SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
prag-aktuell.cz
SSL/TLS Certificate
SSL/TLS Certificate for prag-aktuell.cz
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- blogs.tschechien-online.org
- Valid from
- Sep 20, 2026
- Valid until
- Dec 19, 2026 (59 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 06020A439B7D7549551292ABDA13B74A8864
- SHA-256 fingerprint
- 8C:AB:4C:D8:15:67:DF:A5:87:B1:87:3A:A4:1D:1A:10:8B:89:BA:48:A7:7C:C6:DE:B3:F8:54:1F:F5:22:3F:5C
- Chain
- YR2 → Root YR → ISRG Root X1
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 Oct 1, 2026.
Never get surprised by prag-aktuell.cz's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch prag-aktuell.cz 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, CNAME, TXT 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.