To look up a phone number on Whitepages.com, select the Phone option at the home page, enter the phone number into the field provided, and click Search. If the phone number is valid, a page displaying information such as the carrier of the line and the state of the possible owner appears.
At Whitepages, you can also run a lookup based on the name of a person or business and the target's current state, city or ZIP code. You can search directly via address, if desired. Apart from Whitepages.com, a phone lookup service is offered on sites such as SpyDialer.com, PeopleSmart.com, AnyWho.com and 411.com, as of September 2015. The lookup procedure for these sites is similar to that of Whitepages.
PeopleSmart has an email lookup feature. However, after running any type of lookup, you must submit your name and email address to view the search results. If you sign up as a premium PeopleSmart member, you get access to more information, such as birth records, work information and death records, if applicable. You also get alerts whenever the site updates information concerning your saved searches.
SpyDialer's phone lookup works with both cellphones and landlines. In addition to reverse phone number lookups, AnyWho offers a direct search through Yellowpages and Whitepages.