What state and major city are associated with area code 983, and how does it relate to the larger telecommunications system in Colorado?

In fact, the 983 area code does not apply to Colorado and is not used in the United States. You may have misspelled the code. In Colorado, the primary area code is 303, which covers major cities, including Denver. To find information about phone numbers or other area codes, you can use the searqle service. Area codes in the United States are regulated by the Federal Communications Commission, and each state or city is assigned a unique code to simplify the telephone network.