How long does it take for DNS cache to refresh?

Whenever you update or change the nameservers for a domain, it is likely to take 24-48 hours for the change to come into effect. This happens because all the ISP (Internet service provider) nodes across the world need to update their records often. They will fetch the new DNS information of your domain as well.

How long does it take for DNS cache to update?

DNS propagation is the time frame it takes for DNS changes to be updated across the Internet. A change to a DNS record—for example, changing the IP address defined for a specific hostname—can take up to 72 hours to propagate worldwide, although it typically takes a few hours.

How long does it take for DNS cache to clear?

A. By default, Windows stores positive responses in the DNS cache for 86,400 seconds (i.e., 1 day) and stores negative responses for 300 seconds (5 minutes).

How often does the DNS cache refresh?

When a DNS client creates a record, it is assigned a timestamp. The DNS client attempts to refresh this record every 24 hours. Unless the record is changed (for example, the client receives a new IP address), the timestamp cannot be refreshed for a default period of seven days.