List of the top 20 organizations with the largest IP allocations in European Union
| Rank | Name | IPv4 addresses | IPv6 /64 networks | AS numbers | Prefixes |
|---|---|---|---|---|---|
| Akamai International B.V. | 10,294,224 | 240 | 8 | 3,945 | |
| WIND TRE S.P.A. | 8,354,560 | 1.02 x 241 | 1 | 142 | |
| KPN B.V. | 6,937,856 | 1.06 x 239 | 1 | 342 | |
| 4 | TELE2 | 5,079,040 | 1.08 x 239 | 1 | 240 |
| 5 | Elisa Oyj | 3,721,728 | 1.28 x 237 | 2 | 304 |
| 6 | Telia Finland Oyj | 3,641,856 | 1.5 x 235 | 1 | 202 |
| 7 | Renater | 2,859,777 | 1.5 x 230 | 43 | 182 |
| 8 | Consortium GARR | 2,770,944 | 233 | 1 | 83 |
| 9 | Universitaet Stuttgart | 2,714,880 | 1.56 x 236 | 1 | 101 |
| 10 | SWITCH | 2,253,568 | 1.34 x 237 | 1 | 125 |
| 11 | Easynet Global Services | 1,915,400 | 234 | 1 | 110 |
| 12 | Vodafone Group PLC | 1,467,136 | 243 | 1 | 261 |
| 13 | SONATEL-AS Autonomous System | 1,331,712 | 232 | 1 | 414 |
| 14 | Forthnet | 1,259,264 | 1.71 x 235 | 1 | 81 |
| 15 | Cable & Wireless Worldwide | 1,077,504 | 240 | 1 | 29 |
| 16 | KEMS Block-A, Floor 7, Souq Al-Kabeer Kuwait City, State of Kuwait P O Box 3623 | 804,096 | 1.5 x 21 | 1 | 198 |
| 17 | SUNET Swedish University Network | 619,136 | 232 | 1 | 55 |
| 18 | Telia Company AB | 462,848 | 244 | 2 | 144 |
| 19 | BT Communications Ireland Limited | 438,016 | 1.13 x 235 | 1 | 16 |
| 20 | Shell Information Technology International B.V. | 361,728 | 0 | 2 | 35 |