I closed my Dish account, and I kept my 510 receiver that Dish originally gave me. Now I don't have any use for that receiver, and I am trying to sell it on Ebay. Some potential buyers keep asking me for R00 and S00 numbers off the receiver. They say they need those numbers to find out if there is any balance and if they will be able to activate the receiver once they buy it from me. Could somebody please tell me if it is safe to give those numbers away?