Phone number whois is a website that lets you to perform searches for a phone number or address. You can find out the details of any person living in the united states if you know either their phone number or address. If you have their address you can try out the reverse phone whois and get all the necessary details. There are two search options available in this website to help you in the process of searching for numbers. The first search button is the free telephone lookup. Just enter a telephone number and find out all the general information you need. However if you are looking for some specific details you may have to use the advance phone report button in order to get the details of owner’ name, address, etc. The phone lookup whois helps you find out many details at the click of a mouse.