Perform a free reverse DNS (rDNS) lookup to get the hostname associated with an IP address
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A hostname lookup (also known as a reverse DNS or rDNS lookup) converts an IP address to its associated hostname. This is the opposite of the more common ‘forward DNS lookup’ that converts a hostname to an IP address.
This tool allows you to perform a reverse DNS lookup for any IPv4 or IPv6 address. And — like all of our tools — it's completely free to use.
Discover your public IP address and detailed information about your connection.
Convert CIDR notation to IP address ranges and vice versa.
Convert IP addresses to their numeric representation and back.
Expand or collapse IPv6 addresses to their full or shortened forms.
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Our policy for safe geolocation means we don’t identify specific individuals or households. When you submit your location here, we only keep a lower-accuracy version for a limited amount of time, without any other identifying data.
Read how this works in our privacy policyWe think you’re in Columbus, Ohio, United States
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Waiting for location...
Our policy for safe geolocation means we don’t identify specific individuals or households. When you submit your location here, we only keep a lower-accuracy version for a limited amount of time, without any other identifying data.
Read how this works in our privacy policy