A "no" may cause problems for using your server or may require you to make additional configuration changes. Status in brackets indicates the default behavior.
| Service provider | Box (modem/router) | uPnP available | Port 25 openable | [Hairpinning](http://en.wikipedia.org/wiki/Hairpinning) | Customizable reverse DNS | Fix IP |
| Service provider | Box (modem/router) | uPnP available | Port 25 openable | [Hairpinning](http://en.wikipedia.org/wiki/Hairpinning) | Customizable reverse DNS | Fix IP |
| Service provider | Box (modem/router) | uPnP available | Port 25 openable | [Hairpinning](http://en.wikipedia.org/wiki/Hairpinning) | Customizable reverse DNS | Fix IP |
| Service provider | Box (modem/router) | uPnP available | Port 25 openable | [Hairpinning](http://en.wikipedia.org/wiki/Hairpinning) | Customizable reverse DNS | Fix IP |
| Service provider | Box (modem/router) | uPnP available | Port 25 openable | [Hairpinning](http://en.wikipedia.org/wiki/Hairpinning) | Customizable reverse DNS | Fix IP |
| --- | --- | --- | --- | --- | --- | --- |
| Telus | Multiple | - | No. Extra charge | - | - | No. Extra charge |
| Service provider | Box (modem/router) | uPnP available | Port 25 openable | [Hairpinning](http://en.wikipedia.org/wiki/Hairpinning) | Customizable reverse DNS | Fix IP |
| --- | --- | --- | --- | --- | --- | --- |
| Telia | Multiple | Yes | No. Business only. | Yes | No. Business only. | No. Business only. |
| Bredbandsbolaget | Multiple | Yes | No. Business only. | Yes | No. Business only. | No. Business only. |
Ownit reserves port 3 and 4 of their router to TV. With a simple call to their hotline, explaining that you want to selfhost, they can reassign one of the ports to be in bridge mode. It means that your server will have its own public fixed IP address, in addition to the modem's.
Most of non business IP provided by ISP are blacklisted.
| Service provider | Box (modem/router) | uPnP available | Port 25 openable | [Hairpinning](http://en.wikipedia.org/wiki/Hairpinning) | Customizable reverse DNS | Fix IP |
| Service provider | Box (modem/router) | uPnP available | Port 25 openable | [Hairpinning](http://en.wikipedia.org/wiki/Hairpinning) | Customizable reverse DNS | Fix IP |
| --- | --- | --- | --- | --- | --- | --- |
| LG U+ (HelloVision) | Multiple | Yes | Yes (Without ISP Router) | No | - | Partial |