Online Research - Directories

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Business Directories

 Telephone and Reverse Directories

Zip & Postal Codes

 

Business Directories

Global Resource Directory
Sponsored by the Michigan State University, contains thousands of international business-trade-related resources.

Global Supplier Directory by Thomas Global Register
Find industrial product and company information from around the world.  

Hoover's Online    
Financial data and personnel information on both private and public companies.

Internet 800 Search            
Lists all toll-free telephone numbers by business category, company name, state, and 800 number.

Kompass Business Directory       
Site for globalized business, covering more than 5 million companies.

Telephone & Reverse Directories

Anywho.com   
This free site lists residential and business phone numbers, including a reverse lookup by phone number.

HowtoCallAbroad.com    
Includes international calling codes, phone books and time zone information.

Mexican Postal Codes           
Servicio Postal Mexicano. In Spanish.

Phonenet UK             
British Telecom provides this telephone directory for people and businesses in the United Kingdom.

Zip & Postal Codes

Canadian Postal Codes  
Index to the postal code for street addresses, rural addresses and post office boxes.

Royal Mail Postcodes                      
The Royal Mail’s guide for locating the Postcodes for any address in the United Kingdom.

World Zip / Postal Codes
World Zip / Postal Code Lookup

ZIP Code Lookup and Address Information                
U.S. Postal Service guide to zip codes for any address, city or state.