What DNS records mean
A and AAAA records point a name to IPv4 and IPv6 addresses. MX records name the mail servers. NS records list the authoritative nameservers. CAA restricts which certificate authorities may issue certificates, and SOA holds the zone's administrative metadata.
Why IPv6 and CAA matter
A missing AAAA record means no IPv6 reachability — increasingly expected by networks and search engines. A CAA record limits certificate issuance to CAs you trust, closing off mis-issuance. Nattvakt flags a missing AAAA record as a warning.
Live, not cached
Records are resolved on each scan over Cloudflare DNS-over-HTTPS, so you see current values rather than a stale local cache.
Frequently asked questions
What is the difference between A and AAAA records?
A records map a hostname to an IPv4 address; AAAA records map it to an IPv6 address.
What is an MX record?
A DNS record that specifies the mail servers responsible for accepting email for the domain, each with a priority value.
What is a CAA record?
A DNS record listing which certificate authorities are allowed to issue certificates for your domain, reducing the risk of mis-issuance.