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Free DNS propagation checker

Just changed a DNS record? Check in seconds whether 20 public DNS resolvers around the world are serving the new value or the old cached one.

01 · The tool

Check a domain

20 free checks per day

Results appear below. Product updates go to

20 free checks per day

Querying resolvers for

Asking

20 public resolvers across 6 continents

Results for

Most common answer

No resolvers returned an answer. The record may not exist, or DNS may not have propagated yet.

Get alerted when a DNS record changes

Every 3 hours, TLDTrack checks the main DNS records on each domain you monitor and alerts you when one changes, expected or not.

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Resolver locations

Where each resolver sits, and whether it matches. Click a pin for detail.

Match Mismatch No answer / timeout

02 · What this does

What "DNS propagation" actually means

When you change a DNS record, the new value rolls out as old cached copies expire on each resolver. This tool asks 20 resolvers around the world what they're seeing right now so you can spot stragglers.

20 public resolvers

Cloudflare, Google, Quad9, OpenDNS, Verisign, Yandex, DNSPod, AdGuard and more. Spread across the Americas, Europe, Asia, Oceania and Africa.

Eight record types

A, AAAA, CNAME, MX, NS, TXT, SOA and CAA. Switch the type at the top of the form and re-run, the resolvers requery in parallel.

Consensus highlighting

We pick the most common answer across all responding resolvers, then flag any resolver returning something different so you can see exactly where the old record is still cached.

Fast, in parallel

All 20 queries fire at once and complete within seconds. No waiting through resolvers one at a time like some other tools.

03 · Why it matters

When to run a propagation check

After a DNS edit

You changed an A record or moved nameservers and want to confirm the new value is live globally before users notice.

Migrations

Moving a site between hosts or registrars. Stragglers can keep sending traffic to the old IP for hours, or days, after the change.

Debugging

"It works for me but not for them" is often a stale DNS cache somewhere. This tool shows you which resolver is the problem.

04 · Questions

Frequently asked questions

How long does DNS propagation actually take?

It depends on the TTL of the record before you changed it. If TTL was 300 seconds, most resolvers update within ~5 minutes. If TTL was 86400 (24h), some caches can take a full day to expire. Nameserver changes at the registrar level can take 24-48 hours.

Which resolvers do you query?

Cloudflare (1.1.1.1), Google (8.8.8.8), Quad9 (9.9.9.9), OpenDNS, Verisign, Level3, DNS.WATCH (Germany), Yandex (Russia), Freenom (Netherlands), AdGuard, SafeDNS, CleanBrowsing, 114DNS and DNSPod (China), Telstra (Australia), NIDA (Korea), UOL (Brazil), TENET (South Africa), Neustar and Alternate DNS, 20 in total.

Why does one resolver show a different value?

That resolver still has the old record cached and hasn't hit its TTL expiry yet. Either wait for the cache to expire, or, if it's your own machine, flush your local DNS cache. You can't force public resolvers to flush.

Is this different from "dig" on the command line?

Same idea, just across many resolvers at once and rendered visually. Under the hood we shell out to dig with +short.

What do you do with my email and the domain I check?

We use your email to send occasional monitoring tips and product updates, which you can unsubscribe from at any time. The check is not tied to any account and we never sell your data.
Mark Grice, founder of TLDTrack

Mark Grice, founder of TLDTrack. Runs FullyCoded, a Cornwall web agency, and built this to keep 500+ client sites in front of him every day.

What happens next

Want to know when DNS changes, automatically?

Do it yourself

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A one-off check is a snapshot. Every 3 hours on paid plans, TLDTrack compares the A, AAAA, MX, NS, CNAME and TXT records on each domain you monitor and alerts you when one changes, whether you made the change or not.

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See how DNS monitoring works

Talk it through

Arrange a call with Mark

If you would rather talk through how this works across every site you look after, we can go through it together.

Book a call

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05 · Explore

Explore more of TLDTrack

All features overviewEvery check TLDTrack runs and what it costs.For agenciesManage every client domain in one dashboard.TLDTrack vs UptimeRobotHonest feature-by-feature comparison.Free email deliverabilityFree SPF / DKIM / DMARC checker, report by email.iOS & Android appsPush alerts when something breaks.