D.C. Code § 46-352.02
Duration of personal jurisdiction.
Personal jurisdiction acquired by a tribunal of the District in a proceeding under this chapter or other law of the District relating to a support order continues as long as a tribunal of the District has continuing, exclusive jurisdiction to modify its order or continuing jurisdiction to enforce its order as provided by §§ 46-352.05 , 46-352.06 , and 46-352.11 .