Axelspire helps engineering and security teams eliminate certificate-driven outages through enterprise PKI automation and infrastructure intelligence — founded by Dan Cvrcek, PKI architect, applied cryptographer, CISO level consultant focusing on efficient operations of technology solutions. He has 20+ years experience at Barclays, Deutsche Bank, TSB Bank, Sky UK, Comcast, and others.

Welcome to our technical knowledge base covering certificate lifecycle management, ACME automation, and post-quantum migration.

Tag: a-record

All PKI knowledge base pages tagged with "a-record".

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HTTP-01 Challenge DNS Configuration — HTTP-01 validation requires DNS A/AAAA records pointing to your server on port 80. Learn requirements, verification steps, and how to fix resolution failures.

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