Verizon and NXDOMAIN
I recently signed up for Verizon FiOS and the TOS specifiy that they do NXDOMAIN redirection.
And they also say that you can opt-out !
I'm not actually on this yet (next week) so I don't know what the opt-out process is. But at least there is one.
Of course, you have to actually read the TOS documents to find this out. And in a small, non-resizable browser window that is very painful. Even more so since the ordering process times out if you take too long. It took me three cycles before I could actually complete an order. They helpfully say that they will send you a copy but of course you have to agree first. That's only a 98% Catch-22 because they do have a 15-day no-penalty cancellation policy.