My ISP area or something has been banned for 2 years

This may sound odd, but it's worth a try. Try assigning your DNS server to one of the national servers. There was a time about 6 years ago where I had this problem at my office. I got through it by doing DNS on a level above my office network.

Here is a place that has a list of open public DNS servers - http://portforward.com/networking/dns.htm