Home › CFR › Title 12 › Part 25312 CFR Part 253 — Regulations Implementing the Adjustable Interest Rate (LIBOR) Act (Regulation ZZ)§ 253.1— Authority, purpose, and scope.§ 253.2— Definitions.§ 253.3— Applicability.§ 253.4— Board-selected benchmark replacements.§ 253.5— Benchmark replacement conforming changes.§ 253.6— Preemption.§ 253.7— Continuity of contract and safe harbor.