DNS Propagation Checker

Compare a DNS record across several public resolvers to spot caching differences and possible propagation delays.

Results

No propagation check run yet.

What this tool checks

DNS Propagation Checker compares answers from multiple public resolvers so you can see whether a DNS change appears consistent or whether different caches still hold different answers for the same record type.

When to use it

  • Check whether a recent DNS change is visible across common public resolvers.
  • Compare inconsistent answers before assuming the authoritative zone is wrong.
  • Verify whether propagation is the problem or whether the issue is actually record content.

Learn more

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How to Check DNS Propagation

A practical guide to checking DNS propagation, including what to compare, how TTL affects results, and how to interpret inconsistent answers.

What is DNS propagation?

Learn what DNS propagation means, why different resolvers may show different answers, and what to check during a DNS change.

What Is DNS TTL? Time to Live Explained

Learn what DNS TTL means, how DNS caching works, why TTL affects propagation and reliability, and how to choose the right TTL before a DNS change.