# Internet service providers

Here is a non-comprehensive list of internet service providers by countries, wich contains criteria of tolerance to self-hosting.

A "no" may cause problems of the using of your server or may require you to make additional configurations. Status in brackets indicates the default behavior.

A list of French and Belgian ISPs is available on the [french page](/isp_fr).

### Country

| Service provider | Box (modem/router) | uPnP available | Port 25 openable | [Hairpinning](http://en.wikipedia.org/wiki/Hairpinning) | Customizable reverse DNS | Fix IP |
| --- | --- | --- | --- | --- | --- | --- |
|  |  |  |  |  |  |  |

If you want to add international ISPs information, please do consider [modifying this page](/write_documentation).