I'm embarrased to ask this, because I should really know this stuff. In fact I thought I did. But I think I've confused myself. Background: Server A: Plesk box, primary DNS, ns1.mydomain.com, ip=220.127.116.11 Server B: secondary dns (via 4PSA's excellent DNS Manager), ns2.mydomain.com, ip=18.104.22.168 Problem: I'm going to be moving to a different co-lo company, and will be assigned new IPs for both Server A and Server B (call them 22.214.171.124 and 126.96.36.199). What I've decided to do is move dns completely off both of those machines and onto two separate ones running locally (which are not moving anywhere) so that when the time comes to change IPs on the servers, I can be ready and waiting and able to manually modify records whenever I want, very easily etc without Plesk getting in the way. For the sake of this discussion, we'll say the two local machines have IPs of 188.8.131.52 and 184.108.40.206) So I thought "no problem". All I do is set up the new machines, duplicate the dns records from the existing machines, then change the nameserver host record IP addresses associated with ns1.mydomain.com and ns2.mydomain.com to 220.127.116.11 and 18.104.22.168 via my resgistrar. But now comes the crucial and confusing bit. In the DNS settings for mydomain.com, I currently have NS records for ns1.mydomain.com and ns2.mydomain.com pointing to 22.214.171.124 and 126.96.36.199 Where in the heck do these come into the equation? You tell your registrar which namservers that should be associated with a domain (as an "URL"). So this needs to be translated to an IP. Now if there are namserver host records registered somewhere, shouldn't these be looked up rather than any NS records in a domain's DNS config? If not, then maybe I'm asking the wrong question. Should I be asking why it is necessary to "create" nameserver host records via a registrar when a domain has NS records? Either way, what is the best order to make changes to things? the NS records in the DNS for mydomain.com first, then change the IPs via my domain name registrar? Or the other way around? And what happens in the meantime? I mean the changes made via the registrar will propagate differently to the changes I'll make to the DNS for the domain, so something somewhere is going to see that ns1.mydomain.com points to 188.8.131.52 but will then find that ns1.mydomain.com has an NS record pointing to 184.108.40.206 (or the other way around). What sort of problems is this likely to cause me? Thanks, Faris.