| Area Code 203 Details | |
|---|---|
| Country | United States |
| State/Province | Connecticut |
| Major City | New Haven |
| Time Zone | Eastern (UTC-05:00) |
| Prefix | County | Phone Type | Status |
|---|---|---|---|
| 203-444 | New Haven | Cell Number | Active |
| 203-445 | Fairfield | Landline | Active |
| 203-446 | New Haven | Landline | Active |
| 203-447 | Fairfield | Landline | Active |
| 203-448 | Fairfield | Landline | Active |
| 203-449 | Fairfield | Cell Number | Active |
| 203-450 | Fairfield | Cell Number | Active |
| 203-451 | Fairfield | Landline | Active |
| 203-452 | Fairfield | Landline | Active |
| 203-453 | New Haven | Landline | Active |
| 203-454 | Fairfield | Landline | Active |
| 203-455 | Fairfield | Landline | Active |
| 203-456 | Fairfield | Cell Number | Active |
| 203-457 | New Haven | Landline | Active |
| 203-458 | New Haven | Landline | Active |
| 203-459 | Fairfield | Landline | Active |
| 203-460 | Fairfield | Landline | Active |
| 203-461 | Fairfield | Landline | Active |
| 203-462 | Fairfield | Landline | Active |
| 203-463 | New Haven | Landline | Active |