Area Code 405-638 located in ANADARKO, CADDO, OK, more detail is as below. Place NPA (Numbering Plan Area) : 405 NXX (Local Number Prefix) : 638 City : ANADARKO County : CADDO State : OK (Oklahoma) NXX Use Type : Wireless NXX Intro Version : 2003-02-09 FIPS (Federal Information Processing Standards) : 40015 LATA (Local Access Transport Area) : 536 Rate Center : ANADARKO ZIP Code Count : 0 ZIP Code Frequency : Most frequently occurring ZIP Code, although percentage is unknown. ZIP Code : 73005 Other Information NPANXX : 405638 Switch CLLI (Common Language Location Identifier) : CHCKOK171MD Time Zone : Central (GMT -06:00) Observes Daylight Saving Time : Yes Company : CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK OCN (Operating Company Number) : 5813 Coverage Area Name : ANADARKO Latitude : 35.0742 Longitude : -98.2462 ‹ previous : 405-637 next › : 405-639 Telephone Number List 405-638-0000 ~ 405-638-9999