Appears on caller ID as Houston ,Tx  281-387-3097.  I did not know the caller, so I called the number back to identify.  Person answered  as AT&T, wanted to know if I received my new telephone book yet.
I answered yes, then person asked for my first name.  After I hung up, the request for my first name bothered me, so I am concerned if this is was really AT&T.  Is this a cell phone number and why would the caller be using a cell phone to verify?