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Use AT&T's AnyWho to find phone numbers, addresses, maps and directions for Business and People in the U.S.
Find a Canadian zip code or track a package on this offical site.
Telephone search engine that returns the city, state, and country of any phone number in the world.
This site provides users with information on how to dial internationally from the USA, Canada or from any other country. Telephone country codes and international area codes are displayed by country, with additional info featured such as city and cellular codes, telephone books.
International Telephone Directories
This site offers directory services for over 187 countries.
Internet 800 Directory
Search this site by product, service or company name. Enter an 800 number to determine the owner.
Find addresses, phone numbers and businesses, get maps and directions, do a reverse search on this site.
Telephone Prefix Locator
Have a mystery phone number from the U.S., Canada or the Caribbean? Find out where it's located using this site, which allows 20 lookups within a 48-hour period.
United States Postal Service
Find a zip code, track a package, calculate postage or find a post office using this official site.
SuperMedia publishes Verizon's online yellow pages.
Who Where? People Finder
Lycos is behind the white and yellow pages on this site.
Yahoo People Finder
Yahoo offers phone number and email address searching.