Frequently asked questions
How long does DNS propagation take?
Usually minutes, sometimes up to the old record TTL (often 1 to 24 hours). Lower the TTL before a planned change.
Is this a worldwide propagation checker?
No. It compares two big public resolvers. That catches most real problems but is not a map of every country.
Why do A records differ between resolvers?
Load-balanced or geo-aware DNS returns different IPs by location. A mismatch is not always an error.
What is a CAA record?
It lists which certificate authorities may issue SSL certificates for your domain. It is optional but recommended.