US lawFederal (United States)RegulationsTitle 47 CFR — TelecommunicationChapter I — FEDERAL COMMUNICATIONS COMMISSIONPart 61 — TARIFFSSubpart G — Specific Rules for Tariff Publications of Dominant and Nondominant Carriers61.6647 C.F.R. § 61.66Scope.Last amended: 2017Year: 2026Length: 19 wordsOfficial source Cite as 47 C.F.R. § 61.66 (2026)The rules in this subpart apply to all issuing carriers, unless otherwise noted. [76 FR 43216, July 20, 2011]Next47 C.F.R. § 61.68