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 | 211,456 | 232 | 1 | 78 | |
| MIC TANZANIA LTD | 183,808 | 233 | 2 | 97 | |
| TANZANIA TELECOMMUNICATIONS CO. LTD | 176,384 | 232 | 1 | 223 | |
| 4 | Simbanet (T) Limited | 114,432 | 234 | 2 | 90 |
| 5 | Airtel Tanzania | 65,536 | 232 | 1 | 74 |
| 6 | Tanzania Education And Research Network | 41,728 | 232 | 1 | 38 |
| 7 | Viettel Tanzania PLC | 30,976 | 0 | 1 | 55 |
| 8 | Aptus Solutions Ltd | 19,968 | 1.03 x 232 | 1 | 21 |
| 9 | Habari Node Public Limited | 19,712 | 232 | 1 | 47 |
| 10 | Cats-Net Limited | 14,848 | 0 | 1 | 27 |
| 11 | WIA Tanzania | 12,288 | 232 | 1 | 3 |
| 12 | University of Dar es Salaam | 12,288 | 232 | 1 | 3 |
| 13 | Bell Communications Ltd | 12,288 | 232 | 1 | 31 |
| 14 | e-Government Authority | 11,008 | 1.25 x 232 | 1 | 25 |
| 15 | ECHOTEL TANZANIA LIMITED | 9,472 | 0 | 1 | 5 |
| 16 | Flashnet Technologies Limited | 8,448 | 232 | 1 | 20 |
| 17 | Milan Cable | 8,192 | 0 | 1 | 17 |
| 18 | Simply Computers Tanzania Ltd | 8,192 | 0 | 1 | 19 |
| 19 | Computer Sales & Services | 5,632 | 0 | 1 | 12 |
| 20 | Gadgetronix.Net Ltd | 4,096 | 0 | 1 | 9 |