| Area Code 240 Details | |
|---|---|
| Country | United States |
| State/Province | Maryland |
| Major City | Baltimore |
| Time Zone | Eastern |
| Prefix | County | Phone Type | Status |
|---|---|---|---|
| 240-289 | Prince Georges | Landline | Active |
| 240-290 | Prince Georges | Landline | Active |
| 240-291 | Washington | Cell Number | Active |
| 240-292 | Montgomery | Landline | Active |
| 240-293 | Prince Georges | Landline | Active |
| 240-294 | Prince Georges | Landline | Active |
| 240-295 | Prince Georges | Landline | Active |
| 240-296 | Prince Georges | Landline | Active |
| 240-297 | Prince Georges | Landline | Active |
| 240-298 | Saint Marys | Cell Number | Active |
| 240-299 | Charles | Cell Number | Active |
| 240-300 | Charles | Cell Number | Active |
| 240-303 | Prince Georges | Landline | Active |
| 240-304 | Prince Georges | Cell Number | Active |
| 240-305 | Prince Georges | Cell Number | Active |
| 240-306 | Montgomery | Landline | Active |
| 240-307 | Frederick | Landline | Active |
| 240-308 | Montgomery | Cell Number | Active |
| 240-309 | Saint Marys | Cell Number | Active |
| 240-310 | Washington | Cell Number | Active |