This is a number included in a request for vacation housing I own.  It had a slight resemblance to the Nigerian scam, AKA Advanced Fee Fraud, or 4-1-9.  The scammer often sends a check for more than is requested with the plea to send back the remainder. the scam works for the scammer because the check is phony.  By the time, the check is cleared by the sender bank and the receiver bank, the victim often sends the difference and is out the money.