DNS Propagation Checker

DNS propagation is the time it takes for DNS record changes to be updated across all DNS servers worldwide. When you update a DNS record (like changing your web server IP), the change doesn't happen instantly everywhere — it spreads gradually as each DNS resolver refreshes its cache.

This tool queries multiple public DNS resolvers from different geographic locations to help you determine whether your DNS changes have propagated globally. Each resolver is queried directly via DNS-over-HTTPS (DoH), giving you accurate, real-time propagation status.

Because every resolver keeps its own cache, the answer you get depends on which resolver on the internet is asked. By querying several independent resolvers at once, this tool reveals whether your new record is already visible everywhere or only on some providers, which is the practical definition of propagation being "complete".

Key properties

• 10 resolvers — worldwide DoH resolvers across the US, Switzerland, Germany, Czechia, and Cyprus.
• Seven record types — A, AAAA, CNAME, MX, NS, TXT, and SOA.
• Response times — each resolver reports how long its lookup took in milliseconds.
• Propagation verdict — fully propagated, partial, or not checking based on whether answers match.
• Browser-only — queries go straight from your browser to the resolvers, with nothing logged.

Choose the record type that matches the change you made. Propagation is per record type: an A record can be fully propagated while a TXT record on the same name is still stale.

Each lookup is sent to ten independent public resolvers in different regions, so the results reflect how the wider internet sees your record rather than a single cache.

After the queries finish, the tool compares the answers from all ten resolvers and summarises the state:

• Fully Propagated — every resolver returned the same answer, so your change is visible globally.
• Partial Propagation — resolvers returned two or more different answers, meaning caches are still catching up.
• Not Checking — the tool could not collect comparable answers, usually due to network errors.

Individual rows can also read OK (a normal answer), NXDOMAIN (the name does not exist), or Error when a resolver is unreachable. Errors are shown per resolver and do not necessarily indicate a problem with your DNS configuration.

1. Enter Domain — Type the domain name you want to check (e.g., example.com). Do not include http:// or www.
2. Select Record Type — Choose the DNS record type to check: A (IPv4), AAAA (IPv6), CNAME, MX, NS, TXT, or SOA.
3. Click Check Propagation — The tool queries 8+ global DNS resolvers via DNS-over-HTTPS and displays results in real time.
4. Review Results — Each resolver shows its response time, location, and the DNS records it returned. If all resolvers return the same result, your DNS has fully propagated.