SSL/TLS Certificate Lookup

Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted

SSL/TLS Certificate for se-tuning.cz

Valid
Issued by (CA)
Google Trust Services
Subject
se-tuning.cz
Valid from
Sep 28, 2026
Valid until
Dec 27, 2026 (84 days remaining)
Public key
EC 256-bit
Serial
355896D96C4762D213C9CBD09F5DDCC2
SHA-256 fingerprint
E5:B6:C4:ED:39:FF:B2:D9:A2:17:08:BA:DC:A4:4E:D2:FF:4A:32:36:C2:AD:BA:1C:79:1C:DD:8D:A7:E4:4C:22
Chain
WE1 → GTS Root R4
Subject Alternative Names (2)
*.se-tuning.cz, se-tuning.cz

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 4, 2026.

Never get surprised by se-tuning.cz's certificate expiring

This is today's certificate. Turn on monitoring and we'll watch se-tuning.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.

Monitor this certificate free

Free for your first domain: uptime, DNS, and certificate together. No credit card.