SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
hta-cz.cz
SSL/TLS Certificate
SSL/TLS Certificate for hta-cz.cz
Hostname mismatch- Issued by (CA)
- Let's Encrypt
- Subject
- fazole.allstar.cz
- Valid from
- Oct 16, 2026
- Valid until
- Jan 14, 2027 (71 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 05EC8A0880530CE69EDCA913315FF2647CDD
- SHA-256 fingerprint
- 01:0D:AE:C7:22:0E:36:FE:B0:63:A3:0B:A7:C5:72:32:C9:BF:C5:BC:1C:D2:8F:E6:F5:7B:0B:39:F4:D8:67:14
- 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 hta-cz.cz's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch hta-cz.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.