Bell South Yellow Pages Click here to find businesses anywhere! Zip Code Locator The US Postal Service offers this page to locate a zip code or associate a city with a known zip code. Telephone Directories on the Web One of the most extensive collections of telephone directories on the web, this site allows for searches of phone numbers, email addresses and even reverse searches (by number). The AT&T 800 Directory An AT&T Sponsored site, it allows you to look up business sites by their address or by number. Fast Area Code Lookup (United States and Canada) You know the city and state? This site will give you the area code. Americom Long Distance Area Decoder Use this site to cross reference an area code with its city and vice versa.