Area Code 918-233 located in WELCH, CRAIG, OK, more detail is as below. Place NPA (Numbering Plan Area) : 918 NXX (Local Number Prefix) : 233 City : WELCH County : CRAIG State : OK (Oklahoma) NXX Use Type : Landline NXX Intro Version : 1996-01-10 FIPS (Federal Information Processing Standards) : 40035 LATA (Local Access Transport Area) : 532 Rate Center : SO CHETOPA ZIP Code Count : 58 ZIP Code Frequency : 100 ZIP Code : 74369 Other Information NPANXX : 918233 Switch CLLI (Common Language Location Identifier) : CHTPKSBERS0 Time Zone : Central (GMT -06:00) Observes Daylight Saving Time : Yes Company : SOUTHWESTERN BELL OCN (Operating Company Number) : 9533 Coverage Area Name : WELCH Latitude : 37.0366 Longitude : -95.0919 ‹ previous : 918-232 next › : 918-234 Telephone Number List 918-233-0000 ~ 918-233-9999