DNS CheckerMonitorReady
We look up a domain's DNS records and check the settings that most often break a website or its email: missing records, name servers that disagree, and SPF, DMARC and DKIM problems.
Only public DNS data is read. No account needed. 6 of 6 checks left today.
How to use it
Four steps from an address to results you can act on.
A, AAAA, CNAME, MX, TXT, NS, CAA and SOA records.
The answer from each name server.
SPF, DMARC and DKIM records.
What each problem breaks and how to fix it.
What it brings you
Every result comes with the proof behind it, so you can check it yourself.
Every common record type with its time to live.
Servers that disagree or don't answer.
SPF, DMARC and DKIM set up and valid.
CAA records that limit who may issue certificates.
What the result looks like
Results are sorted so the most important rows come first. This example uses sample data to show the layout.
| Record | Value | Status |
|---|---|---|
| A | 203.0.113.10 | OK |
| MX | mail.example.com | OK |
| SPF | v=spf1 include:_spf.example.net ~all | Valid |
| DMARC | Not found | Missing |
Questions
Resolvers keep old answers until the record's time to live runs out.
Large mail providers now expect it from senders. Without it, mail is more likely to be refused or marked as spam.