Test DNS across 8 global resolvers — Google, Cloudflare, Quad9 & more — instant results.
100% free · No login · 8 global resolvers queried simultaneously
Every time you update DNS records — change nameservers, update an A record, add a new CNAME — the change must spread across every public DNS resolver on the internet. Because resolvers cache records according to the TTL (Time To Live) value, some resolvers may serve the old IP for hours after your change goes live at the authoritative nameserver.
NameHub's DNS Propagation Checker simultaneously queries 8 major public DNS resolvers and shows you which are returning the new values and which are still caching the old ones. Share checks with /tools/propagation.php?domain=example.com.
When you update DNS records (change nameservers, update A records, etc.), the change must spread across all public DNS resolvers worldwide. This process — DNS propagation — can take up to 48 hours depending on the TTL setting.
The tool queries 8 public resolvers: Google (8.8.8.8), Cloudflare (1.1.1.1), Quad9 (9.9.9.9), OpenDNS (208.67.222.222), and 4 regional resolvers across North America, Europe, and Asia-Pacific.
The tool shows a "Fully Propagated" badge when all 8 resolvers return the same IP. If resolvers disagree, propagation is still in progress.
Most DNS changes propagate within 1–2 hours for resolvers that honour low TTLs. Full global propagation for high-TTL records can take up to 48 hours. Use this tool to monitor progress in real time.