List of the top 20 organizations with the largest IP allocations in Luxembourg
| Rank | Name | IPv4 addresses | IPv6 /64 networks | AS numbers | Prefixes |
|---|---|---|---|---|---|
| European Commission | 328,704 | 232 | 1 | 16 | |
| SES ASTRA S.A. | 222,464 | 1.06 x 233 | 3 | 206 | |
| POST Luxembourg | 220,160 | 232 | 1 | 19 | |
| 4 | G-Core Labs S.A. | 195,072 | 1.76 x 226 | 3 | 864 |
| 5 | Proximus Luxembourg S.A. | 162,816 | 1.01 x 235 | 2 | 56 |
| 6 | EUROPEAN PARLIAMENT | 136,704 | 0 | 1 | 18 |
| 7 | Fondation RESTENA | 83,968 | 235 | 2 | 11 |
| 8 | Luxembourg Online S.A. | 32,000 | 232 | 1 | 13 |
| 9 | Mixvoip S.A. | 29,440 | 1.03 x 237 | 1 | 59 |
| 10 | CEGECOM S.A. | 22,016 | 232 | 1 | 9 |
| 11 | Visual Online S.A. | 20,736 | 1.25 x 235 | 1 | 11 |
| 12 | TELKEA TELECOM SA | 17,920 | 232 | 1 | 5 |
| 13 | Datacenter Luxembourg S.A. | 17,920 | 235 | 2 | 28 |
| 14 | Broadcasting Center Europe (an RTL Group Company) | 15,360 | 1.02 x 232 | 1 | 39 |
| 15 | Innova Co S.A.R.L. | 13,056 | 0 | 4 | 14 |
| 16 | Lux Green Technologies Sarl | 12,800 | 0 | 1 | 4 |
| 17 | LUXNETWORK S.A. | 12,800 | 233 | 1 | 24 |
| 18 | Eltrona Interdiffusion S.A. | 11,264 | 235 | 1 | 8 |
| 19 | JWE S.a r.l. | 8,704 | 1.5 x 218 | 1 | 40 |
| 20 | Clearstream Services S.A. | 7,424 | 1.75 x 232 | 1 | 17 |