Area Code 817-477 located in ALVARADO, JOHNSON, TX, more detail is as below. Place NPA (Numbering Plan Area) : 817 NXX (Local Number Prefix) : 477 City : ALVARADO County : JOHNSON State : TX (Texas) NXX Use Type : Landline NXX Intro Version : 1994-02-04 FIPS (Federal Information Processing Standards) : 48251 LATA (Local Access Transport Area) : 552 Rate Center : MANSFIELD ZIP Code Count : 65 ZIP Code Frequency : 2 ZIP Code : 76009 Other Information NPANXX : 817477 Switch CLLI (Common Language Location Identifier) : FTWOTXBRDS0 MSA CBSA (Core Based Statistical Area) : Dallas-Fort Worth-Arlington, TX MSA CBSA Code (Core Based Statistical Area) : 19100 Time Zone : Central (GMT -06:00) Observes Daylight Saving Time : Yes Company : SOUTHWESTERN BELL OCN (Operating Company Number) : 9533 Coverage Area Name : MANSFIELD Latitude : 32.5655 Longitude : -97.1420 ‹ previous : 817-477 next › : 817-477 Telephone Number List 817-477-0000 ~ 817-477-9999