Calling El Salvador from the United States explained:

• 011 - US exit code; dial first for international calls made from the USA or Canada
• 503 - Country Code for El Salvador
• Phone Number - 8 digits, all fixed numbers start with a 2
• US to El Salvador international dialing format : 011 503 2??? ????

How to dial to El Salvador cellular:

• dialing format for calls to a cell phone: 011 503 7??? ????

Phone Books:

• Paginas Amarillas - Yellow Pages for El Salvador, in Spanish