You could try this ;
Granite Canyon - Public DNS
Their DNS servers ns1.granitecanyon.com and ns2. translate to 205.166.226.38 and 69.67.108.10 respectively.
Can't say I've used it but it seems to test out OK by forcing DHCP to use those addresses for DNS vs. my ISP - TCP/IP properties in Control Panel for your Internet connection if running Windows. A little slower perhaps.
I feel sure someone will have a better/alternative solution.