On Unix-like operating systems, the dig command performs network DNS lookups. Description dig (which stands for domain information groper) is a flexible tool for interrogating DNS name servers. It performs DNS lookups and displays the answers that are returned from the name server (s) that were queried.

dig command stands for Domain Information Groper. It is used for retrieving information about DNS name servers. It is basically used by network administrators. It is used for verifying and troubleshooting DNS problems and to perform DNS lookups. Dig command replaces older tools such as nslooku p and the host.

In its simplest form, the syntax of the dig utility will look like this: dig [server] [name] [type] [server] – the IP address or hostname of the name server to query. If the server argument is the hostname then dig will resolve the hostname before proceeding with querying the name server.