To set up a vanity DNS name server using BIND 9, you need to perform the following steps:
Obtain a domain name for your vanity DNS name server. You can register a domain name through a domain name registrar, such as GoDaddy or Namecheap.
Set up a server to host your vanity DNS name server. You can use a dedicated server or a virtual private server (VPS) for this purpose. Make sure the server has a static IP address and is accessible from the Internet.
Install BIND 9 on the server. You can use the package manager of your operating system to install BIND 9, or compile it from source.
Configure the named daemon to listen on the IP address of the server. You can use the listen-on option in the options block of the BIND configuration file (usually named.conf) to specify the IP address that the named daemon should listen on.
Configure the DNS zones and records for your domain name. You can use the zone block in the BIND configuration file to define the DNS zones and records for your domain name. Make sure to specify the correct nameservers for your domain in the NS records.
Configure the reverse DNS (rDNS) records for your server's IP address. You need to set up rDNS records to associate your server's IP address with your domain name. You can contact your ISP or hosting provider to set up rDNS records for your IP address.
Set up the domain name registration to use your vanity DNS name server. You need to specify the nameservers for your vanity DNS name server in the domain name registration for your domain name.
Test your vanity DNS name server to make sure it is working correctly.
You can use tools like dig .