had the 718 code, and Bronx residents telephoning Manhattan had to dial 212. 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 2018. This effectively allocates 23.4 million numbers to a borough of 1.6 million people. Marble Hill 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, as it would have been too expensive for New York Telephone to rewire them. Market reputation A business with a 212 area code is often perceived as having the prestige of Manhattan and the convenience of stability, particularly if a number has been in service for several decades. One example is PEnnsylvania 6-5000 (currently 212-736-5000), the number for the Hotel Pennsylvania in Midtown. Prior to its closure in 2020 and subsequent demolition, the hotel claimed it was the oldest telephone number used continuously in New York City, though this is disputed. The owners of the hotel have stated the phone number will remain in use for the new office tower replacing the historic hotel. The hotel’s phone number appears as the title of the 1940 Glenn Miller Orchestra hit song, Pennsylvania 6-5000. The scarcity of available telephone numbers in area code 212, combined with it being