Need a solution to put in special ads for readers from a specific country, in this case Norway.
In this version of the solution, all outside Norway will get general ads.
My website is built this way (it is unusual, quite old, but also smooth):
.htm files include standard layout for page by Server Side Includes (yes, htm not shtml or anything) using now <!--#include virtual=""> but <exec> is also possible but not wanted.
Add "Norway" to your bid, so I can avoid automatic bids.