| 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 |
|---|---|---|---|
| 203-403 | Fairfield | Landline | Active |
| 203-404 | New Haven | Landline | Active |
| 203-405 | Litchfield | Landline | Active |
| 203-406 | Fairfield | Landline | Active |
| 203-407 | New Haven | Landline | Active |
| 203-408 | Fairfield | Landline | Active |
| 203-409 | Fairfield | Landline | Active |
| 203-410 | New Haven | Cell Number | Active |
| 203-412 | New Haven | Cell Number | Active |
| 203-413 | Fairfield | Landline | Active |
| 203-414 | Fairfield | Cell Number | Active |
| 203-415 | New Haven | Cell Number | Active |
| 203-416 | Fairfield | Landline | Active |
| 203-417 | Fairfield | Cell Number | Active |
| 203-418 | Fairfield | Landline | Active |
| 203-419 | New Haven | Landline | Active |
| 203-420 | New Haven | Landline | Active |
| 203-421 | New Haven | Landline | Active |
| 203-422 | Fairfield | Landline | Active |
| 203-423 | Fairfield | Landline | Active |