Free agency tools / DNS & Email Checker
DNS & Email Record Checker
One lookup for the records that decide whether a site resolves and its email lands in the inbox: NS, A, MX, SPF, DKIM and DMARC — graded, with a report link you can send to your client.
Results for
Nameservers
Who answers DNS queries for this domain.
Checking…
Web records
Where the site itself points (A / AAAA / CNAME).
Checking…
MX — mail servers
Who receives email for this domain.
Checking…
SPF
Which servers are allowed to send mail as this domain.
Checking…
DMARC
What receivers should do when SPF/DKIM fail.
Checking…
DKIM
Cryptographic signing — probed against common selectors.
Checking…
Blacklist
Is the mail server's IP on a DNS blocklist?
Checking…
How it works
- 1Enter any domain — we query its records live over public DNS-over-HTTPS.
- 2NS, A, MX, SPF, DKIM and DMARC are each checked and graded, with the fix spelled out.
- 3We resolve the mail server's IP and check it against DNS blocklists, then score overall email health.
Frequently asked
Is this live data?
Yes — every lookup runs in real time against Cloudflare and Google DNS. Nothing is cached on our side.
Why does DKIM say 'not detected'?
DKIM keys live on sender-specific selectors, so a negative result isn't proof it's missing — confirm the selector with the mail provider.
What DMARC policy should I use?
Move to p=quarantine or p=reject once your reports look clean; p=none only monitors and doesn't stop spoofing.