Area Code 631-600 located in COMMACK, SUFFOLK, NY, more detail is as below. Place NPA (Numbering Plan Area) : 631 NXX (Local Number Prefix) : 600 City : COMMACK County : SUFFOLK State : NY (New York) NXX Use Type : Landline NXX Intro Version : 4/23/2012 FIPS (Federal Information Processing Standards) : 36103 LATA (Local Access Transport Area) : 132 Rate Center : W COMMACK ZIP Code Count : 0 ZIP Code Frequency : 0 ZIP Code : 11725 Other Information NPANXX : 631600 MSA CBSA (Core Based Statistical Area) : New York-Northern New Jersey-Long Island, NY-NJ-PA MSA CBSA Code (Core Based Statistical Area) : 35620 Time Zone : Eastern (GMT -05:00) Observes Daylight Saving Time : Yes Company : TELCENTRIS COMMUNICATIONS, LLC - NY OCN (Operating Company Number) : 596G Coverage Area Name : COMMACK Latitude : 40.8382 Longitude : -73.3116 ‹ previous : 631-599 next › : 631-601 Telephone Number List 631-600-0000 ~ 631-600-9999