CFR > Title 31 - Money and Finance: Treasury > SUBTITLE B—Regulations Relating to Money and Finance > CHAPTER II—FISCAL SERVICE, DEPARTMENT OF THE TREASURY (parts 200 to 391) > SUBCHAPTER B—BUREAU OF THE PUBLIC DEBT (parts 306 to 391) > PART 363—REGULATIONS GOVERNING SECURITIES HELD IN TREASURYDIRECT > SUBPART D—Zero-Percent Certificate of Indebtedness (§363.130 to §363.149-363.152) > 363.137—What do I need to know about the registration of a zero-percent certificate of indebtedness?