Area Code 830-448 located in CRYSTAL CITY, ZAVALA, TX, more detail is as below. Place NPA (Numbering Plan Area) : 830 NXX (Local Number Prefix) : 448 City : CRYSTAL CITY County : ZAVALA State : TX (Texas) NXX Use Type : Wireless NXX Intro Version : 2005-06-25 FIPS (Federal Information Processing Standards) : 48507 LATA (Local Access Transport Area) : 566 Rate Center : CRYSTAL CY ZIP Code Count : 0 ZIP Code Frequency : Most frequently occurring ZIP Code, although percentage is unknown. ZIP Code : 78839 Other Information NPANXX : 830448 Switch CLLI (Common Language Location Identifier) : SNAOTXUFCM0 Time Zone : Central (GMT -06:00) Observes Daylight Saving Time : Yes Company : NEW CINGULAR WIRELESS PCS, LLC - IL OCN (Operating Company Number) : 6534 Coverage Area Name : CRYSTAL CITY Latitude : 28.6813 Longitude : -99.8274 ‹ previous : 830-446 next › : 830-451 Telephone Number List 830-448-0000 ~ 830-448-9999