Ignore my last reply, this is a bug. I've filed it as DE14004.
For the record - the current missing regulatory domains as of 7.6.3 are:
-> Bosnia and Herzegovina (BA)
-> Ghana (GH)
-> Kazakhstan (KZ)
-> Maritime Forward Operating Base (MB)
-> Maritime Offshore (MI)
-> Macedonia (MK)
-> Mali (ML)
-> Nigeria (NG)