Live-TLS-Handshake-Prüfung: X.509-Vertrauenskette, Ablaufdaten, SAN-Enumeration und Protokollaudit am Edge.
Stateless edge execution • Zero database retention • No user tracking or behavioral profiling
Every network lookup executes inside a temporary, isolated V8 sandbox deployed across Cloudflare's global edge. Each isolate is instantiated on demand, parses public DNS or TLS socket records in transient RAM, returns the result stream, and terminates immediately.
IncogSay operates under a strict zero-retention guarantee. Target domains, submitted URLs, and user IP addresses are never written to disk, stored in relational databases, or logged in persistent files. We do not maintain historical query logs or link lookups to user identities.
All tools are completely free and functional without registration, user logins, or account creation. We never deploy invasive session fingerprints, third-party analytics trackers that capture input payloads, or behavioral profilers. Your queries remain ephemeral and anonymous.
Geben Sie den Hostnamen oder die Domain (z. B. beispiel.de oder api.beispiel.de) ein.
Klicken Sie auf "SSL-ZERTIFIKAT PRÜFEN", um einen TLS-Handshake von unserem Edge-Knoten zu starten.
Überprüfen Sie die ausstellende Zertifizierungsstelle (CA), die SAN-Liste und das Gültigkeitsdatum.
Prüfen Sie, ob alle Zwischenzertifikate (Intermediate CAs) korrekt hinterlegt sind.
Ein häufiger Fehler bei Webserver-Konfigurationen ist das Fehlen von Intermediate-Zertifikaten im Bundle. Während manche Desktop-Browser den Fehler durch AIA-Chasing kaschieren, scheitern mobile Endgeräte und API-Clients zuverlässig mit TLS-Fehlern.
Every SSL diagnostic query performs a live cryptographic handshake with port 443 of the target hostname, evaluating certificate chain integrity, cipher negotiation, and Certificate Transparency logs.
Validates that the server serves the complete, ordered chain (End-Entity → Intermediate CA → Root CA), preventing mobile and Linux curl clients from failing due to AIA chasing gaps.
Verifies TLS 1.3 priority and confirms deprecation of insecure TLS 1.0 and 1.1 protocol suites. Ensures ECDHE key exchange ciphers for forward-secret session security.
Extracts all Subject Alternative Names (SANs) from the X.509 v3 extension. Detects common wildcard vulnerabilities where apex domains are omitted from *.domain.com certificates.
Cross-checks issuer fingerprints against public, tamper-evident Certificate Transparency logs to proactively flag unauthorized or rogue CA issuance events.
Common administrative and operational scenarios solved by this tool
With modern CAs issuing certificates valid for only 90 days, automated renewal hooks (Certbot, acme.sh) can silently fail due to DNS validation timeouts or rate limits. Real-time auditing surfaces expiration windows before production traffic is blocked.
While desktop Chrome caches intermediate CA certs, mobile browsers (iOS Safari, Android Chrome) and API clients strictly fail with SEC_ERROR_UNKNOWN_ISSUER if the server neglects to send the intermediate bundle. Our audit catches missing chain links instantly.
Verify that your certificate covers all required hostnames, apex domains, and subdomains (e.g. both example.com and www.example.com or api.example.com), preventing ERR_CERT_COMMON_NAME_INVALID errors across distributed microservices.
Confirm your web server enforces TLS 1.3 or strong TLS 1.2 with forward secrecy (ECDHE), while deprecating legacy TLS 1.0, TLS 1.1, and CBC ciphers to maintain strict compliance with PCI DSS 4.0, HIPAA, and SOC 2 transit standards.
Direct, peer-reviewed engineering answers to core deployment, troubleshooting, and compliance questions.
Geben Sie den Hostnamen in unser Prüffeld ein. Das Tool baut binnen zwei Sekunden eine TLS-Verbindung auf und prüft Gültigkeit, Aussteller und Zertifikatskette.
Moderne Browser blockieren den Zugriff mit drastischen Sicherheitswarnungen (z. B. NET::ERR_CERT_DATE_INVALID), was zu sofortigen Besucherverlusten führt.