SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
s-obra.cz
SSL/TLS Certificate
SSL/TLS Certificate for s-obra.cz
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- s-obra.cz
- Valid from
- Jul 12, 2026
- Valid until
- Oct 10, 2026 (80 days remaining)
- Public key
- EC 256-bit
- Serial
- 055D6E66A17D7BAC337363F292D9FF199A82
- SHA-256 fingerprint
- C5:21:8E:41:04:0E:57:B8:E7:5E:51:E4:43:9F:EB:CC:DB:E0:3D:58:84:C6:E9:E6:3F:49:23:31:38:3D:69:09
- 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.
Never get surprised by s-obra.cz's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch s-obra.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.
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