Okla. Stat. tit. 43, § 43-421
Authorization of public or private agencies to provide
registry - Maximum fee.
The associate district judge in each county within this state
may authorize one or more public or private agencies to provide a
child visitation registry program. Eligible governmental agencies
shall include, but not be limited to, county sheriffs' offices,
State Department of Health child guidance centers, social service
agencies, and police departments. A participating agency may charge
a fee not to exceed Two Dollars ($2.00) per parent, per visit.