There are many online sites or tools which are used to show the DNS servers details for a domain.
Below are some sites you can refer to.
2 – https://www.dnswatch.info/
3 – https://who.is/
4 – https://centralops.net/co/
Just enter your domain name and you will get all detailed DNS information about your domain including it’s nameserver’s, A record, MX record, etc.

