Area codes in the Caribbean

From 1958 to about 1995, most of the British West Indies in the Caribbean Basin, Bermuda, the U.S. Virgin Islands, the Dominican Republic and Puerto Rico shared a single area code 809 in the North American Numbering Plan. By the mid-1990s, with the proliferation of fax machines, mobile phones, computers, and pagers in the region, the 809 area code was almost exhausted. New area codes were added, and since 1999 no two territories share a code. 809 is now used only in the Dominican Republic.

Of the above territories, the only one that was outside the NANP in 1995 was Sint Maarten, part of the Netherlands Antilles until dissolution in 2010 and now a constituent country within the Kingdom of the Netherlands. Sint Maarten used the country code +599 of the Netherlands Antilles until joining the NANP on September 30, 2011, with area code 721.

The following was the 1994-1995 numbering plan for 809. Starting in the 1980s, Puerto Rico, Bermuda and the Dominican Republic began to use prefixes from unused ranges throughout the 2xx to 9xx range. Historic (1960s-mid-1980s) ranges are shown in parentheses.

The number pool of the area code was divided between the regions by the national number, which was from two to four digits long, leaving five to three digits, respectively, of the total of 10 digits of a complete telephone number for local telephone number assignments. The national number appeared in local telephone directories.

Caribbean nations with a larger numbering resource requirement used seven-digit dialing, and had no need for a national number.

In chart above, digits in italics were just the initial digit(s) of seven-digit number dialing.

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