List of the top 20 organizations with the largest IP allocations in Belgium
| Rank | Name | IPv4 addresses | IPv6 /64 networks | AS numbers | Prefixes |
|---|---|---|---|---|---|
| Proximus NV | 6,417,920 | 1.25 x 238 | 4 | 105 | |
| Telenet BV | 2,294,528 | 1.02 x 240 | 1 | 109 | |
| Orange Belgium SA | 1,247,744 | 1.5 x 233 | 3 | 61 | |
| 4 | BELNET | 878,848 | 1.19 x 236 | 2 | 48 |
| 5 | VOO S.A. | 791,552 | 1.06 x 232 | 1 | 119 |
| 6 | Destiny N.V | 176,128 | 1.53 x 237 | 5 | 119 |
| 7 | EDPNET Belgium BV | 96,512 | 232 | 2 | 16 |
| 8 | Hermes Telecom BVBA | 86,528 | 1.19 x 236 | 2 | 21 |
| 9 | Combell NV | 84,736 | 1.63 x 235 | 1 | 72 |
| 10 | VERIXI SA | 84,224 | 233 | 1 | 50 |
| 11 | EUROCONTROL, the European Organisation for the Safety of Air Navigation | 73,728 | 0 | 1 | 30 |
| 12 | European Commission - Directorate General - Joint Research Centre | 69,632 | 0 | 1 | 2 |
| 13 | The North Atlantic Treaty Organization | 67,072 | 0 | 2 | 7 |
| 14 | Agfa Gevaert NV | 65,536 | 0 | 1 | 1 |
| 15 | Council of the EU, General Secretariat | 53,760 | 0 | 1 | 5 |
| 16 | Easyhost BVBA | 39,168 | 232 | 1 | 5 |
| 17 | Cegeka NV | 36,096 | 1.01 x 225 | 2 | 29 |
| 18 | Citymesh Integrator NV | 34,560 | 235 | 2 | 18 |
| 19 | KBC GLOBAL SERVICES NV | 28,928 | 218 | 4 | 71 |
| 20 | Societe Internationale de Telecommunications Aeronautiques | 25,600 | 1.01 x 229 | 2 | 52 |