:564 87:759 88:323 89:1596
90:183 91:3715 92:513 93:1060 94:1267 95:796
96:473 97:254 98:822 99:35 101:60 103:5
106:1 107:6 108:83 109:942 110:552 111:697
112:311 113:395 114:529 115:674 116:933 117:680
118:775 119:1133 120:304 121:648 122:1620 123:1055
124:1248 125:1203 128:212 129:158 130:165 131:565
132:100 133:19 134:209 135:49 136:211 137:138
138:302 139:104 140:448 141:174 142:384 143:397
144:484 145:52 146:433 147:206 148:581 149:242
150:163 151:187 152:307 153:179 154:2 155:396
156:187 157:324 158:132 159:377 160:313 161:240
162:276 163:152 164:494 165:349 166:511 167:427
168:716 169:152 170:785 171:76 172:1 173:1511
174:535 175:349 177:82 178:849 180:809 181:15
182:423 183:204 184:258 185:1 186:1135 187:789
188:989 189:970 190:4834 192:5735 193:4843 194:3466
195:2972 196:1206 197:16 198:3515 199:3875 200:5501
201:1499 202:8148 203:8323 204:4060 205:2299 206:2650
207:2958 208:3940 209:3454 210:2652 211:1380 212:1980
213:1674 214:735 215:67 216:4854 217:1560 218:552
219:372 220:1198 221:468 222:306 223:143
End of report
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