It can take up to 24-48 for the entire World Wide
Web to recognize your new domain name (this process is called domain
propagation - and is a process which takes time for all newly
registered domains and is not controlled by us).
Any time a new domain, or "web address" is created, it takes awhile for it to "propagate" to different servers (computers) scattered over the globe.
In the meantime, a temporary address (by IP address) is given to you so you can upload your web files.