Calling Montserrat from the United States explained:
- 1 - Country Code for Montserrat
- 664 - area code within the NANP
- local phone number - 7 digits
- US to Montserrat international dialing format: 1 + 664 + ??? ????
- this country is part of the North American Numbering Plan - NANP (calling it works like a US state to state call)
- Official Montserrat White and Yellow Pages