When a foreign corporation authorized to transact business in this state, or not authorized to transact business in this state but doing so, fails to appoint or maintain a registered agent in this state, or when a registered agent cannot with reasonable diligence be found at the registered office, or when the certificate of authority of a foreign corporation is suspended or revoked, the commissioner is an agent upon whom process, notice, or demand may be served. Service is made upon the commissioner as provided in AS 10.06.175(b).