According to North American Numbering Plan, 203954 located in DERBY, Connecticut. the first three digits 203 locate to state Connecticut, 954 locate the city DERBY, furthermore, we also provide some other information such as the zip code example(s) 06418, 06401, 06484, carrier CHOICE ONE COMMUNICATIONS, INC, and the latitude and longitude is 41.3242 -73.0881. Please pay attention that the detail we provide only as a reference, the details of the zip code may be not complete, the latitude and longitude likely to have deviation.

Here are some random corresponding phone numbers.