FCC Fines Robocallers for Caller ID Spoofing
You've likely received a call from a 406 number (sometimes one that's really close to your own number to compel you to answer) only to find out that it was some telemarketing call. Perhaps you have also been on the other end where your number was used as one of these fake caller id's and someone calls you saying "Someone keeps calling me from this number." Either way, it sucks and it should be stopped.