Area Code 939-865 located in MAYAGUEZ, MAYAGUEZ, PR, more detail is as below. Place NPA (Numbering Plan Area) : 939 NXX (Local Number Prefix) : 865 City : MAYAGUEZ County : MAYAGUEZ State : PR (Puerto Rico) NXX Use Type : Wireless NXX Intro Version : 11/11/2008 FIPS (Federal Information Processing Standards) : 72097 LATA (Local Access Transport Area) : 820 Rate Center : MAYAGUEZ ZIP Code Count : 0 ZIP Code Frequency : 0 ZIP Code : 00682 Other Information NPANXX : 939865 MSA CBSA (Core Based Statistical Area) : Mayagüez, PR MSA CBSA Code (Core Based Statistical Area) : 32420 Time Zone : Atlantic (GMT -04:00) Observes Daylight Saving Time : No Company : SUNCOM DBA T-MOBILE USA OCN (Operating Company Number) : 8645 Coverage Area Name : MAYAGUEZ Latitude : 18.2003 Longitude : -67.1433 ‹ previous : 939-777 next › : 939-891 Telephone Number List 939-865-0000 ~ 939-865-9999