Reverse DNS Lookup

This tool does a reverse DNS lookup of an IP address by searching domain name registry and registrar tables. IP addresses are four numbers in the range of 0 to 255 separated by periods.

You may be able to identify the domain name of a spammer sending you spam email or the domain name of a computer trying to break into your firewall or someone trying to hack your system.

You may also be able to use this information to determine the name of the internet service provider assigned to a particular IP address.



IP Address*
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