Area Code 631-870 located in CENTRAL ISLIP, SUFFOLK, NY, more detail is as below. Place NPA (Numbering Plan Area) : 631 NXX (Local Number Prefix) : 870 City : CENTRAL ISLIP County : SUFFOLK State : NY (New York) NXX Use Type : Landline NXX Intro Version : 2000-08-20 FIPS (Federal Information Processing Standards) : 36103 LATA (Local Access Transport Area) : 132 Rate Center : CENTRAISLP ZIP Code Count : 1 ZIP Code Frequency : 100 ZIP Code : 11722 Other Information NPANXX : 631870 Switch CLLI (Common Language Location Identifier) : NYCMNYBXDSK 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 : PAETEC COMMUNICATIONS, INC. - NY OCN (Operating Company Number) : 4152 Coverage Area Name : HUNTINGTON Latitude : 40.8349 Longitude : -73.3456 ‹ previous : 631-869 next › : 631-871 Telephone Number List 631-870-0000 ~ 631-870-9999