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 | 13,734,912 | 1.02 x 242 | 5 | 644 | |
| Virgin Media Limited | 9,535,488 | 1.01 x 239 | 2 | 342 | |
| Jisc Services Limited | 7,415,040 | 1.13 x 236 | 1 | 213 | |
| 4 | EE Limited | 7,104,256 | 236 | 1 | 69 |
| 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 | 1,207,295 | 232 | 1 | 341 |
| 9 | Vodafone Limited | 1,127,424 | 232 | 6 | 71 |
| 10 | ClaraNET LTD | 1,033,728 | 1.2 x 236 | 3 | 176 |
| 11 | Interoute Communications Limited | 873,984 | 1.75 x 236 | 1 | 211 |
| 12 | KCOM Group PLC | 849,410 | 1.13 x 235 | 2 | 66 |
| 13 | Daisy Communications Ltd | 764,928 | 236 | 1 | 128 |
| 14 | RM Education Ltd | 762,880 | 232 | 1 | 32 |
| 15 | Zen Internet Ltd | 668,672 | 235 | 1 | 43 |
| 16 | MDNX Internet Limited | 531,456 | 232 | 1 | 64 |
| 17 | Hutchison 3G UK Limited | 528,640 | 216 | 2 | 46 |
| 18 | iomart Cloud Services Limited. | 397,824 | 236 | 2 | 345 |
| 19 | Rackspace Ltd. | 397,568 | 233 | 2 | 45 |
| 20 | M247 Ltd | 377,344 | 1.75 x 236 | 1 | 1,129 |