| Area Code 240 Details | |
|---|---|
| Country | United States |
| State/Province | Maryland |
| Major City | Baltimore |
| Time Zone | Eastern |
| Prefix | County | Phone Type | Status |
|---|---|---|---|
| 240-332 | Charles | Landline | Active |
| 240-333 | Prince Georges | Landline | Active |
| 240-334 | Prince Georges | Landline | Active |
| 240-335 | Prince Georges | Landline | Active |
| 240-336 | Montgomery | Landline | Active |
| 240-337 | Prince Georges | Landline | Active |
| 240-338 | Montgomery | Cell Number | Active |
| 240-339 | Prince Georges | Landline | Active |
| 240-340 | Montgomery | Cell Number | Active |
| 240-341 | Frederick | Landline | Active |
| 240-342 | Montgomery | Landline | Active |
| 240-343 | Washington | Cell Number | Active |
| 240-344 | Frederick | Cell Number | Active |
| 240-345 | Montgomery | Landline | Active |
| 240-346 | Charles | Cell Number | Active |
| 240-347 | Washington | Landline | Active |
| 240-348 | Prince Georges | Landline | Active |
| 240-349 | Charles | Landline | Active |
| 240-350 | Prince Georges | Cell Number | Active |
| 240-351 | Prince Georges | Cell Number | Active |