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 | 1,318,144 | 0 | 1 | 56 | |
| European Commission | 327,680 | 232 | 1 | 10 | |
| SES ASTRA S.A. | 274,176 | 233 | 1 | 131 | |
| 4 | POST Luxembourg | 188,160 | 232 | 1 | 23 |
| 5 | Proximus Luxembourg S.A. | 99,437 | 236 | 2 | 460 |
| 6 | Fondation RESTENA | 83,968 | 235 | 2 | 9 |
| 7 | ASSOCIATED DEXIA TECHNOLOGY SERVICES, S.A. | 80,128 | 0 | 1 | 6 |
| 8 | root SA | 37,120 | 232 | 1 | 36 |
| 9 | Luxembourg Online S.A. | 32,000 | 232 | 1 | 13 |
| 10 | Lux Green Technologies Sarl | 24,064 | 1.5 x 233 | 2 | 17 |
| 11 | CEGECOM S.A. | 22,784 | 232 | 1 | 11 |
| 12 | Visual Online S.A. | 22,016 | 233 | 1 | 12 |
| 13 | TELKEA TELECOM SA | 18,176 | 232 | 1 | 6 |
| 14 | Datacenter Luxembourg S.A. | 15,616 | 232 | 2 | 12 |
| 15 | Innova Co S.A.R.L. | 13,056 | 0 | 3 | 15 |
| 16 | Mixvoip S.A. | 12,544 | 235 | 2 | 23 |
| 17 | Zexis S.ar.l | 12,288 | 0 | 1 | 5 |
| 18 | Eltrona Interdiffusion S.A. | 9,728 | 235 | 1 | 7 |
| 19 | LUXNETWORK S.A. | 9,472 | 233 | 2 | 18 |
| 20 | Star Satellite Communications Company - PJSC | 9,216 | 1.5 x 233 | 1 | 28 |