Domains usually take anywhere from 15 minutes to 3 hours to propagate, although this process may take up to 24 hours.
Propagation for new domain registrations is usually very quick, around 15 minutes. Nameserver updates take the longest, but usually no more than 3 hours.
If you'd like to see if any changes you've made to your DNS settings are live, please go to www.intodns.com and enter your domain name there.
