Directories

AmeriCom Long Distance Area Decoder
http://decoder.americom.com
Search for an area/city or country codes by place name for phone numbers throughout the world
American School Directory
http://www.asd.com/
Search for information on each of America's 106,000 K-12 schools
Switchboard
http://www.switchboard.com/
Nationwide business & residential directory
U.S. Zip Code Information
http://www.usps.gov/ncsc/lookups/lookup_zip+4.html
Check for a 9 digit zip code for any U.S. address