Is there a Google DNS issue now?
Google Cloud DNS status is operational.
Should I use 8.8 8.8 DNS?
Though there's no guarantee Google DNS works faster, the answer is likely yes. One user did a speed test and changed their DNS settings. They found that the Google domain name system server set to 8.8. 8.8—Google's first DNS server—was 10.3% faster than the default server.
Why is my DNS not working?
The “DNS Server not Responding” issue may occur simply due to data traffic. It may be that simply restarting your router can fix this issue. You can restart your router by pressing the power button on your router.