Routing Table Report 08:00 +10GMT Thu 28 Apr, 2011
Report Website: http://thyme.rand.apnic.net
Detailed Analysis: http://thyme.rand.apnic.net/london/
Analysis Summary
----------------
BGP routing table entries examined: 350624
Prefixes after maximum aggregation: 158951
Deaggregation factor: 2.21
Unique aggregates announced to Internet: 175528
Total ASes present in the Internet Routing Table: 36241
Prefixes per ASN: 9.67
Origin-only ASes present in the Internet Routing Table: 31341
Origin ASes announcing only one prefix: 15093
Transit ASes present in the Internet Routing Table: 4900
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: 1967
Unregistered ASNs in the Routing Table: 386
Number of 32-bit ASNs allocated by the RIRs: 1311
Number of 32-bit ASNs visible in the Routing Table: 0
Prefixes from 32-bit ASNs in the Routing Table: 2281
Special use prefixes present in the Routing Table: 6
Prefixes being announced from unallocated address space: 150
Number of addresses announced to Internet: 2437199616
Equivalent to 145 /8s, 68 /16s and 183 /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: 144276
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 84530
Total APNIC prefixes after maximum aggregation: 28550
APNIC Deaggregation factor: 2.96
Prefixes being announced from the APNIC address blocks: 81841
Unique aggregates announced from the APNIC address blocks: 36826
APNIC Region origin ASes present in the Internet Routing Table: 4370
APNIC Prefixes per ASN: 18.73
APNIC Region origin ASes announcing only one prefix: 1237
APNIC Region transit ASes present in the Internet Routing Table: 668
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: 610274304
Equivalent to 36 /8s, 96 /16s and 12 /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: 138776
Total ARIN prefixes after maximum aggregation: 70753
ARIN Deaggregation factor: 1.96
Prefixes being announced from the ARIN address blocks: 111422
Unique aggregates announced from the ARIN address blocks: 45222
ARIN Region origin ASes present in the Internet Routing Table: 14267
ARIN Prefixes per ASN: 7.81
ARIN Region origin ASes announcing only one prefix: 5462
ARIN Region transit ASes present in the Internet Routing Table: 1416
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: 799728384
Equivalent to 47 /8s, 170 /16s and 227 /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: 84404
Total RIPE prefixes after maximum aggregation: 47889
RIPE Deaggregation factor: 1.76
Prefixes being announced from the RIPE address blocks: 77577
Unique aggregates announced from the RIPE address blocks: 51094
RIPE Region origin ASes present in the Internet Routing Table: 15559
RIPE Prefixes per ASN: 4.99
RIPE Region origin ASes announcing only one prefix: 7825
RIPE Region transit ASes present in the Internet Routing Table: 2406
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: 467369472
Equivalent to 27 /8s, 219 /16s and 126 /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: 32199
Total LACNIC prefixes after maximum aggregation: 7332
LACNIC Deaggregation factor: 4.39
Prefixes being announced from the LACNIC address blocks: 31350
Unique aggregates announced from the LACNIC address blocks: 16501
LACNIC Region origin ASes present in the Internet Routing Table: 1431
LACNIC Prefixes per ASN: 21.91
LACNIC Region origin ASes announcing only one prefix: 434
LACNIC Region transit ASes present in the Internet Routing Table: 247
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: 82605312
Equivalent to 4 /8s, 236 /16s and 117 /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: 7741
Total AfriNIC prefixes after maximum aggregation: 1838
AfriNIC Deaggregation factor: 4.21
Prefixes being announced from the AfriNIC address blocks: 6093
Unique aggregates announced from the AfriNIC address blocks: 1894
AfriNIC Region origin ASes present in the Internet Routing Table: 446
AfriNIC Prefixes per ASN: 13.66
AfriNIC Region origin ASes announcing only one prefix: 135
AfriNIC Region transit ASes present in the Internet Routing Table: 96
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: 23371264
Equivalent to 1 /8s, 100 /16s and 158 /24s
Percentage of available AfriNIC address space announced: 34.8
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 1871 9474 599 Korea Telecom (KIX)
17974 1493 470 34 PT Telekomunikasi Indonesia
7545 1470 300 80 TPG Internet Pty Ltd
4755 1456 634 166 TATA Communications formerly
7552 1195 1064 7 Vietel Corporation
24560 1157 328 189 Bharti Airtel Ltd., Telemedia
9583 1056 78 494 Sify Limited
9829 1002 868 53 National Internet Backbone
4808 944 2019 276 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 3649 3822 257 BellSouth.net Inc.
4323 2627 1102 398 tw telecom holdings, inc.
1785 1793 681 128 PaeTec Communications, Inc.
18566 1723 339 236 Covad Communications Co.
6478 1648 310 46 AT&T Services, Inc.
20115 1534 1552 641 Charter Communications
19262 1495 4949 298 Verizon Online LLC
7018 1366 6960 898 AT&T Services, Inc.
