The Board of Governors is publishing a final amendment to appendix A of Regulation CC that updates the routing numbers for Federal Reserve Banks and Federal Home Loan Banks. Banks generally must provide next-day or second-day availability for checks drawn on these routing numbers. This amendment also reorganizes and clarifies existing information in the introductory material preceding the routing number list. The Board also is providing information about a series of future amendments that the Board will make to appendix A to reflect the restructuring of check processing functions within the Federal Reserve System. These amendments collectively will reduce the number of check processing regions listed in appendix A from 44 to 32, thereby resulting in more checks in the affected regions being local to one another. These amendments will take effect on a staggered basis beginning in the second half of 2003 and ending in late 2004. The Board will publish each amendment in the Federal Register at least 60 days before the effective date.