Well, I have some understanding of how
DNS works, but that doesn't allow me to answer this question. It must have to do with the time to live value of each particular record. But there are a bunch of timing parameters in
SOA. So I'm not sure, which of them I should consider. Also, different
DNS servers may treat this values differently, I take it.
So, suppose, I'm going to change domain's: 1)
IP address, 2)
NS servers. Is there a way to find out how much will it take? Probably if we assume that
DNS servers respect supplied parameters.