22773 1299 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 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 444 130 339 Akamai Technologies European
3320 422 7609 367 Deutsche Telekom AG
12479 409 577 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 1444 268 160 Types of queries are: POCs, o
28573 1270 988 87 Types of queries are: POCs, o
8151 1231 2669 360 Uninet S.A. de C.V.
6503 904 354 73 Axtel, S.A.B. de C.V.
7303 904 466 137 Telecom Argentina S.A.
14420 665 53 91 CORPORACION NACIONAL DE TELEC
22047 566 310 15 Types of queries are: POCs, o
3816 518 226 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 876 445 11 TEDATA
24863 761 147 37 LINKdotNET AS number
15475 429 90 8 Nile Online
36992 300 415 13 Etisalat MISR
3741 267 985 227 The Internet Solution
6713 239 215 13 Itissalat Al-MAGHRIB
33776 227 13 5 Starcomms Nigeria Limited
24835 218 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 3649 3822 257 BellSouth.net Inc.
4323 2627 1102 398 tw telecom holdings, inc.
23456 2281 653 1246 32-bit ASN transition
4766 1871 9474 599 Korea Telecom (KIX)
1785 1793 681 128 PaeTec Communications, Inc.
18566 1723 339 236 Covad Communications Co.
6478 1648 310 46 AT&T Services, Inc.
20115 1534 1552 641 Charter Communications
19262 1495 4949 298 Verizon Online LLC
17974 1493 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 2627 2229 tw telecom holdings, inc.
1785 1793 1665 PaeTec Communications, Inc.
6478 1648 1602 AT&T Services, Inc.
18566 1723 1487 Covad Communications Co.
17974 1493 1459 PT Telekomunikasi Indonesia
7545 1470 1390 TPG Internet Pty Ltd
4755 1456 1290 TATA Communications formerly
10620 1444 1284 Types of queries are: POCs, o
4766 1871 1272 Korea Telecom (KIX)
11492 1256 1241 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
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.
26973 UNALLOCATED 12.39.152.0/24 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
31.193.128.0/20 29550 Simply Transit Ltd
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 /12:221
/13:459 /14:787 /15:1386 /16:11640 /17:5739 /18:9569
/19:19274 /20:25613 /21:25553 /22:33566 /23:32320 /24:183882
/25:11 /26:17 /27:23 /28:160 /29:96 /30:52
/31:0 /32:118
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2249 3649 BellSouth.net Inc.
18566 1697 1723 Covad Communications Co.
6478 1602 1648 AT&T Services, Inc.
10620 1334 1444 Types of queries are: POCs, o
4323 1328 2627 tw telecom holdings, inc.
11492 1205 1256 CABLE ONE, INC.
23456 1151 2281 32-bit ASN transition
7011 1062 1161 Frontier Communications of Am
1785 1059 1793 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 2:45 4:14 5:1 6:3 8:351
12:1979 13:1 14:430 15:15 16:3 17:8
20:9 23:5 24:1601 27:722 31:227 32:55
33:3 34:2 37:1 38:762 40:101 41:2450
42:5 44:3 46:881 47:4 49:177 50:373
52:13 55:5 56:2 57:28 58:794 59:471
60:354 61:1092 62:985 63:1916 64:3913 65:2318
66:4345 67:1866 68:1074 69:2957 70:700 71:346
72:1899 73:1 74:2356 75:297 76:336 77:836
78:680 79:461 80:1093 81:816 82:500 83:466
84:649 85:1082 86:563 87:758 88:333 89:1587
90:183 91:3709 92:507 93:1057 94:1265 95:785
96:469 97:251 98:825 99:35 101:58 103:5
106:1 107:5 108:84 109:940 110:547 111:694
112:309 113:395 114:498 115:677 116:935 117:679
118:766 119:1134 120:299 121:647 122:1621 123:1055
124:1222 125:1203 128:214 129:159 130:166 131:564
132:103 133:19 134:206 135:49 136:211 137:138
138:302 139:104 140:470 141:174 142:384 143:399
144:483 145:52 146:437 147:204 148:583 149:242
150:163 151:187 152:307 153:179 154:2 155:395
156:188 157:324 158:132 159:377 160:313 161:238
162:276 163:154 164:480 165:348 166:511 167:426
168:710 169:152 170:782 171:76 172:1 173:1507
174:530 175:349 177:80 178:845 180:809 181:15
182:424 183:202 184:258 185:1 186:1123 187:821
188:987 189:1013 190:4836 192:5737 193:4837 194:3462
195:2975 196:1209 197:16 198:3520 199:3882 200:5521
201:1487 202:8117 203:8320 204:4050 205:2300 206:2652
207:2953 208:3947 209:3458 210:2641 211:1376 212:1983
213:1713 214:723 215:66 216:4841 217:1652 218:551
219:372 220:1192 221:465 222:305 223:130
End of report
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