SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
letenky-letenky.cz
SSL/TLS Certificate
SSL/TLS Certificate for letenky-letenky.cz
Self-signed- Issued by (CA)
- brn-web-rd.sa.cz
- Subject
- brn-web-rd.sa.cz
- Valid from
- Feb 8, 2017
- Valid until
- Feb 6, 2027 (82 days remaining)
- Public key
- RSA 2048-bit
- Serial
- A7EE88DA58BA2ADF
- SHA-256 fingerprint
- 30:38:D5:27:45:80:18:3A:6F:5F:E6:47:8C:FE:10:39:62:CD:74:B5:F3:8E:D7:C1:DD:9D:71:4C:4A:1C:14:2D
- Chain
- brn-web-rd.sa.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 11, 2026.
Never get surprised by letenky-letenky.cz's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch letenky-letenky.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.