SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
re-klim.cz
SSL/TLS Certificate
SSL/TLS Certificate for re-klim.cz
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- re-klim.cz
- Valid from
- Sep 7, 2026
- Valid until
- Dec 6, 2026 (23 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 058CE1F6D6F8ED369A53FC7B548A0885D29A
- SHA-256 fingerprint
- 45:67:07:B8:18:5F:6D:80:C7:3E:D1:93:FE:49:7B:97:5E:07:C8:08:60:D3:30:DE:42:1A:6E:00:C2:BB:86:EA
- 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.
This certificate has been served since Oct 10, 2026.
Never get surprised by re-klim.cz's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch re-klim.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.