Use the Area Code Updating program to keep area codes current in the system.
If, for example, in Colorado, Denver and Colorado Springs share the same area code, and the state assigns a new area code to the Colorado Springs region, you can use this program to change the area code for all of the affected telephone numbers at once.
When you update area codes, select whether to change the area codes for entities (customer or vendor businesses) or contacts (customer or vendor personnel within individual companies). Then specify all the exchanges within the old area code that need to be updated to the new area code. The exchange is the middle part of the phone number. For the phone number 720-555-8742, 555 is the exchange.
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