I just tried the cloudflare primary/secondary DNS servers 1.1.1.1 and 1.0.0.1 and the Sonos App still works fine here.

The Sonos App also works here with Google’s public DNS servers too… 8.8.8.8/8.8.4.4

Ill try google see what happens .

Thanks

Perhaps see this link too…

https://visualpcs.com/spectrum-dns-server-not-responding/

I’ve been using Cloudflare DNS (1.1.1.1, 1.0.0.1) for a few years without causing any Sonos issues. 

But changing the DNS in the router might sometimes require a router reboot - have you tried doing that since changing the DNS?

Hi,

   I did Gibson Research to check the fastest DNS in my area and Level 3 popped up .I added and it works. Cloudflare still breaks it. 

  Ill keep the forum updated with google soon.

Thx

A skin care advert to solve DNS issues? 

I also have not had any issues with Cloudflare DNS, I use 1.1.1.2 for added malware protection.

Your knowledge level may be way above this but just checking - you didn’t add an extra period after the end of the DNS address, and/or (depending on how the DNS is entered in the router backend) no spaces if also including a secondary DNS - i.e. 1.1.1.1,1.0.0.1 

Got to love those <insert keyword here> articles 

I bet they provide a very similar looking page for a range of isp/dns combinations. Or Spectrum are searched so often they just focus on them. Was so tempting to click the article titled “Is spectrum.net real: unveiling the truth” at the bottom of the page

The cookie list is um.. interesting. They also have a different meaning of legitimate interest than I do 

Store and/or access information on a device ( 710 partners included )

…
Use precise geolocation data ( 537 partners included )

I just see the space in between spaces myself - guess my blockers hide a good many things that I don’t wish to see. Sorry though if the ads on that site got in the way. 

Amazing…Google DNS Works on my Win 11 rig with Sonos app but not on my Iphone …… reboot of iphone fixed it. However Cloudflare still wont work . Ill close this up now. 

Thanks for all your input 

Yes, changing DNS settings can sometimes impact app and system functionality. Cloudflare's DNS might have different settings or restrictions compared to Spectrum's, which could affect how your app connects or functions. You might want to check the app's network requirements or try reverting to the previous DNS settings to see if that resolves the issue. If the problem persists, consider reaching out to the app’s support for specific guidance.

Hope this helps!