DNS Propagation Checker

Compare DNS answers across major resolvers to verify propagation state
This free online dns propagation checker runs in your browser and is part of our Developer Tools collection.

DNS Propagation Checker

Compare DNS answers across multiple resolvers to spot propagation delays.

What this helps with

  • See whether a DNS change has reached major resolvers yet
  • Compare answer and TTL differences by resolver
  • Validate rollout progress during migrations
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Instant In-Browser Execution Runs locally in JavaScript without wait times or server delays.
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100% Privacy & Security Your inputs and files are never stored or logged on remote servers.
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Cross-Device Responsive Fully optimized for mobile smartphones, tablets, and desktop displays.
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100% Free Forever No subscription fees, no signups, and no software installations.

How to Use the Online DNS Propagation Checker

1 Enter Domain Name

Type your domain name (e.g. `example.com`).

2 Select Record Type (A, MX, CNAME, TXT)

Choose which DNS record to check across global resolvers.

3 Query Worldwide Public Resolvers

Click "Check Propagation" to simultaneously query Google DNS, Cloudflare, Quad9, OpenDNS, Level3, and regional telecommunications resolvers worldwide.

4 Inspect Propagation Consensus

Review the geographic status table and map showing whether resolvers return the updated IP address or old cached records.

Frequently Asked Questions

Common questions about using this free online dns propagation checker.

Why does DNS propagation take time across different countries? ▾
When you update DNS records at your registrar, worldwide recursive resolvers continue serving the old cached data until the previous record's Time-To-Live (TTL) expires. Different ISPs refresh their caches at varying intervals.
How can I speed up DNS propagation when migrating servers? ▾
Lower your DNS record TTL to 300 seconds (5 minutes) at least 24 to 48 hours BEFORE migrating servers. Once the migration is complete, raise the TTL back to standard values (e.g. 86400 seconds).
What public DNS resolvers are tested in this tool? ▾
The tool queries major global anycast networks: Google Public DNS (`8.8.8.8`), Cloudflare (`1.1.1.1`), Quad9 (`9.9.9.9`), OpenDNS/Cisco (`208.67.222.222`), and regional nodes in North America, Europe, and Asia.
What does a green checkmark mean in the results? ▾
A green checkmark indicates the resolver has successfully picked up and returned the latest active DNS record.

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