Updating zone file in bind
If you are planning to make DNS changes soon, you will want to start by setting a low TTL.
This helps ensure your changes will propagate, be recognized on the Internet, more quickly.
At least 24 hours ahead of time, update your TTL to a shorter value.
DNS caching is an important way to reduce load on the servers, and it is best to keep this traffic low.On Windows, you can use the This will return the authoritative name server’s info for that domain, including the default TTL in both seconds and hours.In this case, the website’s TTL is set to 3600 seconds (1 hour).It will partly depend on how long the lease is on the IP address.The more often the IP address changes, the lower the TTL you should use.