Reverse whois

Cost-free. But a link to this page is appreciated.
Note: This service comes with NO GUARANTEES. No liability is assumed.

What is reverse whois?
The reverse whois service, or reverse DNS lookup, queries DNS servers for PTR records and attempts to discover the node and domain names pertaining to the specified IP address. It also attempts to discover the country and managing authority of the specified IP address. In simple terms, it translates an IP address to the computer/domain name.

Type in the IP address and hit 'Reverse Whois' to get the info. Reverse whois will attempt to resolve the IP address to a known Internet host name. It will also produce some additional whois information.

To get information on a domain name, try whois

To Ping an IP address or a host, try Ping

This page uses the IP-to-Country Database provided by WebHosting.Info, available from http://ip-to-country.webhosting.info.

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