It can take up to a few hours for your domain to be operational, the time it takes for information to propagate from DNS servers.
—The time it takes for a domain to be operational depends on the registrar. The time will vary according to the registration process and the extension of the domain.
For example, a .com domain registration can take anywhere from 24 hours to 1 week before it is operational. A .org registry can take anywhere from 1 day to 2 weeks before it is operational.