The process of DNS resolution taking effect is the process of binding a domain name to an IP address. Once the resolution is effective, when a user accesses the domain name, the mechanism works as follows: the DNS server inquires which IP address the domain name points to, and then the DNS server informs the client to open the corresponding website space.

Domain Name Resolution Propagation Time

There are countless internet nodes and DNS servers worldwide. After setting up a domain name resolution record, the process of synchronizing this result across all DNS servers globally is the time required for the resolution to take effect.

The time it takes for domain name resolution records to propagate can be divided into the following three scenarios:

1.   Propagation Time for New Resolution Records:

When adding new resolution records using dns.com, they take effect in real-time.

2.   Propagation Time for Modified Resolution Records:

When modifying resolution records using DNS services, the final propagation time depends on the cache refresh time of the DNS servers of various local ISPs (since the DNS servers cache the old resolution records and do not update them in real-time). Generally, this is equivalent to the TTL time set in your previous resolution settings. For example, if the TTL value in your previous resolution setting was 10 minutes, the modification will propagate globally within 10 minutes.

3.   Propagation Time After Modifying DNS and Setting Resolution Records:

If the DNS address is modified and then the resolution record is updated using DNS cloud resolution, the final propagation time also depends on the cache refresh time of the local ISPs’ DNS servers. However, since the refresh time varies and can be relatively long, global propagation can take 24 to 48 hours. (International domains like .com require 48 hours, while domestic domains like .cn require 24 hours.)