DNSSEC TLSA Validator

The DNSSEC TLSA Validator analyzes TLSA records published in DNS for a given domain and port, and assesses their consistency with the domain's TLS certificates. Conceptually, it separates DNS record validation from TLS handshake logic to detect misconfigurations early. It reports the TLSA usage, selector, and matching type found, along with DNSSEC validation status and any discrepancies with the certificate data. This yields actionable insights for operators managing DNSSEC deployments and DANE-enabled services, enabling faster remediation of insecure bindings and improved trust in TLS connections. Core features include: querying TLSA records for a domain and port, validating DNSSEC proofs when available, and producing structured outputs suitable for automation. The tool is especially valuable for security teams performing compliance checks, network operators validating mail or web services secured via DANE, and auditors assessing DNS and certificate integrity. Unique value lies in its TLSA-centric verification which remains effective regardless of TLS handshakes, and its ability to highlight exact field mismatches (usage, selector, or matching) that undermine the DANE trust chain. Use cases include pre-deployment validation of mail servers, web services with DANE bindings, and post-change audits to confirm continued TLSA alignment with issued certificates.