| 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 |
|---|---|---|---|
| 203-566 | Fairfield | Landline | Active |
| 203-567 | Fairfield | Landline | Active |
| 203-568 | New Haven | Landline | Active |
| 203-569 | Fairfield | Landline | Active |
| 203-570 | Fairfield | Cell Number | Active |
| 203-571 | Fairfield | Landline | Active |
| 203-572 | Fairfield | Cell Number | Active |
| 203-573 | New Haven | Landline | Active |
| 203-574 | New Haven | Landline | Active |
| 203-575 | New Haven | Landline | Active |
| 203-576 | Fairfield | Landline | Active |
| 203-577 | New Haven | Landline | Active |
| 203-578 | New Haven | Landline | Active |
| 203-579 | Fairfield | Landline | Active |
| 203-580 | Fairfield | Landline | Active |
| 203-581 | Fairfield | Landline | Active |
| 203-582 | New Haven | Landline | Active |
| 203-583 | Fairfield | Landline | Active |
| 203-584 | New Haven | Cell Number | Active |
| 203-585 | Fairfield | Landline | Active |