Your website is accessible thanks to several DNS servers, located all around the world:
Domain DNS zone propagation is a process of applying changes, related to the domain’s DNS zone, around the world. For your domain to work correctly and stable, all servers should have the same information on them.
For different DNS records, the propagation time differs. For NS (nameservers) and A records, the propagation takes up to 48 hours (usually less), as they are main DNS records of your domain. Other DNS records usually propagate in a few hours.
Propagation process is fully automatic, you can monitor the process with the DNS Checker: just insert your domain name, choose the DNS record type and click Search:
When the propagation process is completed, you might need to flush DNS cache to see the changes 😊