(Aug 24, 2015)
To register for the Pennsylvania and national do-not-call lists, visit Pennsylvania's Do-Not-Call list or call 1-888-777-3406. Registration is free. There is a rolling enrollment; individuals may sign up at any time and the registration is good for five years. After that, you can re-enroll. And, signing up on Pennsylvania's list automatically adds those numbers to the national do-not-call list.