Area Code 210-504 located in BEXAR, BEXAR, TX, more detail is as below. Place NPA (Numbering Plan Area) : 210 NXX (Local Number Prefix) : 504 City : BEXAR County : BEXAR State : TX (Texas) NXX Intro Version : 6/23/2010 Rate Center : SANANTONIO ZIP Code Count : 0 ZIP Code Frequency : 0 Other Information NPANXX : 210504 County Population : 0 Time Zone : Central (GMT -06:00) Observes Daylight Saving Time : Yes Latitude : None Longitude : None ‹ previous : 210-503 next › : 210-505 Telephone Number List 210-504-0000 ~ 210-504-9999