Founded in December 2004, TeleSign is a leading provider of telephone verification services to web-based companies of all sizes. TeleSign's flagship solution, Telephone Verification, allows businesses with an online presence to authenticate their users' identities in real-time. PhoneID, another TeleSign technology, complements Telephone Verification by providing information about both domestic and international telephone numbers, including where a phone number is located and the type of phone associated with a particular number (landline, mobile, VOIP, etc.).