Q: How to look up past apple products

I have had quite a few Apple products. What I'm trying to find out is if there is anyway of looking up these past products serial numbers? Reason being is that I have recently misplaced my iPod Classic and so i'm trying to see if I can get the serial number from it and see if it has been registered to someone else. I don't plan on hunting the person down for it. I just want to know if it is still under my name, it could still be in my house or if it is out somewhere. I don't have the original box for it or the receipt though. Anyway it can be looked up through iTunes?