DNS propagation is the period during which internet providers and DNS resolvers refresh cached information after you change nameservers or DNS records. Some visitors may see the old destination while others already see the new one.
Propagation time depends on record TTL values and third-party caches. Avoid repeatedly changing the same record during this period. Verify that the nameservers and DNS records are correct, then allow time for caches to update. Local browser, operating-system, router, or ISP DNS caches may also need to expire.
