| Rank | Name | IPv4 addresses | IPv6 /64 networks | AS numbers | Prefixes |
|---|---|---|---|---|---|
| Telecom Namibia | 321,792 | 232 | 3 | 44 | |
| MTC - Mobile Telecommunications, Ltd. | 188,672 | 232 | 1 | 14 | |
| Government of the Republic of Namibia | 28,672 | 0 | 1 | 3 | |
| 4 | Namibia University of Science and Technology | 3,328 | 0 | 1 | 8 |
| 5 | Salt Essential Information Technology | 2,048 | 0 | 1 | 3 |
| 6 | Loc Eight Mobile (Pty) Ltd | 1,024 | 0 | 1 | 1 |
| 7 | Radio Electronic (Proprietary) Limited | 1,024 | 0 | 1 | 1 |
| 8 | Rocketnet Internet Namibia | 1,024 | 232 | 1 | 2 |
| 9 | Click Cloud Hosting Services CC | 1,024 | 0 | 1 | 1 |
| 10 | Bank Windhoek | 256 | 0 | 1 | 1 |
| 11 | Trustco Group Holdings | 256 | 0 | 1 | 1 |
| 12 | NamPower | 256 | 216 | 1 | 2 |