An updated map of area codes in Illinois that will be in effect as of March 29, 2021. Reporter An updated map of area codes in Illinois that will be in effect as of March 29, 2021. CHAMPAIGN — ...
SPRINGFIELD, Ill. (WAND) - A new area code will be implemented for the 217 region. The 447 prefixes will start after March 29, 2021. The Illinois Commerce Commission announced the news on Monday. The ...
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