Federal Rule of Bankruptcy Procedure 5003(e) provides for the Clerk of the United States Bankruptcy Court to maintain a register of mailing addresses for federal and state governmental units and certain taxing authorities. The clerk shall update the register annually, effective January 2 of each year. The mailing address in the register is conclusively presumed to be a proper address for the governmental unit, but the failure to use that mailing address does not invalidate any notice that is otherwise effective under applicable law.
The Clerk shall publish a current Register of Mailing Addresses (Matrix List for the United States as Creditor) annually on each January 2nd, and may update the Register more often as deemed appropriate by the Clerk.
HOW TO BE DESIGNATED ON CLERK REGISTER:
To be listed in the Register, an appropriate official of the governmental unit must complete and submit a Request for Listing for each address the governmental unit wishes to appear in the Register. The completed form must include the governmental unit's official name, its complete mailing address for service of process, a telephone number available for users of the Register who may have questions concerning the information listed, the date on which the request was submitted to the Court, and the title and signature of the requesting official.
Governmental units may have multiple addresses listed in the Register. However, those requesting the listing of multiple addresses must submit a separate Request for Listing for each address, and must include a brief statement, subject to the approval of the Clerk of Court, explaining to the users of the Register the circumstances in which each address is to be used.
A governmental unit whose address is already listed in the Register may update its information at any time by submitting a new and complete Request for Listing.