Internet Service Providers in United Kingdom

Top 20 organizations with the largest IP allocations in United Kingdom

United Kingdom

Top 20 organizations with the largest IP allocations


Rank Name IPv4 addresses IPv6 /64 networks AS numbers Prefixes
British Telecommunications PLC 13,736,960 1.02 x 242 5 635
Virgin Media Limited 9,534,464 1.01 x 239 2 355
Jisc Services Limited 7,415,296 1.13 x 236 1 214
4 EE Limited 7,104,256 236 1 69
5 Sky UK Limited 7,088,896 235 2 33
6 TalkTalk Communications Limited 5,010,176 1.25 x 235 4 84
7 Tiscali UK Limited 3,039,232 237 1 46
8 COLT Technology Services Group Limited 1,207,295 233 1 335
9 Vodafone Limited 1,126,912 232 6 69
10 ClaraNET LTD 1,039,872 1.2 x 236 3 169
11 Interoute Communications Limited 877,056 1.75 x 236 1 215
12 KCOM Group PLC 849,410 1.13 x 235 2 66
13 RM Education Ltd 762,880 232 1 32
14 Daisy Communications Ltd 749,824 236 1 114
15 Zen Internet Ltd 668,672 235 1 43
16 MDNX Internet Limited 531,712 232 1 57
17 Hutchison 3G UK Limited 528,896 230 2 51
18 M247 Ltd 451,840 1.13 x 237 1 1,274
19 iomart Cloud Services Limited. 397,824 1.01 x 235 2 352
20 Rackspace Ltd. 397,312 233 2 44