SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
kde-se-najim.cz
SSL/TLS Certificate
SSL/TLS Certificate for kde-se-najim.cz
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- kde-se-najim.cz
- Valid from
- Oct 6, 2026
- Valid until
- Jan 4, 2027 (60 days remaining)
- Public key
- EC 256-bit
- Serial
- 050D59349276B8431A263A6372F60C16A383
- SHA-256 fingerprint
- 32:43:D0:2C:CD:85:10:EE:2C:22:8B:CF:BA:61:0E:C4:17:78:B0:BD:32:0F:B2:FF:67:54:FE:2E:9D:11:0E:A7
- Chain
- YE1 → 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.
This certificate has been served since Oct 27, 2026.
Never get surprised by kde-se-najim.cz's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch kde-se-najim.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.