nslookup

nslookup (Name Server Lookup) is a command-line tool for querying DNS servers to obtain domain-related information.

Purpose: nslookup is used to retrieve various DNS records, IP addresses, and domain-related details for troubleshooting and analysis.

Key Features:

• Retrieve DNS Records

• Obtain IP Addresses

• Query Specific DNS Servers

• Resolve Hostnames to IP Addresses

• Troubleshoot DNS Issues

Examples:

1. Basic DNS Query:

   nslookup example.com

   Performs a basic DNS query for the domain "example.com," displaying information such as the authoritative DNS server and its IP address.

2. Reverse DNS Lookup:

   nslookup 8.8.8.8

   Conducts a reverse DNS lookup for the IP address 8.8.8.8, providing the corresponding hostname.

3. Query Specific DNS Server:

   nslookup example.com dns.server.ip

   Directs the query to a specific DNS server (replace dns.server.ip with the actual IP address of the DNS server).

4. Resolve IP Addresses to Hostnames:

   nslookup 192.168.1.1

   Resolves the IP address 192.168.1.1 to its corresponding hostname.

5. MX Record Query for Email Servers:

   nslookup -q=mx example.com

   Retrieves the Mail Exchange (MX) records for the domain "example.com," which indicate email server information.

nslookup is a versatile tool for DNS queries and troubleshooting, commonly used in network diagnostics.

Resources:

• https://learn.microsoft.com/en-us/windows-server/administration/windows-commands/nslookup