Section 7939 Of Chapter 3.5. New Area Codes From California Public Utilities Code >> Division 4. >> Chapter 3.5.
7939
. (a) If the commission or an authorized federal agency
establishes a process to ensure that telephone numbers can be
allocated in blocks smaller than 10,000, the commission shall require
that a telephone corporation return to the North American Numbering
Plan Administrator blocks of telephone numbers for reassignment, in a
quantity determined by the commission.
(b) The commission shall direct the North American Numbering Plan
Administrator to seek the return of blocks of numbers smaller than
10,000 not in use. The commission, for purposes of this section,
shall define "not in use."