N.C. Gen. Stat. § 58-49-10: How to show jurisdiction.

A person may show that it is subject to the exclusive jurisdiction of another agency or subdivision of this State or the federal government, by providing to the Commissioner the appropriate certificate, license, or other document issued by the other governmental agency that permits or qualifies it to provide those services. If no documentation is issued by that other agency, the person may provide a certification by an official of that agency that states that the person is under the exclusive jurisdiction of that agency. (1985, c. 304, s. 1; 1993 (Reg. Sess., 1994), c. 569, s. 3.)