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Check the Certificate Authority Authorization (CAA) records for slack.com. See which certificate authorities are allowed to issue SSL/TLS certificates.
CAA (Certificate Authority Authorization) records specify which certificate authorities (CAs) are permitted to issue SSL/TLS certificates for slack.com. Without CAA records, any CA can issue a certificate for slack.com, increasing the risk of mis-issuance. By configuring CAA records, domain owners restrict certificate issuance to trusted CAs only, adding an important layer of defense against unauthorized certificate creation. Our checker shows all CAA records for slack.com, including issue, issuewild, and iodef tags.