SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
it-sprava.cz
SSL/TLS Certificate
SSL/TLS Certificate for it-sprava.cz
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- it-sprava.cz
- Valid from
- Aug 28, 2026
- Valid until
- Nov 26, 2026 (65 days remaining)
- Public key
- RSA 4096-bit
- Serial
- 05E4D3E11DB1F262CF1CE8B8B511E08EBD31
- SHA-256 fingerprint
- 2A:55:B7:26:E0:D3:2E:2E:1A:85:F5:AD:47:BF:8C:84:8B:E2:AF:CB:75:97:0E:3F:50:66:C5:AB:92:57:32:91
- Chain
- YR1 → Root YR → ISRG Root X1
Certificate Authority Authorization (CAA)
The serving CA (Let's Encrypt) is authorized by this domain's CAA records (letsencrypt.org, sectigo.com).
Never get surprised by it-sprava.cz's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch it-sprava.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, 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.