The blue area is New York State; the red area is area code 917 and overlay
Area code 917 is a New York Citytelephonearea code. It is the standard cellular/pager/voicemail phone area code for all of the city's boroughs and is an overlay to 212, 347, 646 and 718. Occasionally, 917 is also assigned to landlines (most commonly in Manhattan, due in large part to the sparse availability of area code 212). Area codes 646 (for Manhattan), 718 and 347 (for Brooklyn, Queens, The Bronx, and Staten Island) are increasingly being assigned to cellular/pager/voicemail numbers as well.
Area code 917 is the first overlay area code in the North American Numbering Plan. It is also the only "service-specific" area code in the NANP. Shortly after its implementation, the Federal Communications Commission (FCC) ruled that new area codes cannot be assigned as service-specific, but allowed 917 to remain as such.[1] As a result of a later court order, area code 917 was opened up to all services.
