Domain Name Kali Linux. Host name information is stored in a file etchostname. Its better to choose a onion domain extension.
Linux find computer name using hostname command. Your computer name with Fully Qualified Domain Name FQDN. Type following command and click on DNS tab Setup hostname and domain name.
When installing kali you get to choose a hostname but in case you accepted the default hostname kali and later want to change it heres a How to guide to change hostname in Kali Linux.
Host is a simple utility for performing DNS lookups. Dig is a flexible cli tool for interrogating DNS name servers. Hostname Sample outputs vivek-laptopnixcraftin Where vivek-laptop. You might be in a scenerio where you want to change DNS in Kali itself due to some constraint.