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 | 328,192 | 232 | 1 | 14 | |
| SES ASTRA S.A. | 305,008 | 232 | 2 | 201 | |
| POST Luxembourg | 221,184 | 232 | 1 | 23 | |
| 4 | Proximus Luxembourg S.A. | 163,840 | 1.01 x 235 | 2 | 46 |
| 5 | G-Core Labs S.A. | 133,120 | 1.31 x 226 | 3 | 611 |
| 6 | EUROPEAN PARLIAMENT | 131,072 | 0 | 1 | 3 |
| 7 | Fondation RESTENA | 83,968 | 235 | 2 | 9 |
| 8 | Luxembourg Online S.A. | 32,000 | 232 | 1 | 13 |
| 9 | Visual Online S.A. | 22,272 | 233 | 1 | 13 |
| 10 | Lux Green Technologies Sarl | 22,016 | 1.5 x 233 | 2 | 10 |
| 11 | CEGECOM S.A. | 22,016 | 232 | 1 | 8 |
| 12 | TELKEA TELECOM SA | 17,920 | 232 | 1 | 5 |
| 13 | Datacenter Luxembourg S.A. | 15,616 | 235 | 2 | 26 |
| 14 | Mixvoip S.A. | 15,104 | 236 | 1 | 38 |
| 15 | Innova Co S.A.R.L. | 13,056 | 0 | 2 | 14 |
| 16 | LUXNETWORK S.A. | 11,008 | 233 | 2 | 24 |
| 17 | Broadcasting Center Europe (an RTL Group Company) | 10,240 | 1.01 x 232 | 1 | 25 |
| 18 | Eltrona Interdiffusion S.A. | 10,240 | 235 | 1 | 7 |
| 19 | JWE S.a r.l. | 8,704 | 1.25 x 218 | 2 | 39 |
| 20 | Clearstream Services S.A. | 8,192 | 233 | 2 | 20 |