Free online utilities to convert,
calculate, and transform.

Reverse DNS Tool

Use the following reverse lookup a domain name from its IP address.

This IP Address resolves to:

Reverse DNS (Domain Name System)

is a method of resolving an IP address to a domain name. It works by looking up the domain name associated with a given IP address, rather than the IP address associated with a given domain name (which is the primary use of DNS).

Reverse DNS is used for a variety of purposes, including:

  • Network administration: Reverse DNS can help network administrators identify and troubleshoot problems with their network by providing information about the hosts that are connected to it.
  • Email authentication: Reverse DNS is used as part of email authentication processes such as SPF (Sender Policy Framework) and DKIM (DomainKeys Identified Mail) to verify that the domain name associated with an email message matches the IP address of the sending mail server.
  • Website analytics: Reverse DNS can be used to collect data about the visitors to a website, such as their geographic location and internet service provider (ISP).
  • Security: Reverse DNS can be used as part of security measures to help identify and block malicious traffic, such as botnets and denial-of-service attacks.

Overall, reverse DNS is a useful tool for identifying the domain name associated with a given IP address, and it has a variety of practical applications in networking, email, website analytics, and security.

Other Network Utilities


Help us improve this page by providing feedback:

Share with