NumberZoom is a site is dedicated to creating a comprehensive user-created directory of Caller ID numbers that users don’t recognize. Examples of mystery Caller ID’s may include Telemarketers, Collection Agencies, Political Campaigns and other unknown numbers/ID’s left on the Caller ID machine. Along with contributors, Numberzoom editors constantly build out their database of area codes and phone numbers in order to track down mystery callers. Numberzoom is a collaborative website
