crt.sh vs Sectigo 47-day Certificate Management: Side-by-Side Comparison (2026)
Features, pricing, ratings, and pros and cons, compared head to head.
crt.sh is a free external attack surface management tool. Sectigo 47-day Certificate Management is a commercial certificate lifecycle management tool by Sectigo. Compare features, ratings, integrations, and community reviews side by side to find the best external attack surface management fit for your security stack. Independent and vendor-neutral: our scores and rankings are earned, never bought — sponsored placement is always labeled.
CST VerdictShort answer
Security teams doing threat intelligence or domain monitoring should use crt.sh as a free, fast way to spot certificate issuance anomalies that signal domain takeover or phishing campaigns before they scale. Certificate Transparency logs index roughly 15 billion certificates, giving you real-time visibility into what's been legitimately issued against your domains and competitors' infrastructure. Skip this if you need automated alerting or integration into your SIEM; crt.sh is a lookup tool, not a monitoring platform, and catching malicious certificates requires manual checks or custom scripting. Organizations managing certificate lifecycles across hybrid infrastructure will benefit most from Sectigo 47-day Certificate Management because its 47-day renewal windows force discipline into what is otherwise a creeping operational liability. The tool maps to NIST PR.PS and PR.IR by automating discovery and renewal across internal and external certificates, eliminating the manual tracking that causes outages. This is less useful for teams already running mature certificate management workflows or those needing deeper integration with specific PKI platforms; the 47-day constraint is a feature for chaotic environments and a limitation for shops with custom expiration strategies.
