North American Numbering Plan

The North American Numbering Plan (NANP) is a telephone numbering plan that encompasses 25 distinct regions in twenty countries primarily in North America, including the Caribbean and the U.S. territories. Not all North American countries participate in the NANP.

Source: Wikipedia

Country International Calling Code
American Samoa +1 XXX-XXX-XXXX
Anguilla +1 XXX-XXX-XXXX
Antigua and Barbuda +1 XXX-XXX-XXXX
Bahamas +1 XXX-XXX-XXXX
Barbados +1 XXX-XXX-XXXX
Bermuda +1 XXX-XXX-XXXX
British Virgin Islands +1 XXX-XXX-XXXX
Canada +1 XXX-XXX-XXXX
Cayman Islands +1 XXX-XXX-XXXX
Dominica +1 XXX-XXX-XXXX
Dominican Republic +1 XXX-XXX-XXXX
Grenada +1 XXX-XXX-XXXX
Guam +1 XXX-XXX-XXXX
Jamaica +1 XXX-XXX-XXXX
Montserrat +1 XXX-XXX-XXXX
Northern Mariana Islands +1 XXX-XXX-XXXX
Puerto Rico +1 XXX-XXX-XXXX
Saint Kitts and Nevis +1 XXX-XXX-XXXX
Saint Lucia +1 XXX-XXX-XXXX
Saint Vincent and Grenadines +1 XXX-XXX-XXXX
Sint Maarten +1 XXX-XXX-XXXX
Trinidad and Tobago +1 XXX-XXX-XXXX
Turks and Caicos Islands +1 XXX-XXX-XXXX
United States +1 XXX-XXX-XXXX
United States Virgin Islands +1 XXX-XXX-XXXX