How to find a website's DNS (name server) address - nixCraft
https://www.cyberciti.biz/faq/how-to-find-a-websites-dns-name-server-address/
To check the current nameservers (DNS) for any domain name from a Linux or Unix/macOS command line: Open the Terminal application Type host -t ns domain-name-com-here to print the current DNS servers of a domain. Another options is to run dig ns your-domain-name command. To find the delegation path from the root name servers, try: dig +trace your-domain-name Above Linux or Unix, commands will show you detailed information about the domain name, including its nameserver (DNS).
Open the Terminal application
Type host -t ns domain-name-com-here to print the current DNS servers of a domain.
Another options is to run dig ns your-domain-name command.
To find the delegation path from the root name servers, try: dig +trace your-domain-name
Above Linux or Unix, commands will show you detailed information about the domain name, including its nameserver (DNS).
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