47 C.F.R. § 51.401 State authority.
Title 47 - Telecommunication
A state commission shall determine whether a telephone company is entitled, pursuant to section 251(f) of the Act, to exemption from, or suspension or modification of, the requirements of section 251 of the Act. Such determinations shall be made on a case-by-case basis.
Title 47: Telecommunication
PART 51—INTERCONNECTION
Subpart E—Exemptions, Suspensions, and Modifications of Requirements of Section 251 of the Act
§ 51.401 State authority.

