SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
abc-lekarna.cz
SSL/TLS Certificate
SSL/TLS Certificate for abc-lekarna.cz
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- abc-lekarna.cz
- Valid from
- Oct 9, 2026
- Valid until
- Jan 7, 2027 (52 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 054F2CCA9183CCD49A8D542684CA65116601
- SHA-256 fingerprint
- B7:DD:4A:E9:9E:A1:22:0A:FD:25:1E:EE:BE:1D:BD:21:BD:F2:02:33:04:12:CE:FD:1A:72:2A:85:4B:80:E6:09
- Chain
- YR2 → 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 Oct 26, 2026.
Never get surprised by abc-lekarna.cz's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch abc-lekarna.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.
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