Md. Code, Pub. Util. § 8-206

(a) This section applies to telephone directories distributed by, or on behalf of, a telephone company other than advertisement–based business directories. (b) A telephone company may not be required to distribute a telephone directory to an address in the State unless the property owner or an occupant requests the telephone directory. (c) (1) If a telephone company elects not to distribute a print telephone directory to a customer at an address in the State, the telephone company shall provide notice as to how the customer may request a print telephone directory. (2) The notice required under paragraph (1) of this subsection shall: (i) include a toll–free telephone number a customer may call to request a print telephone directory; and (ii) be included: 1. in each customer’s bill at least once each year; 2. on the telephone company’s website; and 3. in bold red print, on the front cover and the table of contents page of any print advertisement–based business directory distributed on behalf of the telephone company through September 30, 2016. (3) If a customer requests a print telephone directory, the telephone company shall deliver the print telephone directory to the customer at no cost to the customer.