Every once in a while (it doesn’t happen very often) DNS servers would stop resolving certain domains causing intermittent issues when accessing the Internet. To solve the DNS issues, I often switch DNS servers on my main router. Changing DNS servers may require rebooting your router.
So, here’s a list of DNS servers you could use on your router, in case the current DNS servers you are using is having problems. I primarily use OpenDNS and Google DNS servers, but others DNS servers are reliable as well.
184.108.40.206 Primary 220.127.116.11 Secondary
18.104.22.168 Primary 22.214.171.124 Secondary
126.96.36.199 Primary 188.8.131.52 Secondary
184.108.40.206 Primary 220.127.116.11 Secondary
18.104.22.168 Primary 22.214.171.124 Secondary
126.96.36.199 Primary 188.8.131.52 Secondary
184.108.40.206 Primary 220.127.116.11 Secondary