Verizon distributed notices that ten digital dialing will be required in area code 717 to accommodate the new overlay of 223.
Beginning August 26, 2017, if you have a 717 area code, the new calling procedure will be required for all calls. On or after this date, if you don't use the new calling procedure, your call won't be completed and a recording will instruct you to hang up and dial again.
Beginning September 26, 2017, new phone lines or services may be assigned numbers with the 223 area code. If you have a 223 area code, you must enter the area code and 7-digit phone number on all calls or the call won't be completed.
Verizon information at: