ResolverIP / Record Data
TTLStatus
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Results will appear from Google, Cloudflare, DNS.SB and AliDNS
Instantly check whether your DNS changes have taken effect. Each check asks four public DNS resolvers — Google, Cloudflare, DNS.SB and AliDNS — live, and shows you each answer side by side.
How this works: your browser sends the lookup straight to four public DNS resolvers — Google, Cloudflare, DNS.SB and AliDNS — over encrypted DNS-over-HTTPS, all at the same time, and we show each one's answer. They're large networks with servers worldwide; we don't query from specific cities or ISPs. Nothing you type is sent to or stored by DNSChecker.ca.
DNS propagation is the time it takes for DNS changes to spread across all DNS servers worldwide. When you update your domain records, those changes don't appear instantly everywhere.
Typically 24–72 hours, though many changes propagate within minutes. Your TTL value controls how long old records are cached.
Some DNS resolvers are still caching your old record. They'll update once the TTL (time to live) expires. To compare several public resolvers at once, use our DNS Propagation Checker.
100% free. No account needed. Check unlimited domains anytime.
Each check queries four public resolvers live — Google Public DNS, Cloudflare, DNS.SB and AliDNS (Alibaba) — over DNS-over-HTTPS, and shows exactly what each one returns right now. If they disagree, some are still serving a cached copy of the old record until its TTL runs out. Your own ISP's resolver isn't one of the four, so your network can still show an older answer for a while.