Visit usaphonenumbers.org to get information about unlisted number, prank calls, or annoyed call. They allow you to search and lookup information on all US phone numbers. With reverse phone lookup you can find the person who called you, so you can start feeling comfortable about answering the phone when it rings. You have the option of searching for numbers by state, area code, city, or simply search by inserting the full phone number into the search box provided.