| 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 |
|---|---|---|---|
| 203-343 | New Haven | Cell Number | Active |
| 203-344 | Fairfield | Landline | Active |
| 203-345 | Fairfield | Landline | Active |
| 203-346 | New Haven | Landline | Active |
| 203-347 | Fairfield | Landline | Active |
| 203-348 | Fairfield | Landline | Active |
| 203-349 | Fairfield | Landline | Active |
| 203-350 | New Haven | Landline | Active |
| 203-351 | Fairfield | Landline | Active |
| 203-352 | Fairfield | Landline | Active |
| 203-353 | Fairfield | Landline | Active |
| 203-354 | Fairfield | Landline | Active |
| 203-355 | Fairfield | Landline | Active |
| 203-356 | Fairfield | Landline | Active |
| 203-357 | Fairfield | Landline | Active |
| 203-358 | Fairfield | Landline | Active |
| 203-359 | Fairfield | Landline | Active |
| 203-360 | Fairfield | Cell Number | Active |
| 203-361 | New Haven | Landline | Active |
| 203-362 | Fairfield | Landline | Active |