is there anyway to find out if iphone is stolen or on the contract before buying

Hi guys I want to buy a new iphone x 2nd hand and before purchase i was wondering if there is anyway to find out if the phone is on contract or stolen. I have the imei number phone number and the serial number. is there a website or do stores like noel leeming let you find this out because there is no 2 degrees store near me. Thank you all very much.