Compare DNS resolver results
A domain can resolve differently depending on the resolver, region, and cache. Comparing several public DNS services side by side is faster than guessing whether you are seeing propagation, filtering, or a local cache problem.
Use this resolver check after a DNS change, when one network can open a site and another cannot, or when you suspect a resolver is rewriting answers. It is a comparison tool, not a court record of censorship.
The domain you enter is queried through public resolvers from this application. NetScope does not keep a log of looked-up names.
How to use this tool
- Enter the domain you want to inspect, without a URL path.
- Run the resolver check and wait for each source.
- Compare addresses and empty answers. A single outlier is often cache; the same block across several resolvers deserves a closer look.
Open DNS resolver
Frequently asked questions
Can this prove that a website is censored?
No. It shows how selected public resolvers answer right now. Confirm with measurements from other networks, such as OONI or a host in the country you care about.
Why do some resolvers return nothing?
The name may not exist, the record may not have propagated, or the resolver may filter the domain. Check the record type and retry after the TTL you expect.
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