Calling Honduras from the United States explained:

• 011 - US exit code; dial first for international calls made from the USA or Canada
• 504 - Country Code for Honduras
• Phone Number - 8 digits
• US to Honduras (landlines) international dialing format: 011 504 2??? ????

How to dial to Honduras cellular:

• dialing format for calls to a cell phone: 011 504 X ??? ????
• X can be: 3, 7, 8 or 9

Phone Books:

• Paginas Amarillas - Honduras Yellow Pages, in Spanish
• Ditel - business directory, in Spanish

Updates:

• Honduras telephone numbering changes - November 2010