Global DNS Propagation Checker
Check real-time global DNS record propagation across major public resolvers worldwide (Google, Cloudflare, Quad9, OpenDNS, AdGuard, CleanBrowsing, and Comodo).
What Causes DNS Propagation Delays?
When you update a DNS record or change domain nameservers at your domain registrar, changes do not update instantaneously across the internet due to caching mechanisms across intermediate recursive DNS resolvers.
Factors Influencing Propagation Speeds
- Time-to-Live (TTL): The TTL value (in seconds) dictates how long resolvers cache record responses before requesting fresh data from authoritative nameservers.
- Registrar NS Delegations: Changing TLD root server NS delegations can take 24 to 48 hours to complete.
- ISP Caching: Some Internet Service Providers ignore low TTL values and enforce minimum caching intervals.