[header] How to find a fax number [title] Locate a fax number in a local phone book. [substeps] Search for the name of an organization or business to find the telephone number for that business. If the business has a fax number, it may be listed in the directory next to the phone number or address. 
[title] Search for a fax number on the internet. [substeps] Visit the website of the business or entity of which you need the fax number.