Area Code 240-345 located in SANDY SPRING, MONTGOMERY, MD, more detail is as below. Place NPA (Numbering Plan Area) : 240 NXX (Local Number Prefix) : 345 City : SANDY SPRING County : MONTGOMERY State : MD (Maryland) NXX Use Type : Landline NXX Intro Version : 3/9/2006 FIPS (Federal Information Processing Standards) : 24031 LATA (Local Access Transport Area) : 238 Rate Center : ASHTON238 ZIP Code Count : 0 ZIP Code Frequency : Most frequently occurring ZIP Code, although percentage is unknown. ZIP Code : 20860 Other Information NPANXX : 240345 County Population : 0 Switch CLLI (Common Language Location Identifier) : PIVLMDPKDSZ MSA CBSA (Core Based Statistical Area) : Washington-Arlington-Alexandria, DC-VA-MD-WV MSA CBSA Code (Core Based Statistical Area) : 47900 Time Zone : Eastern (GMT -05:00) Observes Daylight Saving Time : Yes Overlay : L Company : LEVEL 3 COMMUNICATIONS, LLC - MD OCN (Operating Company Number) : 6119 Coverage Area Name : SANDY SPRING Latitude : 39.1521 Longitude : -77.0225 ‹ previous : 240-344 next › : 240-346 Telephone Number List 240-345-0000 ~ 240-345-9999