beginnerTechnical
DNS Propagation
The time it takes for DNS changes to spread across all servers globally, typically a few hours.
By DomainGlossary EditorialLast updated Mar 27, 2026
DNS propagation is the time it takes for DNS changes to spread across all DNS servers globally. When you update DNS records (like nameservers or A records), the changes don't take effect instantly — they propagate as DNS caches expire based on each record's TTL (Time to Live). Propagation typically completes within a few hours but can take up to 48 hours in rare cases.