CFR›Title 47›Chapter I›Part 64›47 CFR Part 64 Subpart DD Citation47 CFR Part 64 Subpart DDContainsSections § 64.5000–§ 64.5001CorpusDaily eCFRDisplayed edition2026-09-30Last updated2026-09-30 Subpart DD—Prepaid Calling Card Providers Sections § 64.5000 § 64.5000 Definitions. § 64.5001 § 64.5001 Reporting and certification requirements. Authority47 U.S.C. 151, 152, 154, 201, 202, 217, 218, 220, 222, 225, 226, 227, 227b, 228, 251(a), 251(e), 254(k), 255, 262, 276, 403(b)(2)(B), (c), 616, 620, 716, 1401-1473, unless otherwise noted; Pub. L. 115-141, Div. P, sec. 503, 132 Stat. 348, 1091; Pub. L. 117-338, 136 Stat. 6156.Source71 FR 43673, Aug. 2, 2006, unless otherwise noted.