SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
aktion-schulstunde.com
SSL/TLS Certificate
SSL/TLS Certificate for aktion-schulstunde.com
Self-signed- Issued by (CA)
- Acme Co
- Subject
- Kubernetes Ingress Controller Fake Certificate
- Valid from
- Sep 23, 2026
- Valid until
- Sep 23, 2027 (347 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 5A4B17A58B28EBDAB94928A6E868972E
- SHA-256 fingerprint
- E5:78:7E:2C:80:84:49:A2:01:2D:8A:21:92:53:29:E4:4E:F9:13:32:DE:5B:91:3B:12:F9:6E:EF:6C:9C:4C:0C
- Chain
- —
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
We've observed 1 previous certificate for this host. This certificate has been served since Sep 28, 2026.
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Uptime
We visit the site from multiple regions worldwide and email you within minutes if it goes down, with a per-region breakdown so a real outage stands out from a regional blip.
DNS changes
We watch NS, MX, CAA, DNSSEC, CNAME and A/AAAA records, and identify the host, network, and ASN behind them, so a real migration or hijack stands out from routine noise.
TLS certificate
We warn you 30, 14, 7, and 1 days before it expires, and flag it if the issuing authority changes or the certificate is unexpectedly replaced.
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