I got three calls like this today, one of which included this number. THREE! The other two numbers were 773-728-8019 and 603-875-6285. I just got my new phone two weeks ago!
Easier if all who received cell calls contact the local police. Each offence carries an up to $11,000 fine ~ by the look of today's trail enough to put him out of business.
If enough people call the local force to report a breach of federal law I believe the police will be obliged to act.