North Dakota uses both front & rear license plates
This is the North Dakota Current Standard license plate design:

It follows a 123 ABC format
This is the North Dakota Apportioned Truck license plate design:

It follows a 12345P format. The trailer design is the same, but it says APP TRLR along the left side and ends in a "T"
I was unable to find the current version of the trailer plate anywhere. If someone is able to locate it, I'd really love to have the photo.
Emergency Vehicles:
This is the North Dakota Highway Patrol license plate design:

It begins with HP and is followed by the unit number.
This is the North Dakota Municipal Police license plate design:

It looks the same as the HP version, but it always seems to say POLICE.
This is the North Dakota Official Vehicle license plate design:

It follows a G12345 format.