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 | 4,011,200 | 1.27 x 238 | 3 | 86 | |
| Telenet BVBA | 2,196,736 | 240 | 4 | 139 | |
| Orange Belgium SA | 1,316,608 | 1.02 x 233 | 1 | 75 | |
| 4 | BELNET | 942,080 | 1.63 x 235 | 3 | 81 |
| 5 | Brutele SC | 857,088 | 1.06 x 232 | 1 | 135 |
| 6 | Gateway Communications | 669,184 | 0 | 2 | 230 |
| 7 | Telenet Group NV | 267,264 | 1.25 x 232 | 1 | 10 |
| 8 | Destiny N.V | 104,448 | 1.31 x 236 | 4 | 60 |
| 9 | EDPNET NV | 96,768 | 1.78 x 231 | 2 | 78 |
| 10 | Combell NV | 93,696 | 1.19 x 236 | 3 | 86 |
| 11 | Hermes Telecom BVBA | 87,296 | 1.06 x 236 | 2 | 15 |
| 12 | VERIXI SA | 84,224 | 232 | 2 | 41 |
| 13 | Innovative Solutions for Finance (IS4F) | 80,128 | 0 | 1 | 6 |
| 14 | Lambrechts Data Services VOF | 66,048 | 0 | 1 | 3 |
| 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 | 26,624 | 232 | 1 | 14 |
| 19 | WIN S.A. | 22,272 | 232 | 1 | 7 |
| 20 | ISABEL N.V. | 21,760 | 0 | 1 | 18 |