DNS Propagation Checker
See at a glance which DNS providers already return your new records and which still serve the old answer.
Inspect DNS propagation of a record
The same question goes to 12 public resolvers run by different companies in 7 countries, and their answers, TTLs and response times are grouped so disagreements stand out.
Interpret the result
If some resolvers still show the old value, wait for the old record's TTL to expire; if none show the new one, check the change at your DNS provider.
Prioritize fixes
Resolvers are anycast, so this compares providers rather than cities, and sites that load-balance may legitimately return different addresses.
How to interpret DNS propagation of a record
The same question goes to 12 public resolvers run by different companies in 7 countries, and their answers, TTLs and response times are grouped so disagreements stand out.
Limits of this check
Resolvers are anycast, so this compares providers rather than cities, and sites that load-balance may legitimately return different addresses.
Frequently asked questions
What does this tool check?
The same question goes to 12 public resolvers run by different companies in 7 countries, and their answers, TTLs and response times are grouped so disagreements stand out.
How should I use the result?
If some resolvers still show the old value, wait for the old record's TTL to expire; if none show the new one, check the change at your DNS provider.
What are the limits?
Resolvers are anycast, so this compares providers rather than cities, and sites that load-balance may legitimately return different addresses.
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