I contacted my ISP and they seem to have some problems.
It's a regional DNS issue which should be affecting more than just leaserig.
You can make a hosts file on your miners/LRP rigs if you are having an issue.
C:\Windows\System32\drivers\etc\hosts
/etc/hosts
23.236.58.114 leaserig.net rigs.leaserig.net www.leaserig.net
It seems to be working now.
IMHO, adding that line to the hosts file would affect only website problem in case DNS servers are down. I don't think this was the case, because LRP couldn't connect directly to the IP 23.236.58.114.