I dont know of any other Bank which allows this. I used to download the software Citibank would give you and it would automatically update the webpage with the card number but I have removed it since it interferes with some other controls in my laptop. However, I can still generate a number using the Citi website. As you said very useful and is the best for internet purchases. I started using this after one of my credit card numbers was used in Ireland for some purchases and I have never been to Ireland. So I have minimized/stopped giving my full credit card number to websites

I use Citibanks virtual numbers which lets me give a virtual number and then fix the amount to that number and time limit. I usually choose the exact amount as the limit and time limit of 2 months. This way no merchant can force me to use automatic payments. I have noticed that in Skype it automatically selects automatic payments for you and you need to be careful to make sure it does not get selected. If you go to the next screen and then come back it gets selected again. So you have to be careful