Time Warner Cable telephone customers may find their phone numbers missing from directory assistance records and residential phone books.

This year, the cable company began charging directory publishers for its residential customer listings and some, including Frontier Communications, have refused to pay.

As a result, customers are likely to find their next copy of the White Pages thinner than it used to be.

The usefulness of telephone directories and directory assistance services have both been in decline for years as customers migrate to unlisted cell phones. But the loss of cable phone customers from phone books is a new trend. In the past, cable companies provided the listings for free to most directory publishers as a service to customers who wanted to keep their phone numbers in the directory. But now those listings are a money-maker, only available for sale.

Phil Yawman, Frontier Communications vice president and general manager for the Rochester, N.Y. area — Frontier’s largest urban market — told WXXI News the phone company opted not to buy the listings. 

Time Warner Cable spokesperson Joli Plucknette-Farmen said charging a fee for residential directory listings is accepted by the Federal Communications Commission.

Frontier, like many other phone companies, also no longer provides automatic delivery of residential White Pages listings, although the lucrative Yellow Pages will still appear on customer doorsteps.