Reverse DNS (PTR)
Look up the reverse DNS host name of an IP address and check forward confirmation.
About the Reverse DNS (PTR) tool
Look up the reverse DNS host name of an IP address and check forward confirmation.
Tip: from any lookup box on the site you can type ptr:example.com to run this tool directly.
Results are generated live by querying the authoritative name servers of the domain, so changes you just published show up immediately. Each finding is graded as an error, warning or pass and explained so that you know what to fix and why it matters.
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