DNS Monitoring

Get alerted the moment an A, MX, NS, TXT or CAA record changes — the fingerprint of a misconfig or a hijack — with full change history. From $5/mo.

Free instant report · continuous monitoring from $5/mo · no account to check

What it monitors

Record-change alertsA snapshot of A/AAAA/MX/NS/TXT/CAA, diffed on every check — any change pings you.
Hijack detectionUnexpected NS or A changes are the fingerprint of DNS hijacking. Catch them fast.
MX & mail routingKnow immediately if your MX records change and mail starts flowing elsewhere.
CAA driftSpot removed or altered CAA records that would let the wrong CA issue certs.
Full historyEvery snapshot is kept so you can see exactly what changed and when.
Bundled, not siloedDNS sits alongside SSL, blacklist, email auth and expiry in one report.

How it compares

DHMmxtoolboxUptimeRobotDNS-only tools
A/AAAA/MX/NS/TXT/CAA diff ✓✓✗✓
Hijack / NS-change alerts ✓✓✗✓
Change history ✓✓✗✓
SSL + blacklist + email too ✓✓✗✗
Price $5/mo$129/mo$7/mo$5–20/mo

Simple pricing

$5/mo

Solo — everything below, one domain. Free tier monitors 1 domain daily.

  • A/AAAA/MX/NS/TXT/CAA snapshot diffing
  • Alerts on any record change, with the before/after
  • 15-minute DNS re-checks
  • Plus SSL, blacklist, email auth and expiry — all included
  • Email alerts, resolved notices and a weekly digest
Start with a free check

Frequently asked questions

What is DNS monitoring?

DNS monitoring takes a snapshot of your DNS records and compares it on every check, alerting you the instant an A, MX, NS, TXT or CAA record changes — whether from a mistake, an expired service, or an attacker.

How does it help against DNS hijacking?

Hijacking almost always shows up as a changed nameserver or A record pointing traffic elsewhere. Because we diff every snapshot, an unexpected NS or A change triggers an immediate alert so you can react in minutes, not days.

Which records are monitored?

A, AAAA, MX, NS, TXT and CAA. That covers where your site and mail point, your delegation, your SPF/DMARC TXT records and which CAs may issue certificates for you.

How are changes detected?

Each check resolves your records over DNS-over-HTTPS and compares them to the stored baseline. Any difference is recorded with a timestamp and, for paid domains, alerted within the check interval.

Is there a free plan?

Yes — monitor one domain free with daily snapshots. Solo ($5/mo) adds 15-minute checks and more domains.