SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
sluzba-skole.cz
SSL/TLS Certificate
SSL/TLS Certificate for sluzba-skole.cz
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- www.sluzba-skole.cz
- Valid from
- Oct 25, 2026
- Valid until
- Jan 23, 2027 (78 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 063BDDC38B01F3779A1303400EA529EF93DE
- SHA-256 fingerprint
- AA:8D:EE:40:F4:DC:E2:5D:20:AF:EB:FA:14:46:C8:77:96:D1:E4:D6:E4:29:08:B0:99:F3:35:1A:F8:1B:D5:1D
- 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 Sep 9, 2026.
Never get surprised by sluzba-skole.cz's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch sluzba-skole.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.