A domain propagation or DNS propagation is the process that takes place every time there are changes in the DNS records of a domain around the world. During this period, your website or VPS server may not be accessible from all devices, or may appear as unstable or insecure to you and to your users. It can take up to 48 hours or sometimes even reaching 72 hours to complete. The solution is to use your IP address to access your server temporarily, or wait until it is completed before doing anything.