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 | 13,736,960 | 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 |
