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 | 1,309,952 | 0 | 1 | 55 | |
| European Commission | 327,680 | 232 | 1 | 10 | |
| SES ASTRA S.A. | 274,432 | 233 | 1 | 128 | |
| 4 | POST Luxembourg | 188,672 | 232 | 1 | 24 |
| 5 | Proximus Luxembourg S.A. | 87,808 | 1.01 x 235 | 2 | 44 |
| 6 | Fondation RESTENA | 83,712 | 235 | 2 | 8 |
| 7 | ASSOCIATED DEXIA TECHNOLOGY SERVICES, S.A. | 79,872 | 0 | 1 | 5 |
| 8 | root SA | 32,512 | 232 | 1 | 13 |
| 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. | 22,272 | 232 | 1 | 10 |
| 12 | Visual Online S.A. | 22,016 | 233 | 1 | 12 |
| 13 | Datacenter Luxembourg S.A. | 19,200 | 232 | 2 | 18 |
| 14 | TELKEA TELECOM SA | 18,176 | 232 | 1 | 6 |
| 15 | Mixvoip S.A. | 13,056 | 235 | 2 | 22 |
| 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. | 9,728 | 235 | 1 | 9 |
| 19 | LUXNETWORK S.A. | 9,472 | 233 | 2 | 18 |
| 20 | Broadcasting Center Europe (an RTL Group Company) | 8,448 | 232 | 1 | 16 |