Porting an Existing Number to Verizon
When Add a Line asks for the number source, choose Port Existing Number. The form requests the number being ported, the losing carrier's account number, the account PIN or transfer password, the billing address on file, and the account holder's name. My Verizon Business submits the port request to the losing carrier through the NPAC (Number Portability Administration Center) database. Wireless-to-wireless ports typically complete in 1 business day; ports from landline providers or VoIP services can take 3-5 business days.
During the port window, the old line remains active. The employee can make and receive calls normally. When the port completes, service cuts over to Verizon within a few hours, and the old carrier auto-cancels the losing account. Port rejections occur when the account info doesn't match — typos in the account number or wrong PIN are the most common causes. Verizon returns the rejection code and guidance for resubmission.

