Calling Senegal from the United States explained:

• 011 - US exit code; dial first for international calls made from the USA or Canada
• 221 - Country Code for Senegal
• Phone Number - 9 digits
• US to Senegal landlines international dialing format: 011 221 3? ??? ????

How to dial to Senegal cellular:

• dialing format for calls to a cell phone: 011 221 7? ??? ????

Phone Books:

• Les Pages Jaunes - Senegal business directory, in French