DNS Record & Subdomain Scanner

DNS Record Scanner

Scan DNS servers for common records of any domain. Helpful for verification and troubleshooting ACME challenges for SSL certificates.

Fast Scanning

Get results in seconds

Complete Records

A, MX, TXT, NS and more

Export Options

Download as zone file

Free DNS Record Scanner & Verification Tool

SiteCenter.org queries your authoritative name servers in real time and reveals the exact A, AAAA, CNAME, MX, TXT, SPF, DKIM, DMARC and SRV records the Internet sees right now.

Need to pass a Let's Encrypt or other ACME challenge? Paste the domain and instantly confirm the live value of _acme-challenge, google-site-verification, facebook-domain-verification and every other TXT token used for ownership checks.

Lost your zone file—or suspect stale DNS at your registrar? Export the scan results, rebuild your records in seconds, and avoid downtime.

  • Real-time look-ups direct from authoritative NS records
  • Highlights missing or mis-configured DMARC / DKIM / SPF entries that kill email deliverability
  • One-click copy of any record or the full reconstructed zone file
  • 100 % free, no sign-up, no throttle for personal use

Start scanning now — enter a domain above and get a full DNS health report in under five seconds.

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