Area code 203 is a significant telecommunications area code serving southwestern Connecticut, including cities like Bridgeport, New Haven, Stamford, and Waterbury. This area code plays a vital role in connecting businesses and residents in the region. The history of area code 203 dates back to its establishment in 1947 as part of the North American Numbering Plan (NANP). Over the yea... https://ippbx.com/blog/area-code-203-a-southwestern-connecticut-area-code-203/