Area code 212 is one of the
original North American area codes assigned by the
American Telephone and Telegraph Company (AT&T) in 1947, originally serving all five
boroughs of New York City. For the next 37 years, New York City was one of the largest toll-free calling zones in North America. On February 1, 1984, in response to a request from
New York Telephone, the
New York Public Service Commission voted to create a second area code for New York City. The split was implemented in a way that divided the city's three million telephone numbers roughly in half.
Brooklyn,
Queens, and
Staten Island received the new
area code 718, while Manhattan and
the Bronx kept 212. Amid protests from local officials and state lawmakers, the commission was persuaded by New York Telephone's reasoning that a new area code was needed to "prevent an impending exhaustion of
telephone numbers." New York Telephone made some 718 telephone numbers operational several days in advance. Despite state lawmakers for the outer boroughs threatening legislation to stop the division, On September 25, 1993, callers from the Bronx no longer had to dial 718 to reach Brooklyn, Queens and Staten Island. In 1992, the entire city was
overlaid with
area code 917, which had originally been planned for only the Bronx and mobile service. With available 917 mobile numbers becoming scarce, area code 646 was implemented on July 1, 1999, as an overlay for Manhattan. During November 2015, area code 332 was assigned as a third overlay area code for Manhattan, the fourth serving the area and the seventh serving New York City. Area code 332 became active on June 10, 2017, as area code 212 was expected to become depleted of numbers during the third quarter of 2017, and 646 is expected to become depleted of numbers by 2030. The Manhattan neighborhood of
Marble Hill is located in the 718/347/929 numbering plan area (NPA), rather than the Manhattan NPA. Marble Hill, although administratively a part of the Borough of Manhattan, was severed from Manhattan Island by the construction of the
Harlem River Ship Canal during 1895. The by-passed segment of the
Harlem River was filled in 1914, making the community a geographic part of the Bronx. When the Bronx was reassigned with area code 718 in 1992, Marble Hill residents fought unsuccessfully to retain 212. Marble Hill's trunks are wired into the Bronx wire center, and it would have been too expensive for New York Telephone to rewire them. ==Market reputation==