Domains usually take anywhere from 15 minutes to 3 hours to propagate, although this process can sometimes take up to 48 hours.
Before a domain propagates, you can still access your website by going to http://ServerIP/~accountName where ServerIP is the IP address of the server and account name is your account name on the server. Both your server’s IP address and your account name are readily available in the Welcome Email you received when you created your account with us.