DNS Propagation Checker

Compare DNS answers from global public resolvers in one request

Domain query

Server-side DoH queries — no browser consent banner needed.

Try an example:

Examples

A record after migration

Input

example.com · A

Output

8/10 resolvers agree · propagated: yes

Most resolvers returning the new IP indicates the change has largely propagated.

About this tool

DNS Propagation Checker queries multiple global public resolvers in parallel from the DevTools backend and shows whether they return the same answer for your domain.

A single browser or laptop resolver cannot show propagation — it only sees one resolver path. This tool is for post-change verification after TTL updates, migrations, or registrar transfers.

How to use

Enter domain and record type
Choose A, AAAA, MX, TXT, NS, CNAME, or SOA and enter the apex or subdomain you changed.
Check propagation
Review each resolver's answer and the consensus badge.
Wait for TTL
Disagreement often means old TTL not expired yet — compare with your authoritative DNS panel.

Use cases

Confirm a nameserver change

After updating NS records at the registrar, verify resolvers worldwide see the new delegation.

Debug email deliverability

Check MX or TXT propagation before closing a DNS change ticket.

Common mistakes

Mistake:Expecting instant global agreement.

Fix:Respect the previous record's TTL. Large TTLs can take hours to converge.

Mistake:Checking the wrong name.

Fix:Query the exact FQDN you changed (apex vs www vs mail subdomain).

Frequently asked questions