Area code 340 is the telephonearea code in theNorth American Numbering Plan (NANP) for theU.S. Virgin Islands. Area code 340 was created by split from the Caribbean numbering plan area witharea code 809 in 1998.

Apermissive dialing period was conducted from 1 June 1997 to 30 June 1998.

Calls within the U.S. Virgin Islands are dialed with the seven digits of the telephone number. Calls from other NANP countries or territories to the U.S. Virgin Islands, requireten-digit dialing after dialing the trunk code1.

• List of North American Numbering Plan area codes
• Area codes in the Caribbean

18°21′N64°56′W / 18.350°N 64.933°W /18.350; -64.933

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