DNS Lookup, What it is?
DNS Lookup or Checker is a simple tool to analyze DNS records on domain such as MX, CNAME, A, TXT, NS and others records.
Domain Name System (known as DNS) is a system used to convert a name (like www.google.com) into an IP address (like 192.168.1.1). These addresses are used by computers to communicate with each other on the internet.
You can monitor DNS records on domain, there are often multiple record types that you need to verify are correct. For example, websites sometimes include www or other subdomains as either an A or CNAME record, and email servers use the MX record type.