Area Code 817-203 located in IRVING, DALLAS, TX, more detail is as below. Place NPA (Numbering Plan Area) : 817 NXX (Local Number Prefix) : 203 City : IRVING County : DALLAS State : TX (Texas) NXX Use Type : Landline NXX Intro Version : 1997-10-11 FIPS (Federal Information Processing Standards) : 48113 LATA (Local Access Transport Area) : 552 Rate Center : GRAPEVINE ZIP Code Count : 0 ZIP Code Frequency : Second most frequently occurring ZIP Code, although percentage is unknown. ZIP Code : 75062 Other Information NPANXX : 817203 Switch CLLI (Common Language Location Identifier) : IRNGTXLBDS0 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 : BROOKS FIBER PROPERTIES OF TEXAS - TX OCN (Operating Company Number) : 7249 Coverage Area Name : IRVING Latitude : 32.8922 Longitude : -96.9877 ‹ previous : 817-202 next › : 817-203 Telephone Number List 817-203-0000 ~ 817-203-9999