Every time you use a domain name on your computer its DNS information will be stored in the cache. Even if a record is changed, DNS servers will continue working with its formal value from cache until this time has passed.
This is the essence of DNS propagation — it is the time required for DNS servers worldwide to update their cached information for a domain name. It is influenced by the TTL of DNS records that might have changed, but there are also other factors that could come into play.
A DNS change requires up to 72 hours to propagate worldwide, although most often this happens in a matter of hours. Flushing your own local DNS cache can help speed up the process. More information on how to flush your local cache based on the OS you are using can be found in the articles below:. What is DNS propagation and why does it take so long?
The intermediary providers must update their DNS caches from time to time. They have to keep caches, in order not to overload the internet. Consequently, DNS caching time has been reducing. Nowadays, we can see it in a few hours only. The following graphic explains the DNS propagation time, on average:. Whenever the caching time expires, it will query again the domain registrar to check for any updates in DNS. Or even, we can simply change our local DNS servers. This way there is a big chance to force the new DNS to update.
We can recommend these free DNS resolvers:. There are some free sites available, that checks your DNS records for free.
This is a very common question from our customers. Firstly, DNS propagation may take from a while to several hours to complete. Share and Enjoy!
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