SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
ks-tech.pl
SSL/TLS Certificate
SSL/TLS Certificate for ks-tech.pl
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- nowytarg.edu.pl
- Valid from
- Aug 20, 2026
- Valid until
- Nov 18, 2026 (43 days remaining)
- Public key
- EC 256-bit
- Serial
- 05DF6E1183DF02B10414DE440365C11C1743
- SHA-256 fingerprint
- 0D:05:51:CF:9F:EA:23:77:B3:5B:DD:1F:8B:4E:A2:C0:A7:7E:5F:37:FA:78:31:41:DD:82:57:2A:EB:1E:4F:3F
- 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 Sep 4, 2026.
Never get surprised by ks-tech.pl's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch ks-tech.pl 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.