![]() If you are using Windows, run nslookup IP_address in your command prompt. How to check the PTR record or perform a reverse IP lookup? It is the domain or hostname associated with the IP address. dns.google is the value of the record.A PTR record stored as the IP address is broken into segments and then reversed, followed by. Therefore the IP address is specified in reverse sequence.Īn A record must exist for every PTR record. Here, one thing is essential to reverse mapping. The syntax is similar to A record, but the field content is different. : It contains the resource data, the domain, or hostname.: It contains the abbreviation of the DNS record class being used.On its expiry, it needs to be activated again. It is the time in seconds for which the entry is valid. The different pieces of information are arranged in the record in their relevant fields. The PTR record's structure is the same as other DNS record types. Here the user already knows the IP address and wishes to find the domain or hostname associated with that IP. When a user enters domain name in the browser, the DNS lookup process occurs, matching the domain name to an IP address.Ī reverse DNS lookup or reverse IP lookup is an opposite process that starts with an IP address and ends with the associated domain name or hostname's lookup. Typically, a user wishes to establish a connection to a server with a domain name that is already known, but the user does not have the correct IP address. It is the opposite of both A record for IPv4 address and an AAAA record for IPv6 address, referred to as "forward DNS" records. You can get the associated domain name or hostname using the IP address. PTR records referred to as "reverse DNS" records are used in Reverse IP lookup. DNS PTR (Pointer) RecordĪ PTR record, known as a pointer record or reverse DNS record, is the type of Domain Name System (DNS) record used to store the domain or hostname for an IP address. Whereas if you enter your ip, it might point to the hostname of your ISP, or if you query your server's IP, it might show you your domain name on which it resolves. This hostname is Google's hostname against IP 8.8.8.8 which is Google's public DNS ip. The hostname is anything like a normal domain or sub-domain, i.e. Reverse DNS Check tool queries the given IP to resolve to a hostname.
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