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DNS Open Zone Transfer

What you see when your domain has this problem
Open Zone Transfer Detected Details area Ignore

More Information About Dns Open Zone Transfer

That means we asked for the information in your entire DNS zone and your DNS server gave it to us. This is generally considered a security issue as it can reveal host names/sub-domains or other DNS records that you don't want disseminated to the public. It is often the first step taken by an attacker looking for ways to exploit your system.