When you do an ipconfig /all, do you see more than one nameserver? If so, you can see if all their nameservers are messed up.
Let's say their nameservers are
207.69.188.185
207.69.188.186
207.69.188.187
To try a specific one, do
nslookup
server 207.69.188.187
www.sfwmd.gov
‘Tis odd for RR to screw up (I’ve got it here).. The last major problem was when one of the major backbone companies refused to deal with RR for a while.
I get DNS timeouts on both nameservers.