One can point your site to any designated IP address you want without changing the Name server of your Domain. Yes, you will be able to view/test your site on new server without changing the name servers as well as having trouble of using site Preview options in Control panel like Plesk. This option is also helpful in the case of some site that use .js script in their codes since those scripts don’t work in Plesk site preview option. Specially in case of sites that work on DotNetNuke [DNN].
So here we go:
On your local machine, [AND NOT THE SERVER]:
Goto START >> Run >> and Type:
And hit Enter