Unfortunately as far as the Angular router is concerned subdomains are not even a part of your app. In order to redirect to a subdomain you need to do a few things.
1) modify the /private/etc/hosts file to include the subdomain. From the command line
sudo vi /private/hosts/etc
then add the subdomain next to your localhost alias. This will allow your local resolve the subdomain to your app
2) create a route filter that will do a redirect to your subdomain given certain conditions. In order to actually redirect just use
myRedirectionFilter = function(){
if("foo" !== "bar"){
window.location.href = "http://serverName.minetop.net"}
}
3) use the filter in the resolve function in your routes.js file.
.when('/', {
templateUrl : '../design/template/pages/home.html',
controller : 'mainCtrl',
resolve: myRedirectionFilter()
});