Check how a DNS record resolves across multiple public resolvers in one place. This tool helps you verify whether a recent DNS change has propagated consistently or whether different resolvers still return different answers.
It is useful for domain changes, migrations, cutovers, CDN updates, mail record changes, and troubleshooting cases where one network sees the new record and another still sees the old one.
| Resolver | Status | Answer | Match | Notes |
|---|
How to use
- Enter the domain name you want to check.
- Select the DNS record type such as A, AAAA, MX, TXT, NS, or CNAME.
- Optionally enter an expected value if you want to verify a specific record result.
- Click Check propagation to compare answers across public resolvers.
- Review the summary and resolver table to see whether the record is fully propagated or still mixed.
DNS propagation checker FAQ
It queries the same DNS record against multiple public resolvers and compares the answers. This helps you see whether propagation is consistent or still split across providers.
Resolvers cache DNS answers for different periods based on TTL and their own refresh timing. After a DNS change, some resolvers may return the new value while others still return the old one for a while.
Use an expected value when you already know what the new record should be. It makes the result easier to read because the tool can mark which resolvers already match that exact value.
No. This tool is focused on propagation comparison across resolvers. For broader DNS inspection and PTR lookups, use the DNS lookup tool.
Practical examples
- Check whether a new
Arecord has propagated after moving a website to a new server. - Verify whether updated
MXrecords are visible across resolvers before switching mail flow. - Confirm whether a
TXTrecord for domain verification is consistently published. - Compare
CNAMEanswers after a CDN or reverse proxy change.