Troubleshooting | Blog | DNSAdBlocker

DNS troubleshooting flow from client connection through resolver selection to filtering results.

Troubleshooting2026/10/19

DNS Ad Blocker Not Blocking Ads? Follow the Request Path

Find why ads still appear by checking one device, its active DNS resolver, dashboard counters, cached answers, and the limits of domain-based filtering.

Diagram comparing IPv4 and IPv6 resolver paths and a separate AAAA address response.

Troubleshooting2026/10/19

IPv6 and DNS Ad Blocking: Check Which Resolver Your Device Uses

Separate IPv6 DNS transport from AAAA answers, inspect the resolvers your network advertises, and trace filtering without disabling IPv6 as a general fix.

Recovery diagram restoring a client to its previous DNS settings before checking the local filtering device.

Troubleshooting2026/10/19

No Internet After Changing DNS? Restore Access First

Restore one device to its previous DNS settings, separate lookup failures from connection problems, and check the local filter before applying DNS again.

Diagram of a browser sending encrypted DNS to a remote resolver while other requests use a local filter.

Troubleshooting2026/10/19

Is Secure DNS Bypassing Your Local Ad Blocker?

Check whether browser Secure DNS, Android Private DNS, or a VPN uses a separate resolver, then compare privacy and local filtering before changing settings.

Diagram of a website dependency being checked with filtering active and temporarily paused.

Troubleshooting2026/10/19

A Website Stopped Working After DNS Blocking: Find the Cause

Find whether a broken website is caused by DNS filtering, identify the failing dependency, and recover access without assuming a general allowlist exists.