Caller ID spoofing is a practice of causing a number on the caller ID display to be different from that of the actual call origination point. Spoofing Caller ID information is illegal. If you believe that someone who called you has spoofed their caller ID info. to scam or mislead you, report it to the Federal Communications Commission at 1-888-225-5322 or file a complaint online: consumercomplaints.fcc.gov/hc/en-us