Area code 473 is the local telephone area code of Grenada, Carriacou and Petite Martinique. The 473 area code, which spells GRE, was created during a split from the original area code 809 which began permissive dialing on 31 October 1997 and ended 31 October 1998.
For calls placed within Grenada, Carriacou or Petite Martinique, only the seven-digit local number is dialed. Calls to Grenada from anywhere in the United States or Canada are dialed 1 + 473 + seven-digit phone number.