Propagation is the
period of time, or delay, involved in sending your domain's address
information to all the various name servers in the world. Name servers
intentionally keep track of addresses for domains in their memory for a
specific period of time (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 domain's registrar).
Name
servers refresh themselves from once an hour to once a day. Experience
dictates that 2-3 days is a good estimate for the period of time from
when a domain's DNS information is changed at the domain registrar to
when everyone in the world can see the change.
What is domain propagation?
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