Subject Specific Databases

Acronym Finder (http://www.acronymfinder.com/)

Decipher acronymns and abbreviations. Includes reverse look-up.

BigBook (http://www.bigbook.com/)

Search for U.S. Businesses in an online phone book. Powered by Superpages.com.

Infobel.com (http://www.infobel.com)

Links to business (yellow pages) and name (white pages) directories in 184 countries.

InfoSpace (http://www.infospace.com/home/search)

Includes yellow pages, white pages, web search, reverse lookup, email search, world directories.

Internet Toll Free National Directory (http://www.internettollfree.com/)

Search by keyword, by category, and by phone number.

SMARTpages.com (http://www.smartpages.com/)

SBC's national online yellow pages.

Switchboard (http://www.switchboard.com/)

Find a business or find a person. Includes Reverse Directory and area code lookup.

The Ultimate White pages (http://www.theultimates.com/white/)

The Ultimate White Pages is a centralized, fast common interface to six six different phone number directories on the Internet. Includes Reverse Directory lookup.

Related:

• The Ultimate E-mail Directory. (http://www.theultimates.com/email/)
  
• The Ultimate Yellow Pages. (http://www.theultimates.com/yellow/)
  

Zip Code Directory (http://zip4.usps.com/zip4/welcome.jsp)

From the United States Postal Service, locate a ZIP+4 code for addresses, associate ZIP Codes with city/state names, and locate post ofices.

YoloLink: Directory of Community Information & Services for Yolo County, California (http://web-iii.yolocounty.org:81/)

Directory of Community Information and Services for Yolo County, California