47 C.F.R. § 64.1506 Number designation.
Title 47 - Telecommunication
Any interstate service described in §64.1501(a)(1)–(2), and not subject to the exclusions contained in §64.1501(a)(4), shall be offered only through telephone numbers beginning with a 900 service access code. [59 FR 46770, Sept. 12, 1994]
Title 47: Telecommunication
PART 64—MISCELLANEOUS RULES RELATING TO COMMON CARRIERS
Subpart O—Interstate Pay-Per-Call and Other Information Services
§ 64.1506 Number designation.
