Free tool
DNS record checker
Query public records through a resolver and interpret the result with caching and propagation in mind.
Check domain
What it checks
Resolution
A, AAAA, and CNAME visible at check time.
Mail and delegation
Published MX and nameserver data.
Security and text
CAA and TXT, including mail controls and verification records.
How to interpret the limits
Does not query internal or split-horizon DNS.
The resolver may retain cached data for the TTL.
A spot check cannot show when a record changed.
Safe use and privacy
Enter only public domains you are authorized to review. Queries are not stored; private IPs, localhost, reserved ranges, and mixed destinations are blocked. Results are point-in-time public metadata.
Frequently asked questions
Is the queried domain stored?
No. The tool processes the lookup to respond and does not persist the domain or result.
Can I check an IP or internal service?
No. Only public domains are accepted; direct IPs and private, local, or reserved destinations are blocked.
Move from a check to monitoring
A spot check helps diagnosis. Monitoring keeps history and warns you when evidence changes.
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Technical guide
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Build a DNS baseline, compare normalized snapshots, and prioritize changes to A, AAAA, CNAME, MX, NS, TXT, and security records.
Technical guide
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Check SPF, DKIM, and DMARC syntax and alignment, understand common errors, and learn why a single pass does not guarantee protection.