4. A method as defined in claim 3, wherein the step of deriving the plurality of locality name candidates from the released telephone number comprises deriving the plurality of locality name candidates from an NPA-NXX portion of the released telephone number.
3. A method as defined in claim 2, wherein: the step of prompting the caller comprises prompting the caller to speak the name of a locality corresponding to the desired listing; and the step of deriving the plurality of name candidates comprises deriving a plurality of locality name candidates from the released telephone number.