Check if DNS Security Extensions is enabled on your domain.
Domain Name System Security Extensions (DNSSEC) adds a cryptographic layer of security to ensure that the DNS requests are handled by the authoritative DNS servers and haven’t been tampered with en-route.
This patches a decades-old vulnerability that allows attackers to manipulate the DNS requests to send the end-users to unwanted destinations.
DNSSEC can be configured with a domain registrar or whoever manages the DNS zone. Once that's done, you can use this tool to verify the results.
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