CC number verification method

[dimon1]

Hey you guys I use to have a merchant number for chase bank. I would simply generate cc numbers and check them for approvals using that chase merchant number. Well a lil while back that number became invalid and so now since then i havent been able to check any of my cc numbers for approvals, can anyone help out with a new merchant number for chase or maybe a new method for checking for approvals that I dont know about? thanks