Internet service providers

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

For a list of French-speaking countries ISP, check the french version of this page.

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.

USA

Service provider Box (modem/router) uPnP available Port 25 openable Hairpinning Customizable reverse DNS Fix IP
Cox Multiple Yes No. Only for business class customer. No No Yes, as a business class customer
Charter Multiple Yes No. Only for business class customer. No No Yes, as a business class customer
DSLExtreme Multiple Yes Yes No No Yes, extra charge.
AT&T Multiple Yes No. Only for business class customer. unknown. unknown. unknown.
Xfinity (Comcast) Multiple Yes No. Only for business class customer. unknown. unknown. Yes, as a business class customer

UK

Service provider Box (modem/router) uPnP available Port 25 openable Hairpinning Customizable reverse DNS Fix IP
BT Internet Yes - Yes - - No
Virgin Media Yes - - - No No
ZEN Internet Yes - Yes - Yes -
PlusNet Yes Yes Yes No Yes, if you raise a ticket Small one off Charge

Brazil

Service provider Box (modem/router) uPnP available Port 25 openable Hairpinning Customizable reverse DNS Fix IP
Global Village Telecom Multiple Yes No. Only for Fix IP No No Yes, extra charge.

Ireland

Service provider Box (modem/router) uPnP available Port 25 openable Hairpinning Customizable reverse DNS Fix IP
Whizzy Internet Multiple Yes Yes Yes Yes Yes

Canada

Service provider Box (modem/router) uPnP available Port 25 openable Hairpinning Customizable reverse DNS Fix IP
Telus Multiple - No. Extra charge - - No. Extra charge
TekSavvy Multiple - Yes No - No. Extra charge

Sweden

Service provider Box (modem/router) uPnP available Port 25 openable 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 Multiple Yes Yes N/A? ? Yes

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.

Switzerland

Most of non business IP provided by ISP are blacklisted.

Service provider Box (modem/router) uPnP available Port 25 openable Hairpinning Customizable reverse DNS Fix IP
Sunrise Multiple No Yes No - -
Swisscom Multiple No Yes No No No
VTX Multiple No Yes No - -

South Korea

Service provider Box (modem/router) uPnP available Port 25 openable Hairpinning Customizable reverse DNS Fix IP
LG U+ (HelloVision) Multiple Yes Yes (Without ISP Router) No - Partial
KT(SkyLife, Qook&Show) Multiple Yes Yes No - Partial
SKT (SK Broadband) Multiple Yes Yes No - Partial

Hungary

Service provider Box (modem/router) uPnP available Port 25 openable Hairpinning Customizable reverse DNS Fix IP
DIGI Távközlési és Szolgáltató Kft. Yes No No. Business only. No No No. Business only

Finland

Service provider Box (modem/router) uPnP available Port 25 openable Hairpinning Customizable reverse DNS Fix IP
DNA Multiple Yes No [^fi-port25] Yes No No. Only for business.
Elisa Multiple Yes No [^fi-port25] Yes Not available for consumers No. Only for Business.
Telia Multiple Yes No [^fi-port25] Yes Not available for consumers No. Only for Business.

[^fi-port25]: Regulations in Finland prohibit the use of Port 25 for consumers.

If you want to add international ISPs information, please do consider modifying this page.

Found errors? Think you can improve this documentation? Simply click the Edit link at the top of the page, and then the icon on Github to suggest changes.