Canada TollFree
Find businesses and other toll-free telephone numbers using this online directory of products and services from anywhere in Canada. Search by keyword or business name.

Canada 411
Search for business and residential listings for Canada. Includes reverse lookup for phone numbers and for addresses, as well as toll-free numbers.

Government Electronic Delivery Services: Direct 500
Listings for Government of Canada departments, organizations, and employees, including addresses, telephone and fax numbers. Search by staff name or by department.

INFO-GO
Search or browse the online telephone directory of phone numbers, addresses, and e-mail addresses for Ontario Government offices and staff, or locate Ontario government offices and services.

Canada Post - Postal Code Lookup
Find the Canadian postal code you need in seconds using this easy to complete form.

Frank's compulsive guide to postal addresses

The Kermit Project at Columbia University maintains this listing of links to postal authorities in many countries. Included are instructions on interpreting postal codes to ensure that you enter the correct information when addressing international mail.

Reverse phone by area code and number
Enter a telephone number and find out who has it. Reverse phone searches can find regular home phone numbers, toll-free numbers as well as numbers with characters.

Switchboard
This online directory finds business and residential listings for the United States.