I'm sorry if this question is too broad, but I'm not sure where to get started. Basically what I'm trying to accomplish is this:
a) I am trying to set up my own private nameservers (say n1.example.com and n2.example.com). Let's say you own example.com and you change your namservers to these 2.
b) Now, once you do that, in most hosting providers, you are usually presented with some page (like, you've successfully migrated to us, blah blah).
I want to be able to CONTROL that page (have a web app in the background that will accept these requests). Now, I'd prob need to go at a very lower level than having a VPS for this.
a) Do I need my own DNS server? Can I simply use a vanity private name servers?
b) More importantly, once someone changes the name servers to mine, HOW DO I CONTROL what happens when someone lands on their homepage?
Please excuse me, once again, this may be a more general question than needed, but I really don't know how to start here or what things to familiarize myself with.