1. A method to identify subscriber activity, comprising: receiving a first set of client telephone number (TN) data associated with a client and a current time period; receiving a second set of client TN data associated with a prior time period; receiving a first set of subscriber activity data associated with the current time period; identifying a TN that is in the first set of subscriber activity data and is absent from at least one of the first or second sets of client TN data; and identifying the TN with at least one of a new inroad for a competitor or a new inroad for the client based on at least one activity code from the first set of subscriber activity data.