SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
zx-spectrum.cz
SSL/TLS Certificate
SSL/TLS Certificate for zx-spectrum.cz
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- games.speccy.cz
- Valid from
- Jun 7, 2026
- Valid until
- Sep 5, 2026 (44 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 05B6D7AA220DEA9A92D4FF6D6D230B94AE7D
- SHA-256 fingerprint
- FF:C2:DF:03:A2:82:6A:8A:9C:F5:6F:2F:EA:75:44:F0:F3:99:75:A1:B1:0F:45:48:F0:23:B9:80:D6:45:4E:63
- Chain
- YR1 → 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 zx-spectrum.cz's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch zx-spectrum.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.
Free for your first domain: uptime, DNS, and certificate together. No credit card.