Area Code 254-344 located in MOUNT CALM, HILL, TX, more detail is as below. Place NPA (Numbering Plan Area) : 254 NXX (Local Number Prefix) : 344 City : MOUNT CALM County : HILL State : TX (Texas) NXX Use Type : Landline NXX Intro Version : 1997-07-06 FIPS (Federal Information Processing Standards) : 48217 LATA (Local Access Transport Area) : 556 Rate Center : PRAIRIE HL ZIP Code Count : 14 ZIP Code Frequency : 8 ZIP Code : 76673 Other Information NPANXX : 254344 County Population : 0 Switch CLLI (Common Language Location Identifier) : PRHLTXXARS0 Time Zone : Central (GMT -06:00) Observes Daylight Saving Time : Yes Company : WINDSTREAM SUGAR LAND, INC. OCN (Operating Company Number) : 2147 Coverage Area Name : RICHLAND Latitude : 31.6589 Longitude : -96.7893 ‹ previous : 254-344 next › : 254-344 Telephone Number List 254-344-0000 ~ 254-344-9999