https://www.area-codes.us/646-area-code/
646 area code serves the Manhattan area in New York, USA. If you are a business, looking to break into the Manhattan market. 646 area code overlaps parts of the Bronx, Brooklyn, Queens, and Staten Island. A local phone number with a 646 area code will help you get your foot in the door.
https://www.area-codes.us/347-area-code/
347 Area code is a New York City area code covering the Bronx, Queens, Brooklyn. This area code was assigned on February 19, 1999. It went live on October 1, 1999. 347 Area code is a general purpose code. Service area 347 overlaps with area codes 718 917 929. The dialing pattern for local calls within the same NPA (area code) is 1+10D.