It does, they even have a selection that is translated to english [1]. However I don't know what kind of terms I would search for. I tried "DNS", but it didn't give me anything. I also tried "internet blocking", no luck there either.
The mandate to block torrent sites came about as a result of a court order following a lawsuit brought forth by Hollywood studios against Norwegian ISPs [2]. I tried to find the specific text on lovdata, but came up empty as they don't have a comprehensive list of local court decisions. [3]
[1] https://en.wikipedia.org/wiki/Internet_in_Norway#Internet_ce...
[2] https://www.dagbladet.no/kultur/the-pirate-bay-stenges-i-nor...
[1]: https://lovdata.no/pro/#document/TRSIV/avgjorelse/toslo-2015...