Hi Ralf,
As I understand it, you want www.mycompany.se point to the public website www.mycompany.nu.If it is the case, I suggest you add an A record to point www.mycompany.se to the IP address of the SharePoint Online server.
Thanks,
Aaron Yuan
Hi Ralf,
As I understand it, you want www.mycompany.se point to the public website www.mycompany.nu.