A DNS Zone is where your DNS is managed. A DNS Zone is specified by your Name Server records. Your DNS zone is where you should manage DNS records to publicly identify different services for your domain on the internet. E.g. – If you need to set up a website or email for your domain, you can set up A Records, CNAME Records, or MX Records within your DNS Zone.  If you are unsure where your DNS zone is set, contact your Domain Name Registrar or run a test of your Name Server records on a website like https://whatsmydns.net/.