Area Code 623-201 located in PHOENIX, MARICOPA, AZ, more detail is as below. Place NPA (Numbering Plan Area) : 623 NXX (Local Number Prefix) : 201 City : PHOENIX County : MARICOPA State : AZ (Arizona) NXX Use Type : Landline NXX Intro Version : 7/11/2008 FIPS (Federal Information Processing Standards) : 04013 LATA (Local Access Transport Area) : 666 Rate Center : PHOENIX ZIP Code Count : 0 ZIP Code Frequency : 0 ZIP Code : 85014 Other Information NPANXX : 623201 MSA CBSA (Core Based Statistical Area) : Phoenix-Mesa-Glendale, AZ MSA CBSA Code (Core Based Statistical Area) : 38060 Time Zone : Mountain (GMT -07:00) Observes Daylight Saving Time : No Company : XO ARIZONA, INC. OCN (Operating Company Number) : 4793 Coverage Area Name : PHOENIX Latitude : 33.5443 Longitude : -112.0485 ‹ previous : 620-995 next › : 623-202 Telephone Number List 623-201-0000 ~ 623-201-9999