Area Code 210-528 located in HOUSTON, HARRIS, TX, more detail is as below. Place NPA (Numbering Plan Area) : 210 NXX (Local Number Prefix) : 528 City : HOUSTON County : HARRIS State : TX (Texas) NXX Use Type : Landline NXX Intro Version : 1996-10-15 FIPS (Federal Information Processing Standards) : 48201 LATA (Local Access Transport Area) : 566 Rate Center : SANANTONIO ZIP Code Count : 1 ZIP Code Frequency : 25 ZIP Code : 77002 Other Information NPANXX : 210528 County Population : 0 Switch CLLI (Common Language Location Identifier) : SNANTXCADS2 MSA CBSA (Core Based Statistical Area) : Houston-Sugar Land-Baytown, TX MSA CBSA Code (Core Based Statistical Area) : 26420 Time Zone : Central (GMT -06:00) Observes Daylight Saving Time : Yes Company : SOUTHWESTERN BELL OCN (Operating Company Number) : 9533 Coverage Area Name : SAN ANTONIO Latitude : 29.4278 Longitude : -98.4894 ‹ previous : 210-528 next › : 210-528 Telephone Number List 210-528-0000 ~ 210-528-9999