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 | 6,417,664 | 1.25 x 238 | 3 | 104 | |
| Telenet BV | 2,405,632 | 1.02 x 240 | 1 | 120 | |
| Orange Belgium SA | 1,273,344 | 1.5 x 233 | 3 | 85 | |
| 4 | BELNET | 879,104 | 1.19 x 236 | 2 | 49 |
| 5 | VOO S.A. | 791,552 | 1.06 x 232 | 1 | 119 |
| 6 | Dstny BE N.V. | 172,800 | 1.53 x 237 | 2 | 106 |
| 7 | EDPNET Belgium BV | 96,512 | 232 | 2 | 16 |
| 8 | Combell NV | 90,368 | 1.63 x 235 | 1 | 76 |
| 9 | Hermes Telecom BVBA | 85,504 | 1.19 x 236 | 2 | 20 |
| 10 | VERIXI SA | 84,736 | 233 | 2 | 52 |
| 11 | EUROCONTROL, the European Organisation for the Safety of Air Navigation | 76,544 | 0 | 1 | 41 |
| 12 | Agfa Gevaert NV | 70,144 | 0 | 1 | 5 |
| 13 | European Commission - Directorate General - Joint Research Centre | 69,632 | 0 | 1 | 2 |
| 14 | The North Atlantic Treaty Organization | 67,328 | 0 | 2 | 8 |
| 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 | 31 |
| 18 | KBC GLOBAL SERVICES NV | 32,256 | 218 | 4 | 84 |
| 19 | Societe Internationale de Telecommunications Aeronautiques | 26,368 | 1.01 x 229 | 3 | 54 |
| 20 | Belgacom International Carrier Services SA | 23,552 | 232 | 1 | 25 |