[UnoriginalGuy]

How would you suggest we get a list of every domain name currently registered? And how would you suggest we identify blocked domains as opposed to redirected, offline, or similar? And how do you recommend we pay for the billions of comput' hour such a task would take?

So in other words: It isn't feasible.

[brador]

Don't be so negative. You can get the master .com domain list from Verizon as a download. Identify blocked domains by the holding page and header info. I'm guessing they do something like the guys here with a big page saying seized.