SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
ku-praxis.de
SSL/TLS Certificate
SSL/TLS Certificate for ku-praxis.de
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- ku-praxis.de
- Valid from
- Jun 17, 2026
- Valid until
- Sep 15, 2026 (31 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 057D1183C822E6552662B67A62905D4947CF
- SHA-256 fingerprint
- CD:FB:46:99:27:58:37:97:F1:9B:45:F4:89:D2:5C:44:4F:41:BF:6E:60:0D:03:79:40:30:53:D4:88:C8:FC:6B
- Chain
- YR1 → Root YR → ISRG Root X1
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
Never get surprised by ku-praxis.de's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch ku-praxis.de continuously, notifying you the moment anything moves across all three signals:
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.
Free for your first domain: uptime, DNS, and certificate together. No credit card.