Area Code 318-646 located in MONTGOMERY, GRANT, LA, more detail is as below. Place NPA (Numbering Plan Area) : 318 NXX (Local Number Prefix) : 646 City : MONTGOMERY County : GRANT State : LA (Louisiana) NXX Use Type : Landline NXX Intro Version : 1994-02-04 FIPS (Federal Information Processing Standards) : 22043 LATA (Local Access Transport Area) : 486 Rate Center : MONTGOMERY ZIP Code Count : 1083 ZIP Code Frequency : 84 ZIP Code : 71454 Other Information NPANXX : 318646 County Population : 0 Switch CLLI (Common Language Location Identifier) : MTGMLAMARS1 MSA CBSA (Core Based Statistical Area) : Alexandria, LA MSA CBSA Code (Core Based Statistical Area) : 10780 Time Zone : Central (GMT -06:00) Observes Daylight Saving Time : Yes Company : BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL OCN (Operating Company Number) : 9419 Coverage Area Name : MONTGOMERY Latitude : 31.6868 Longitude : -92.8876 ‹ previous : 318-646 next › : 318-647 Telephone Number List 318-646-0000 ~ 318-646-9999