Beginning April 24 Kansas residents with area codes 620 and 785 will be asked to dial the complete 10 digit phone number to make a call. The 10 digit number will be required to make any phone calls that previously could be dialed with seven digits. Residents are encouraged to begin dialing the 10 numbers starting April 24, however, calls will still go through with seven digits until Oct, 24 at which time the area code for local calls will be mandatory. After Oct. 24, 2021 callers who do not dial the 10 digit number will not be able to complete the call.
Source: KSNT News