List of the top 20 organizations with the largest IP allocations in Luxembourg
| Rank | Name | IPv4 addresses | IPv6 /64 networks | AS numbers | Prefixes |
|---|---|---|---|---|---|
| Orange Communications Luxembourg S.A | 1,318,656 | 0 | 1 | 58 | |
| European Commission | 328,192 | 232 | 1 | 12 | |
| SES ASTRA S.A. | 279,072 | 232 | 1 | 137 | |
| 4 | POST Luxembourg | 187,392 | 232 | 1 | 20 |
| 5 | EUROPEAN PARLIAMENT | 131,072 | 0 | 1 | 3 |
| 6 | G-Core Labs S.A. | 111,894 | 1.25 x 228 | 2 | 508 |
| 7 | Fondation RESTENA | 83,968 | 235 | 2 | 9 |
| 8 | Proximus Luxembourg S.A. | 80,128 | 1.01 x 235 | 2 | 37 |
| 9 | root SA | 37,120 | 232 | 1 | 36 |
| 10 | Luxembourg Online S.A. | 32,000 | 232 | 1 | 13 |
| 11 | CEGECOM S.A. | 23,040 | 232 | 1 | 12 |
| 12 | Visual Online S.A. | 22,016 | 233 | 1 | 12 |
| 13 | TELKEA TELECOM SA | 18,176 | 232 | 1 | 6 |
| 14 | Datacenter Luxembourg S.A. | 16,640 | 232 | 2 | 16 |
| 15 | Mixvoip S.A. | 13,568 | 235 | 2 | 28 |
| 16 | Innova Co S.A.R.L. | 12,800 | 0 | 3 | 14 |
| 17 | Zexis S.ar.l | 12,288 | 0 | 1 | 5 |
| 18 | Eltrona Interdiffusion S.A. | 10,752 | 235 | 1 | 9 |
| 19 | LUXNETWORK S.A. | 9,728 | 233 | 2 | 19 |
| 20 | Clearstream Services S.A. | 8,192 | 233 | 2 | 20 |