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What is reverse DNS?
Forward DNS maps names to IPs; reverse DNS uses PTR records in special zones. Many providers set generic PTRs; absence does not prove malice, but mismatches can affect mail reputation.
How to use this tool
Paste the IP. Run reverse lookup. Compare PTR with expected HELO/EHLO names for mail debugging.
Use cases
SMTP reputation triage, correlating CDN nodes, incident response breadcrumbs, learning DNS symmetry.
Privacy and security
Lookups and probes may be sent through WebStatus.in infrastructure to reach public DNS, HTTP, or reputation systems. Only query targets you are authorized to test, and avoid pasting secrets into any network tool.