Help! I updated my domain registration this morning, but my domain still points at my old web host!
Modifications of DNS servers take 24 hours to enter the Root DNS Servers although they show
within 10 minutes in the whois data.
Propagation of your changes can take up to 48 hours, as there is a time lag between when the updates enter the web's Root DNS Servers and when the DNS Servers of all ISPs around the world update their DNS entries.