Area Code 870-356 located in CADDO GAP, MONTGOMERY, AR, more detail is as below. Place NPA (Numbering Plan Area) : 870 NXX (Local Number Prefix) : 356 City : CADDO GAP County : MONTGOMERY State : AR (Arkansas) NXX Use Type : Landline NXX Intro Version : 1997-07-06 FIPS (Federal Information Processing Standards) : 05097 LATA (Local Access Transport Area) : 528 Rate Center : GLENWOOD ZIP Code Count : 249 ZIP Code Frequency : 10 ZIP Code : 71935 Other Information NPANXX : 870356 Switch CLLI (Common Language Location Identifier) : GLWDARXADS0 Time Zone : Central (GMT -06:00) Observes Daylight Saving Time : Yes Company : WINDSTREAM ARKANSAS, INC. OCN (Operating Company Number) : 1691 Coverage Area Name : GLENWOOD Latitude : 34.3272 Longitude : -93.5516 ‹ previous : 870-355 next › : 870-356 Telephone Number List 870-356-0000 ~ 870-356-9999