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 | 4,010,944 | 1.27 x 238 | 3 | 86 | |
| Telenet BVBA | 2,519,040 | 240 | 4 | 120 | |
| Orange Belgium SA | 1,320,704 | 1.02 x 233 | 1 | 76 | |
| 4 | BELNET | 942,080 | 1.63 x 235 | 3 | 60 |
| 5 | Brutele SC | 791,552 | 1.06 x 232 | 1 | 119 |
| 6 | Gateway Communications | 669,184 | 0 | 2 | 230 |
| 7 | Telenet Group NV | 267,264 | 1.25 x 232 | 1 | 10 |
| 8 | Destiny N.V | 101,888 | 1.31 x 236 | 4 | 52 |
| 9 | EDPNET NV | 96,512 | 1.78 x 231 | 2 | 77 |
| 10 | Hermes Telecom BVBA | 87,296 | 1.06 x 236 | 2 | 15 |
| 11 | VERIXI SA | 85,760 | 233 | 2 | 47 |
| 12 | Combell NV | 80,640 | 1.06 x 236 | 3 | 82 |
| 13 | Innovative Solutions for Finance (IS4F) | 80,128 | 0 | 1 | 6 |
| 14 | Lambrechts Data Services VOF | 66,304 | 0 | 1 | 4 |
| 15 | Agfa Gevaert NV | 65,536 | 0 | 1 | 1 |
| 16 | Council of the EU, General Secretariat | 52,736 | 0 | 1 | 18 |
| 17 | Easyhost BVBA | 40,704 | 232 | 1 | 8 |
| 18 | Cegeka NV | 27,904 | 1.01 x 225 | 2 | 26 |
| 19 | Network Research Belgium | 27,648 | 232 | 1 | 17 |
| 20 | Societe Internationale de Telecommunications Aeronautiques | 27,136 | 1.02 x 229 | 3 | 51 |