Check a domain's CAA DNS records to see which certificate authorities are allowed to issue SSL certificates. Designed specifically for developers and professionals, this free online networking runs entirely in your browser to process tasks quickly and securely. Enjoy unlimited usage with no data tracking, no registration required, and an entirely ad-free experience.
CAA records let you restrict which certificate authorities can issue TLS certificates for your domain. This checker performs a single DNS query and lists the CA rules it finds.
Your domain name is sent to Google Public DNS for one CAA lookup. No private files, certificates, or keys are uploaded.
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