Top 20 organizations with the largest IP allocations in United Kingdom
Top 20 organizations with the largest IP allocations
| Rank | Name | IPv4 addresses | IPv6 /64 networks | AS numbers | Prefixes |
|---|---|---|---|---|---|
| British Telecommunications PLC | 13,731,072 | 1.02 x 242 | 5 | 645 | |
| Virgin Media Limited | 9,539,072 | 1.01 x 239 | 2 | 357 | |
| Jisc Services Limited | 7,416,320 | 1.06 x 236 | 1 | 204 | |
| 4 | EE Limited | 7,104,512 | 236 | 1 | 68 |
| 5 | Sky UK Limited | 7,088,896 | 235 | 2 | 33 |
| 6 | TalkTalk Communications Limited | 3,896,064 | 1.25 x 235 | 4 | 65 |
| 7 | Tiscali UK Limited | 2,973,696 | 237 | 1 | 45 |
| 8 | COLT Technology Services Group Limited | 1,266,175 | 232 | 1 | 322 |
| 9 | Vodafone Limited | 1,192,448 | 232 | 6 | 87 |
| 10 | ClaraNET LTD | 1,034,240 | 1.2 x 236 | 3 | 177 |
| 11 | Interoute Communications Limited | 875,520 | 1.75 x 236 | 1 | 246 |
| 12 | KCOM Group PLC | 849,922 | 1.13 x 235 | 2 | 67 |
| 13 | Daisy Communications Ltd | 765,952 | 236 | 1 | 121 |
| 14 | RM Education Ltd | 762,880 | 232 | 1 | 33 |
| 15 | Zen Internet Ltd | 603,136 | 235 | 1 | 41 |
| 16 | MDNX Internet Limited | 530,688 | 232 | 1 | 63 |
| 17 | Hutchison 3G UK Limited | 528,640 | 0 | 2 | 45 |
| 18 | iomart Cloud Services Limited. | 398,336 | 236 | 2 | 341 |
| 19 | Rackspace Ltd. | 398,080 | 233 | 2 | 47 |
| 20 | ENTANET International Limited | 354,304 | 1.75 x 235 | 1 | 84 |