Don't know of anything online, but I would suggest the prodution list books published by The Aviation Hobby Shop in England. There are several volumes:
Jet Airliner Production List Vol 1 - Boeing
Jet Airliner Production List Vol 2 - Other Manufacturers
Turbo Prop Airliner Production List
and if you are interested in the real old guys....
Piston Engine Airliner Production List
With these books you can track the entire history of an airliner. You look up the reg # and it refers you to the construction number of that plane. Then look up the plane by c/n. It will list the entire history of the plane from the date it was delivered. It show dates planes changed owners, were leased out, and reg # changes. For anyone interested in the history of individual airliners, these books are a must.