A FedEx door tag number is a unique identifier assigned to a package that has been delivered or attempted to be delivered by FedEx. It serves as a record of the delivery attempt and contains information such as the date and time of the attempt, the name of the recipient, and the tracking number of the package. For example, if a FedEx delivery driver attempts to deliver a package to a residence but the recipient is not home, they will leave a door tag with a door tag number on the door.
Door tag numbers are important because they provide recipients with a way to track the status of their package and arrange for redelivery if necessary. They also help to reduce the risk of package theft, as the recipient has a record of when the delivery attempt was made and who attempted it.