47 CFR 52.9 - General requirements.
(a) To ensure that telecommunications numbers are made available on an equitable basis, the administration of telecommunications numbers shall, in addition to the specific requirements set forth in this subpart:
(3) Not unduly favor one telecommunications technology over another.
(b) If the Commission delegates any telecommunications numbering administration functions to any State or other entity pursuant to 47 U.S.C. 251(e)(1), such State or entity shall perform these functions in a manner consistent with this part.