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. | 286,240 | 232 | 1 | 139 | |
| POST Luxembourg | 219,904 | 232 | 1 | 20 | |
| 4 | G-Core Labs S.A. | 134,914 | 1.22 x 226 | 3 | 595 |
| 5 | EUROPEAN PARLIAMENT | 131,584 | 0 | 1 | 5 |
| 6 | Fondation RESTENA | 83,968 | 235 | 2 | 9 |
| 7 | Proximus Luxembourg S.A. | 82,944 | 1.01 x 235 | 2 | 40 |
| 8 | root SA | 35,840 | 232 | 1 | 31 |
| 9 | Luxembourg Online S.A. | 32,000 | 232 | 1 | 13 |
| 10 | CEGECOM S.A. | 23,040 | 232 | 1 | 12 |
| 11 | Lux Green Technologies Sarl | 22,016 | 1.5 x 233 | 2 | 10 |
| 12 | Visual Online S.A. | 21,248 | 233 | 1 | 12 |
| 13 | TELKEA TELECOM SA | 18,176 | 232 | 1 | 6 |
| 14 | Mixvoip S.A. | 16,384 | 235 | 2 | 35 |
| 15 | Datacenter Luxembourg S.A. | 14,592 | 235 | 2 | 22 |
| 16 | Innova Co S.A.R.L. | 12,800 | 0 | 3 | 14 |
| 17 | Eltrona Interdiffusion S.A. | 11,264 | 235 | 1 | 8 |
| 18 | Orange Communications Luxembourg S.A | 10,240 | 0 | 1 | 2 |
| 19 | LUXNETWORK S.A. | 9,984 | 233 | 2 | 20 |
| 20 | Broadcasting Center Europe (an RTL Group Company) | 8,192 | 232 | 1 | 19 |