According to North American Numbering Plan, 203303 located in WALLINGFORD, Connecticut. the first three digits 203 locate to state Connecticut, 303 locate the city WALLINGFORD, furthermore, we also provide some other information such as the zip code example(s) 06492, carrier TELEPORT COMMUNICATIONS AMERIC, and the latitude and longitude is 41.4539 -72.8137. 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.