Enter a domain to check its HTTPS certificate's expiry date, issuer, and subject alternative names. Connects on port 443 only; up to 20 checks/hour per visitor.
curl -sS "https://devops.majbase.com/certificate-expiry/api?domain=example.com"Returns {"hostname", "common_name", "issuer", "valid_from", "valid_until", "days_remaining", "is_expired", "is_expiring_soon", "subject_alt_names", "serial_number"}, or {"error": "..."}. Rate limited to 20 checks/hour per source IP; connects on port 443 only, and refuses to connect to a hostname that resolves to a private/internal address.