[al2o3cr]

Also - switching to ISP DNS is a non-starter if you're stuck with a provider that thinks DNS hijacking is totes OK:

https://en.wikipedia.org/wiki/DNS_hijacking#Manipulation_by_...

The best part of TWC's surely-you-wanted-these-ads-instead-of-an-NXDOMAIN system? The servers they use are laggy and unreliable!