Recently I had to sign up for a new VPS for my business, and took me a couple days to figure out how to register nameservers for DNS.
This is actually trivial, so I’m embarrassed to even post it, but in case I forget again, this post should server as a reminder.
I used NameCheap for my domain hosting.
Once logged in, go to the management page for that domain, then Advanced DNS.
At the bottom there is a section for Personal DNS Service.
That’s where the magic happens.
Add Nameserver dive you the option to enter an IP address for a subdomain.
The Search link will list all the nameservers already assigned to that domain.