What Is an NSLookup Tool?

Definition

An NSLookup tool is a utility that allows you to query and view DNS records, reverse DNS, whois, and traceroute information for a given domain name or IP address.

Purpose

NSLookup (name server lookup) tools are used to:

• Troubleshoot DNS issues
• Verify DNS settings
• Gather information about a domain or IP address

How It Works

An NSLookup tool works by sending a query to a DNS server. The DNS server then responds with the requested information, such as the IP address associated with a domain name or the domain name associated with an IP address.

Benefits

NSLookup tools can provide valuable information for website owners, network administrators, and anyone else who needs to troubleshoot DNS issues or gather information about a domain or IP address.

Types of NSLookup Tools

There are two main types of NSLookup tools:

• Command-line NSLookup tools
• Web-based NSLookup tools

Command-line NSLookup tools are available on most operating systems. Web-based NSLookup tools are available online and can be used without installing any software.