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 e-api.cz
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- e-api.cz
- Valid from
- Jun 7, 2026
- Valid until
- Sep 5, 2026 (38 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 053D937EAA9D12AF6FA6F6E8A3151C495CE2
- SHA-256 fingerprint
- 73:D5:82:DC:C4:AC:90:D0:46:2B:B4:64:B0:69:09:CB:40:5E:40:F5:3D:E2:8D:9A:EB:11:56:45:A5:4E:B0:9C
- 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.
Never get surprised by e-api.cz's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch e-api.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.
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