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Check how DNS changes propagate across global resolvers in real-time. Verify A, AAAA, MX, TXT, NS, and CNAME records across multiple geographic locations.
DNS propagation is the time it takes for DNS changes to spread across all DNS resolvers on the Internet. When you update a DNS record — change an IP address, add a new mail server, or modify a TXT record — the change must be cached by DNS resolvers worldwide before all users see the updated information. Propagation time depends on TTL settings, resolver cache policies, and geographic distribution of name servers. This tool queries multiple global resolvers to show you exactly where your changes have propagated and where old records still persist.
Knowing propagation status prevents premature troubleshooting of "broken" websites that are simply still cached. It helps validate DNS migrations, cutover timing, and global consistency after changes.
Checking only one resolver (like your ISP), not lowering TTL before planned changes, panicking when some resolvers show old data, and not understanding that propagation is eventual, not instantaneous.
Type the domain to check propagation for.
We query DNS resolvers across multiple regions and providers.
Each resolver's response is compared against expected records.
See which resolvers have propagated and which still cache old data.
Queries DNS resolvers across North America, Europe, Asia, South America, and Oceania. See how your records appear to users in different geographic regions.
Checks propagation for A, AAAA, MX, TXT, NS, and CNAME records. Different record types may propagate at different rates depending on TTL values.
Shows individual results per resolver with IP address, location, response time, and whether the response matches the expected record. Pinpoint problematic resolvers.
Calculates the overall propagation percentage across all queried resolvers. A clear metric for determining when a DNS cutover is safe to execute.
No cached results — every query hits live resolvers in real-time. Get the current propagation status, not a snapshot from hours ago.
Shows TTL values returned by each resolver. Helps diagnose why some resolvers still return old records — their cache simply hasn't expired yet.
Automate propagation checks, track DNS change rollout across global resolvers, detect stale cache issues, and get alerted when propagation is incomplete.