EmbedCopy the following HTML iframe code to your website:<iframe src="https://www.validify.ai/glossary/ptr/?embed=1&length=X" style="width:100%;height:300px;border:solid 1px black;" class="cm-embedded-content"></iframe>Copy to clipboardA DNS record used for reverse DNS (rDNS) that maps an IP address to a hostname; used as a trust signal in email.
