A system may include a failed route avoidance device. The failed route avoidance device may receive a notification that a record, of a call that failed to be extended to a contact agent in a customer network, is inserted into a failed call list; determine whether an identifier for the contact agent associated with the call is to be placed in an avoidance list based on a response code that a network element sends, to a call router that received the call, when the a connection from the call at the call router to the contact agent fails to be established; generate an avoidance record when the failed route avoidance device determines that the identifier for the contact agent is to be placed in the avoidance list; and send the avoidance record to a configuration device that inserts the avoidance record into the avoidance list.