List of the top 20 organizations with the largest IP allocations in Tanzania
| Rank | Name | IPv4 addresses | IPv6 /64 networks | AS numbers | Prefixes |
|---|---|---|---|---|---|
| Vodacom Tanzania Ltd | 209,408 | 232 | 1 | 77 | |
| TANZANIA TELECOMMUNICATIONS CO. LTD | 190,208 | 232 | 1 | 277 | |
| MIC TANZANIA LTD | 184,320 | 233 | 2 | 99 | |
| 4 | Simbanet (T) Limited | 112,128 | 234 | 2 | 89 |
| 5 | Airtel Tanzania | 70,400 | 232 | 1 | 92 |
| 6 | Tanzania Education And Research Network | 42,496 | 232 | 1 | 41 |
| 7 | Viettel Tanzania PLC | 32,000 | 0 | 1 | 59 |
| 8 | Aptus Solutions Ltd | 19,712 | 1.02 x 232 | 1 | 19 |
| 9 | Habari Node Public Limited | 19,712 | 232 | 1 | 47 |
| 10 | Cats-Net Limited | 14,848 | 232 | 1 | 28 |
| 11 | Bell Communications Ltd | 12,288 | 232 | 1 | 31 |
| 12 | University of Dar es Salaam | 12,288 | 232 | 1 | 3 |
| 13 | WIA Tanzania | 12,288 | 232 | 1 | 3 |
| 14 | e-Government Authority | 11,264 | 1.25 x 232 | 1 | 26 |
| 15 | ECHOTEL TANZANIA LIMITED | 9,984 | 0 | 1 | 7 |
| 16 | Simply Computers Tanzania Ltd | 8,192 | 0 | 1 | 19 |
| 17 | Milan Cable | 7,936 | 0 | 1 | 16 |
| 18 | Flashnet Technologies Limited | 7,424 | 232 | 1 | 18 |
| 19 | Computer Sales & Services | 5,632 | 0 | 1 | 12 |
| 20 | Gadgetronix.Net Ltd | 3,840 | 0 | 1 | 8 |