SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
lazne-losiny.cz
SSL/TLS Certificate
SSL/TLS Certificate for lazne-losiny.cz
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- lazne-losiny.cz
- Valid from
- Aug 29, 2026
- Valid until
- Nov 27, 2026 (38 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 0629C932F51C670E379E381F0F1DF49B7959
- SHA-256 fingerprint
- 6E:62:7B:37:CC:1E:B1:48:94:73:C4:4F:E9:D6:31:42:48:C0:9A:2F:BA:0A:82:EA:16:1C:1E:65:98:75:00:AF
- 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.
We've observed 1 previous certificate for this host. This certificate has been served since Sep 4, 2026.
Never get surprised by lazne-losiny.cz's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch lazne-losiny.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.