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 | 4,011,712 | 1.27 x 238 | 3 | 87 | |
| Telenet BVBA | 2,195,968 | 240 | 4 | 134 | |
| Orange Belgium SA | 1,316,096 | 1.02 x 233 | 1 | 73 | |
| 4 | BELNET | 942,336 | 1.5 x 235 | 3 | 81 |
| 5 | Brutele SC | 857,088 | 1.06 x 232 | 1 | 135 |
| 6 | Gateway Communications | 668,928 | 0 | 2 | 229 |
| 7 | Telenet Group NV | 267,264 | 1.25 x 232 | 1 | 10 |
| 8 | EDPNET NV | 97,024 | 1.78 x 231 | 2 | 79 |
| 9 | Combell NV | 94,208 | 1.19 x 236 | 3 | 88 |
| 10 | Hermes Telecom BVBA | 87,296 | 236 | 2 | 14 |
| 11 | Destiny N.V | 84,736 | 234 | 3 | 49 |
| 12 | VERIXI SA | 84,496 | 232 | 2 | 38 |
| 13 | Societe Internationale de Telecommunications Aeronautiques | 73,728 | 1.22 x 222 | 2 | 42 |
| 14 | Lambrechts Data Services VOF | 66,304 | 0 | 1 | 4 |
| 15 | Agfa Gevaert NV | 65,536 | 0 | 1 | 1 |
| 16 | Easyhost BVBA | 40,960 | 232 | 1 | 9 |
| 17 | Cegeka NV | 27,904 | 1.01 x 225 | 2 | 26 |
| 18 | Network Research Belgium | 22,272 | 232 | 1 | 10 |
| 19 | WIN S.A. | 22,016 | 232 | 1 | 6 |
| 20 | ISABEL N.V. | 21,760 | 0 | 1 | 18 |