What is propagation?
Domain Propagation is the period of time, or delay, involved in sending your domains address information to all the other name servers in the world. Name servers intentionally keep track of addresses for domains in their memory for a specific period of time which is defined by the administrator of the name server. This speeds up the process of looking up an address for a domain name. Unfortunately this cached information also stays in the name servers when it has been changed at the source of the original information (the domains registrar). Name servers refresh themselves from once an hour to once a day. Generally 1-2 days time is a good estimate when a domains DNS information is changed at the domain registrar, after which everyone in the world can see the change.
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