Catch SSL expiry before your users do
Atatus SSL certificate monitoring continuously validates certificates across every domain, subdomain, and port. Multi-tier expiry alerts, chain validation, cipher-strength checks, and OCSP status in one tool. Stop losing weekends to expired certs.
24/7
Continuous certificate scanning
30/14/7
Expiry warning tiers (days)
Global
Probe locations in 15+ regions
Chain
Full certificate chain validation
Everything SSL/TLS your team needs to monitor
Continuous validation of every certificate across your domains, APIs, and internal services.
Expiry Monitoring with Tiered Alerts
Multi-tier alerts at 30, 14, and 7 days before expiry. Route to email, Slack, PagerDuty, or webhook. Never miss a renewal.
Certificate Chain Validation
Verify the full chain from leaf to root CA. Detect missing intermediates, broken chains, and incorrect server ordering.
Cipher Strength & Protocol Checks
Flag weak ciphers, deprecated protocols (TLS 1.0/1.1), and misconfigurations against modern baselines (TLS 1.2/1.3, Perfect Forward Secrecy).
Wildcard & SAN Coverage
Validate wildcard certificates and all Subject Alternative Names (SANs). Catch mismatches that break specific subdomains.
OCSP & Revocation Status
Check revocation status via OCSP and CRL. Detect compromised or revoked certificates before they cause browser warnings.
API & Internal Service Coverage
Monitor SSL on public domains, API endpoints, mail servers (SMTP, IMAP, POP3), and internal services via private probes.
Why teams rely on Atatus for SSL certificate monitoring
Prevent the classic weekend outage
Expired SSL certificates are one of the most common and most embarrassing production outages. Atatus multi-tier alerts (30 → 14 → 7 → 1 day) give your team every chance to renew — including the junior engineer, the oncall rotation, and the vendor manager — well before the certificate turns red in a browser.
Correlate SSL failures with user impact
When an SSL check fails, Atatus links it to the affected synthetic transactions, Real User Monitoring sessions showing SSL warnings, and APM traces returning TLS handshake errors. You see immediately whether a cert issue is costing conversions.
Covers every endpoint, not just the homepage
Modern applications have dozens of certificates: www, api.*, cdn.*, admin.*, status.*, and partner domains. Atatus discovers and tracks every certificate across your estate — including internal services behind private probes.
Flat pricing, unlimited certificates
Most SSL monitoring tools charge per domain or per check. Atatus flat per-host pricing includes unlimited SSL monitoring alongside uptime, synthetic, and APM — no per-cert fees.