DNS Record Change Checker

Get alerted the moment your A, MX, NS or TXT records change.

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Your DNS records quietly control everything: which server your website resolves to, where your email is delivered, and which records prove your identity to mail providers. When one of them changes without your knowledge, it is rarely harmless — a repointed A record can hand your traffic to an attacker, a swapped MX record can silently intercept your email, and an altered NS record can mean your whole domain has been hijacked. A DNS record change checker takes a snapshot of your records and tells you the instant anything is different.

What it checks
  • A and AAAA records — the IPs your domain resolves to, repointed during a hijack or defacement
  • MX records — where your email is delivered, swapped to intercept or reroute mail
  • NS records — your authoritative nameservers, changed during a domain takeover or registrar transfer
  • TXT records — SPF, DKIM, DMARC and verification records, forged to spoof your email or claim your domain
  • CNAME records — aliases that can be repointed to attacker-controlled hosts

Why it matters

Most DNS attacks succeed because no one is watching. A registrar account is phished, a record is quietly edited, and the change goes unnoticed for days while traffic or email is diverted. Because legitimate DNS changes are infrequent, any unexpected change is a strong signal worth investigating immediately. Continuous monitoring turns a silent record edit into an instant alert, often before customers or your security team notice anything is wrong.

How BrandSentryPro does it

Add your domain as a monitor and BrandSentryPro records a baseline of your A, AAAA, MX, NS, TXT and CNAME records. On every following check it re-resolves them and diffs the result against the last snapshot, flagging exactly which records were added or removed and alerting you when a change is detected — so an unexpected DNS edit is caught while you can still act on it.

Frequently asked questions

What is a DNS record change alert?
It is a notification that fires when one of your domain's DNS records is added, removed or modified compared to a previous snapshot. It lets you catch unexpected changes — like a repointed website or rerouted email — quickly instead of discovering them after the damage is done.
Why would my DNS records change without me knowing?
Common causes include a compromised registrar or DNS provider account, a hijacked domain, a misconfigured migration, or a third party with access making an unannounced edit. Because the change happens at your DNS provider rather than on your server, nothing on your site looks different — which is why monitoring matters.
Which DNS records should I monitor?
At minimum your A/AAAA records (where your site resolves), MX records (where email is delivered), NS records (your nameservers) and TXT records (SPF, DKIM, DMARC and verification). BrandSentryPro snapshots all of these and alerts you when any of them change.

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