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