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Understanding DNS Propagation: How it works and why it takes up to 48 hours.
DNS propagation refers to the time it takes for changes to DNS records, such as A, AAAA, CNAME, MX, TXT, or nameserver records, to become visible across the internet. Although many DNS updates are visible within minutes, some users may continue to see the old website, old mail server, or outdated DNS response for several hours.