DNSSEC – What Is It and Why Is It Important? - ICANN
Usually, enabling DNSSEC for a zone with a hosting provider is quite easy: often it entails little more than clicking a check box. For a zone owner to deploy DNSSEC by signing their zone's data, that zone's parent, and its parent, all the way to the root zone, also need to be signed for DNSSEC to be as effective as possible.
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