Did some more tests and seems to be Telia doing the blocking at the ISP level. When I'm connected to the eduroam wifi network (I'm at a university) then I can get to all those sites. When I turn off wifi and use mobile data, via Telia, then they are blocked. If I use mobile data plus a VPN with the location set to Sweden, I can access the sites again. I have Tele2 as my ISP at home, will be interesting to see if that works or not.