Massachusetts General Laws
Article 1 - General Provisions.
Section 1-103 - Tribunals and Support Enforcement Agency of the Commonwealth

Section 1–103. Tribunals and support enforcement agency of the commonwealth.
(a) The probate and family court, the district court and the Boston municipal court departments of the trial court are the tribunals of the commonwealth.
(b) The department of revenue is the support enforcement agency of the commonwealth.