SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
penzo-domacnost.cz
SSL/TLS Certificate
SSL/TLS Certificate for penzo-domacnost.cz
Expiring soon- Issued by (CA)
- Let's Encrypt
- Subject
- *.penzo-domacnost.cz
- Valid from
- Aug 30, 2026
- Valid until
- Nov 28, 2026 (18 days remaining)
- Public key
- EC 256-bit
- Serial
- 055B7067AC13AD9F35F3C37DC08A571839E4
- SHA-256 fingerprint
- 82:17:56:2A:1F:D9:DC:51:62:48:E5:21:D8:D1:C9:D7:47:3F:2A:DC:C4:1E:9E:F1:A6:07:F7:DC:02:53:A0:FB
- Chain
- YE2 → Root YE → ISRG Root X2 → ISRG Root X1
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
This certificate has been served since Nov 3, 2026.
Never get surprised by penzo-domacnost.cz's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch penzo-domacnost.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.