The state Public Service Commission ruled Monday that Cincinnati Bell, which provides telephone service in Northern Kentucky, has to provide White Pages directories only to customers who request them.
The company plans to continue distributing Yellow Pages to all customers.
The commission said Cincinnati Bell's plan complies with state law that requires certain phone companies to continue to provide subscribers with directories. The company has said it plans to make the contents available online, and subscribers who request them will receive them free.
The Yellow Pages directories will include the listings of emergency and government information, the PSC said.
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Cincinnati Bell provides telephone service in Boone, Campbell, Gallatin, Grant, Kenton and Pendleton counties. Most of the company's customers are in Ohio. It is the first major local phone company in Kentucky to limit its White Pages, the PSC said.