EmbedCopy the following HTML iframe code to your website:<iframe src="https://www.validify.ai/glossary/rdns/?embed=1&length=X" style="width:100%;height:300px;border:solid 1px black;" class="cm-embedded-content"></iframe>Copy to clipboardReverse DNS: checking that a sending IP maps via PTR to a hostname, often compared with forward DNS, used as a legitimacy signal.
