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 | 13,695,744 | 1.02 x 242 | 5 | 619 | |
| Virgin Media Limited | 9,527,552 | 1.01 x 239 | 2 | 348 | |
| Jisc Services Limited | 7,415,296 | 1.63 x 236 | 1 | 215 | |
| 4 | Sky UK Limited | 7,088,896 | 235 | 2 | 33 |
| 5 | EE Limited | 6,973,184 | 236 | 1 | 74 |
| 6 | TalkTalk Communications Limited | 3,896,320 | 1.25 x 235 | 3 | 72 |
| 7 | Tiscali UK Limited | 3,039,232 | 237 | 1 | 46 |
| 8 | Vodafone Limited | 1,914,368 | 232 | 6 | 70 |
| 9 | COLT Technology Services Group Limited | 1,216,255 | 234 | 1 | 332 |
| 10 | ClaraNET LTD | 1,106,432 | 1.38 x 236 | 3 | 177 |
| 11 | KCOM Group PLC | 849,666 | 1.13 x 235 | 2 | 67 |
| 12 | Interoute Communications Limited | 807,168 | 1.06 x 236 | 1 | 437 |
| 13 | Daisy Communications Ltd | 740,608 | 236 | 1 | 127 |
| 14 | RM Education Ltd | 697,344 | 232 | 1 | 31 |
| 15 | Zen Internet Ltd | 668,672 | 235 | 1 | 43 |
| 16 | M247 Ltd | 634,112 | 1.41 x 237 | 1 | 1,703 |
| 17 | MDNX Internet Limited | 534,016 | 232 | 1 | 59 |
| 18 | Hutchison 3G UK Limited | 529,152 | 1.25 x 232 | 2 | 81 |
| 19 | Digital Energy Technologies Limited | 501,504 | 1.46 x 238 | 1 | 1,452 |
| 20 | Rackspace Ltd. | 399,392 | 233 | 2 | 75 |
