DNS CAA (Certificate Authority Authorization) Record Builder (RFC 8659)
Lock down SSL/TLS issuance to authorized CAs (Let's Encrypt, DigiCert, Google).
Execution runs 100% locally inside the browser sandbox using HTML5 Canvas, Web Cryptography Subtle API, and Web Workers. No data is ever transmitted across the network.
Zero network latency. Operates completely offline with zero dependencies on third-party backend servers or cloud services.
Built according to official RFC specifications, cryptographic test vectors, and enterprise-grade data transformation standards.
How to Use DNS CAA (Certificate Authority Authorization) Record Builder (RFC 8659)
Specify your domain name.
Check Let's Encrypt, DigiCert, Google, Sectigo, or Cloudflare.
Copy BIND/Cloudflare zone records into your DNS manager.
Frequently Asked Questions
What is a CAA record?
A CAA record tells Certificate Authorities which entities are permitted to issue SSL certificates for your domain.
Can I restrict wildcard certificates?
Yes, toggle the Wildcard Certificates setting to allow or prohibit wildcard issuance.
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