"Telecommunications utility" does not include:
(A) Any plant owned or operated by a municipality.
(B) Any corporation not providing intrastate telecommunications service to the public in this state, whether or not the corporation has an office in this state or has an affiliated interest with a telecommunications utility as defined in this chapter.
(C) Any person acting only as a competitive telecommunications provider.
(D) Any corporation, company, individual or association of individuals providing only telephone customer premises equipment to the public.