A method includes identifying one or more second digital subscriber lines from one or more first digital subscriber lines based on historical performance data. The one or more second digital subscriber lines are identified based on degraded performance that is determined using first performance information for the one or more first digital subscriber lines. The method includes applying a line profile to the one or more second digital subscriber lines. The method includes storing second performance information associated with the one or more second digital subscriber lines. The method includes sending information to a remote computing device.