Browser note: Third-party DNS (DoH) requests run from your device. CORS, rate limits, or resolver issues may block results. Query only what you are allowed to.
What Is the CAA & SRV Records Analyzer?
The CAA & SRV Records Analyzer is a DNS diagnostics tool that inspects certificate authorization and service-routing records to improve security posture and service reliability.
Why CAA Records Matter for SSL/TLS Security
CAA records restrict which certificate authorities can issue certificates for your domain, helping reduce the risk of unauthorized or fraudulent certificate issuance.
Why SRV Records Matter for Service Routing
SRV records define service endpoints using priority, weight, port, and target values, which are essential for correct routing, load balancing, and failover behavior.
Who Should Use This Tool?
This tool is ideal for webmasters, DevOps teams, IT administrators, security engineers, and DNS operators managing secure and service-driven infrastructures.
How to Analyze CAA and SRV Records
Enter a domain, optionally provide an SRV service label (such as _sip._tcp), select a resolver, and run the lookup to view parsed DNS results.
DNS over HTTPS Lookups with Multiple Resolvers
The analyzer supports DoH queries via providers like Cloudflare and Google, enabling cross-resolver checks for visibility into propagation and consistency.
Annotated CAA Output for Faster Validation
CAA entries are interpreted by flag, tag, and value to clarify authorized CAs, wildcard issuance, optional S/MIME policy via issuemail, and reporting endpoints such as iodef.
Structured SRV Breakdown for Troubleshooting
SRV records are displayed by priority, weight, port, and target host so you can quickly verify service discovery logic and redundancy configuration.
Best Use Cases for Security and Operations
Use it for certificate policy audits, VoIP/XMPP service checks, migration validation, incident response, and periodic DNS hygiene reviews.
Benefits for Reliability and Risk Reduction
Regular CAA and SRV analysis helps detect misconfigurations early, strengthens certificate governance, and supports stable service delivery across your domain.
Changelogs
v1.0.0 (May 2026): Initial release(alert-success)