| Area Code 240 Details | |
|---|---|
| Country | United States |
| State/Province | Maryland |
| Major City | Baltimore |
| Time Zone | Eastern |
| Prefix | County | Phone Type | Status |
|---|---|---|---|
| 240-839 | Montgomery | Cell Number | Active |
| 240-841 | Prince Georges | Landline | Active |
| 240-842 | Prince Georges | Landline | Active |
| 240-843 | Prince Georges | Landline | Active |
| 240-844 | Saint Marys | Landline | Active |
| 240-845 | Montgomery | Landline | Active |
| 240-846 | Prince Georges | Landline | Active |
| 240-848 | Montgomery | Cell Number | Active |
| 240-855 | Montgomery | Cell Number | Active |
| 240-857 | Prince Georges | Landline | Active |
| 240-863 | Prince Georges | Landline | Active |
| 240-864 | Montgomery | Landline | Active |
| 240-865 | Anne Arundel | Landline | Active |
| 240-868 | Prince Georges | Landline | Active |
| 240-876 | Montgomery | Cell Number | Active |
| 240-880 | Montgomery | Landline | Active |
| 240-882 | Prince Georges | Cell Number | Active |
| 240-883 | Montgomery | Landline | Active |
| 240-888 | Montgomery | Cell Number | Active |
| 240-892 | Prince Georges | Landline | Active |