What is a Reverse Domain Name System Lookup?

NOIDA, India - Jan. 20, 2021 - PRLog -- Reverse Domain Name System (DNS) Lookup

As is evident from the term itself, a Reverse Domain Name System (DNS) Lookup refers to the process or sequence that is the opposite or reverse of a Domain Name System (DNS) Lookup. In a traditional Domain Name System (DNS) lookup, the DNS or hostname is queried to get the corresponding IP address. This process is reversed in Reverse Domain Name System (DNS) Lookup. In it the IP address is queried to find the hostname. Reverse DNS lookup is a mechanism that is entirely separate from the traditional DNS lookup. When an IP address is entered into the Reverse DNS Lookup Tool, which is a tool meant specifically for this purpose, it becomes possible to find the domain name that is associated with that particular IP address. A specific type of DNS record called the PTR record is used to store the Reverse DNS records. Such a record is also referred to as a Resource Record (RR). The IP addresses of all systems are specified by it. For this purpose an inverted notation is used.

PTR Record

As mentioned above, a PTR record is used to store the Reverse DNS records. A pointer (PTR) record is a type of a DNS record. It aids in resolving an IP address to a hostname or domain. It serves the opposite function of an A record. An A record resolves a domain name to an IP address and it should be present for each PTR record. For the purpose of Reverse DNS lookup, it is the PTR record that is used. An IP address is used to get the hostname or the domain name that is associated with it.

Web Hosting

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