Area Code 240

All Information about Area Code 240
General Information about Area Code 240
Country United States
State / Province / Territory Maryland
Major City Gaithersburg
Time Zone Eastern (UTC-05:00)

Active Prefixes in Area Code 240

Prefix Primary City County Phone Type
240-477 Gaithersburg Montgomery Landline
240-640 Waldorf Charles Wireless
240-740 - - -
240-215 Frederick Frederick Landline
240-491 Silver Spring Montgomery Landline
240-498 Laurel Prince Georges Wireless
240-607 Cheltenham Prince Georges Landline
240-413 Brentwood Prince Georges Wireless
240-509 Gambrills Anne Arundel Landline
240-423 Silver Spring Montgomery Wireless
240-263 Chevy Chase Montgomery Wireless
240-644 Bethesda Montgomery Landline
240-335 Bowie Prince Georges Landline
240-249 Charlotte Hall Saint Marys Landline
240-535 Silver Spring Montgomery Wireless
240-468 Brentwood Prince Georges Wireless
240-299 Waldorf Charles Wireless
240-750 Gaithersburg Montgomery Wireless
240-406 Rockville Montgomery Wireless
240-670 Brentwood Prince Georges Landline
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