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 | 6,540,992 | 1.27 x 238 | 5 | 135 | |
| Telenet BVBA | 2,265,600 | 1.02 x 240 | 3 | 111 | |
| Orange Belgium SA | 1,363,200 | 1.51 x 233 | 1 | 65 | |
| 4 | Societe Internationale de Telecommunications Aeronautiques | 1,339,392 | 1.01 x 229 | 4 | 78 |
| 5 | BELNET | 877,312 | 1.19 x 236 | 1 | 45 |
| 6 | Brutele SC | 791,552 | 1.06 x 232 | 1 | 119 |
| 7 | Destiny N.V | 124,928 | 1.22 x 237 | 4 | 69 |
| 8 | Hermes Telecom BVBA | 102,400 | 1.38 x 235 | 2 | 18 |
| 9 | EDPNET NV | 95,488 | 1.72 x 231 | 2 | 59 |
| 10 | Combell NV | 84,480 | 1.88 x 235 | 1 | 73 |
| 11 | VERIXI SA | 83,456 | 233 | 2 | 48 |
| 12 | EUROCONTROL, the European Organisation for the Safety of Air Navigation | 72,448 | 0 | 1 | 25 |
| 13 | European Commission - Directorate General - Joint Research Centre | 69,632 | 0 | 1 | 2 |
| 14 | Lambrechts Data Services VOF | 66,048 | 0 | 1 | 3 |
| 15 | Agfa Gevaert NV | 65,536 | 0 | 1 | 1 |
| 16 | Council of the EU, General Secretariat | 53,504 | 0 | 1 | 21 |
| 17 | Cegeka NV | 44,288 | 1.01 x 225 | 2 | 29 |
| 18 | Easyhost BVBA | 39,168 | 232 | 1 | 5 |
| 19 | FOSDEM VZW | 33,792 | 216 | 1 | 3 |
| 20 | Network Research Belgium S.A. | 29,184 | 232 | 1 | 25 |