At Hostinger servers, all outgoing ports are open, except 0 and 25. You can find a full list of open ports on the following table:
For Web and Cloud hosting, the list corresponds exactly to the open ports. For security reasons, these settings are fixed and additional ports cannot be opened. Similarly, it is not possible to close any currently open ports.
If you want full control over your hosting ports, VPS hosting is the best solution for you.