List of the top 20 organizations with the largest IP allocations in Cuba
| Rank | Name | IPv4 addresses | IPv6 /64 networks | AS numbers | Prefixes |
|---|---|---|---|---|---|
| Empresa de Telecomunicaciones de Cuba, S.A. | 263,168 | 232 | 2 | 63 | |
| Red CENIAInternet | 65,536 | 232 | 1 | 2 | |
| EMPRESA DE TELECOMUNICACIONES DE CUBA S.A. (IXP CUBA) | 256 | 232 | 1 | 2 | |
| 4 | Ministerio de Educacion Superior | 0 | 0 | 1 | 0 |
| 5 | Infomed | 0 | 0 | 1 | 0 |
| 6 | Center for Genetic Engineering andBiotechnology | 0 | 0 | 1 | 0 |