Problem with Three DNS settings

[Fireyorks]

Anyone having problems with Three DNS server.

Am randomly receiving 

“Safari can't open the page because the server can't be found.”

Happening all the time on every website I visit.

When I change the DNS settings on the device or router to use say Cloudflare 1.1.1.1 works perfectly.

why would the Three DNS randomly stop working after working perfectly for 2 years, only started over last 3 days.

[JonathanB]

Hi @Fireyorks,

Are you still encountering any issues like this? Were you able to check if this was specific to Safari as @Geluk suggested?

Thanks,
Jonathan

[Fireyorks]

Tried a different browser, just the same.

only fix was to use a different DNS, worked perfect on Cloudflare on 1.1.1.1

Also tried Google, worked fine on that as well

[JonathanB]

Very strange, it doesn't seem like it's a universal issue, as I'm sure we'd see more posts and topics if no one could access any sites without changing DNS. I don't think most people would have thought to try this. There's a few other things which may be worth checking here:

• Are you replicating the same problem on multiple devices, or one specific laptop/PC? 
• Does it make a difference if you're using a wired or Wi-Fi connection to the router?
• If it seems to be just one device I'd troubleshoot from that perspective, check you've got up to date drivers and any other recommended software updates from the manufacturer.
• If all devices and issue is pointing towards the router, does a factory reset restore normal service?

Thanks,
Jonathan

[Geluk]

Try a different browser.