Answer:

unlisted

AnswerCrossword Clue
UNLISTEDLike some numbers
UNLISTEDNot in the book
UNLISTEDNot in the phone book
UNLISTEDLike some phone numbers
UNLISTEDLike many a celebrity's phone number
UNLISTEDNonpublished, in a way
UNLISTEDNot admitted to trading on the Exchange.
UNLISTEDNot in the book.
UNLISTEDNot on the roster
UNLISTEDKind of telephone
UNLISTEDLike some stocks