The time it takes for a domain name DNS modification to take effect can vary, but typically it ranges from a few minutes to 48 hours. This period is known as the DNS propagation time. During this time, DNS servers around the world update their records to reflect the changes you've made.
For example, if you change the A record of your domain to point to a new server, it might take anywhere from a few minutes to 48 hours for this change to be fully propagated globally. This means that some users might see the new server immediately, while others might not see the change until later.
To ensure faster propagation, you can use services like Tencent Cloud's DNSPod, which offers accelerated DNS propagation features. This service can help reduce the time it takes for DNS changes to take effect, making it easier for you to manage your domain's DNS settings efficiently.