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. | 317,440 | 232 | 3 | 220 | |
| POST Luxembourg | 220,160 | 232 | 1 | 19 | |
| 4 | G-Core Labs S.A. | 177,152 | 1.7 x 226 | 2 | 808 |
| 5 | Proximus Luxembourg S.A. | 162,048 | 1.01 x 235 | 2 | 62 |
| 6 | EUROPEAN PARLIAMENT | 131,584 | 0 | 1 | 4 |
| 7 | Fondation RESTENA | 83,968 | 235 | 2 | 9 |
| 8 | Luxembourg Online S.A. | 32,000 | 232 | 1 | 13 |
| 9 | Mixvoip S.A. | 22,528 | 236 | 1 | 49 |
| 10 | CEGECOM S.A. | 21,760 | 232 | 1 | 8 |
| 11 | Visual Online S.A. | 21,248 | 1.25 x 235 | 1 | 13 |
| 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 | Lux Green Technologies Sarl | 13,824 | 0 | 1 | 5 |
| 16 | LUXNETWORK S.A. | 12,800 | 233 | 1 | 24 |
| 17 | Innova Co S.A.R.L. | 12,288 | 0 | 4 | 12 |
| 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. | 8,192 | 1.75 x 232 | 2 | 19 |