The time to live (TTL) setting determines how long it takes for DNS changes to propagate. By default, this is typically set to 3600 seconds (1 hour). DNS changes are received by root servers globally and eventually propagate to local ISPs, which can take some time, during which your site may be unavailable. For faster propagation, consider changing the TTL setting to 300 seconds (5 minutes).
Validating Your Changes
There are several methods to verify that DNS changes have propagated. For a list of free options, refer to our DNS Tools article.