You can now reconnect with your friends or relatives with whom you have lost touch. Phone number whois is a website that helps you to trace callers with the help of their area code or phone number. If you know the area code you can find the exchange information. Once you know the telephone exchange and the phone company you can easily track the person you are looking for. The website offers services for a number of cities in the United states. With the help of an extension you can easily trace callers. Also try the reverse phone whois if you want to find the owner of any cell phone or any unlisted number. Detail such as name, address and location can be found out if you have the number and you want to know the caller. The phone lookup whois lets you to find details of the numbers with ease.