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 duka-tech.sk

Expiring soon
Issued by (CA)
Let's Encrypt
Subject
duka-tech.sk
Valid from
Jul 22, 2026
Valid until
Oct 20, 2026 (15 days remaining)
Public key
EC 384-bit
Serial
05F9D1CE978B446A9ED9DA23AD1851A630E6
SHA-256 fingerprint
F4:A0:2F:C6:3A:A0:CD:CD:B2:1F:A7:F2:D8:5C:7D:0B:F4:E3:36:BE:93:48:5D:D8:F4:DD:F4:AB:DB:03:C9:B0
Chain
YE2 → Root YE → ISRG Root X2 → ISRG Root X1
Subject Alternative Names (2)
duka-tech.sk, www.duka-tech.sk

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 Oct 2, 2026.

Never get surprised by duka-tech.sk's certificate expiring

This is today's certificate. Turn on monitoring and we'll watch duka-tech.sk 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.

Monitor this certificate free

Free for your first domain: uptime, DNS, and certificate together. No credit card.