DNS Propagation Checker

Ask the same question of ten large public DNS resolvers run by different operators and see their answers side by side, so you can tell which ones have picked up your change and which still serve a cached value. These resolvers are anycast networks: each answer comes from the operator's node nearest to our server.

Open DNS Propagation Checker

Where to find it

Every address below opens the same tool. The first address is the one to bookmark and share.

People also call this

What it's for: Check whether a DNS change has propagated by asking ten public resolvers (Google, Cloudflare, Quad9, OpenDNS and more) and comparing their answers. Instant.

What trips people up: Why do some resolvers still show the old IP? Those resolvers cached the previous answer and will keep serving it until that cache entry expires.

Use it from code

curl -X POST https://openvibe.tools/api/v1/tools/dnspropagation/run \
  -H 'Content-Type: application/json' \
  -d '{"input":{"target":"example.com"}}'

Inputs: JSON Schema · OpenAPI · from JavaScript: tools.run("dnspropagation", …) in openvibe-sdk · How the API works

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