Calling Nicaragua from the United States explained:

• 011 - US exit code; dial first for international calls made from the USA or Canada
• 505 - Country Code for Nicaragua
• Phone Number - 8 digits
• US to Nicaragua landlines international dialing format: 011 505 2??? ????

How to dial to Nicaragua cellular:

• dialing format for calls to a cell phone: 011 505 X??? ????
• X can be 5, 7 or 8

Phone Books:

• Paginas Amarillas - business search, in Spanish

Updates:

• Nicaragua telephone numbering changes - April 22, 2009