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 | 13,668,352 | 1.02 x 242 | 5 | 628 | |
| Virgin Media Limited | 9,533,952 | 1.01 x 239 | 2 | 356 | |
| Jisc Services Limited | 7,415,040 | 1.13 x 236 | 1 | 213 | |
| 4 | EE Limited | 7,104,256 | 236 | 1 | 70 |
| 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 | 1,247,487 | 1.5 x 233 | 1 | 338 |
| 9 | Vodafone Limited | 1,127,424 | 232 | 6 | 66 |
| 10 | ClaraNET LTD | 1,038,848 | 1.2 x 236 | 3 | 166 |
| 11 | KCOM Group PLC | 849,666 | 1.13 x 235 | 2 | 67 |
| 12 | Interoute Communications Limited | 817,720 | 1.75 x 236 | 1 | 360 |
| 13 | RM Education Ltd | 762,880 | 232 | 1 | 32 |
| 14 | Daisy Communications Ltd | 741,376 | 236 | 1 | 111 |
| 15 | Zen Internet Ltd | 668,672 | 235 | 1 | 43 |
| 16 | M247 Ltd | 576,000 | 1.16 x 237 | 1 | 1,488 |
| 17 | MDNX Internet Limited | 531,712 | 232 | 1 | 57 |
| 18 | Hutchison 3G UK Limited | 528,896 | 1.25 x 232 | 2 | 73 |
| 19 | iomart Cloud Services Limited. | 399,104 | 1.01 x 235 | 2 | 354 |
| 20 | Rackspace Ltd. | 397,520 | 233 | 2 | 58 |
