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 akonta-ostrava.cz

Valid
Issued by (CA)
Actalis S.p.A.
Subject
*.akonta-ostrava.cz
Valid from
Oct 17, 2026
Valid until
May 4, 2027 (182 days remaining)
Public key
RSA 2048-bit
Serial
014B99D182445D67603EAA6C510F7556
SHA-256 fingerprint
36:9A:28:1E:01:80:20:93:41:9E:05:0D:24:10:20:C7:6E:C5:6B:1D:20:15:C0:59:3A:63:51:E7:42:F3:00:3C
Chain
Actalis Domain Validated TLS Server RSA CA 2025 → Actalis TLS Server RSA Root CA 2025 → Actalis Authentication Root CA
Subject Alternative Names (2)
*.akonta-ostrava.cz, akonta-ostrava.cz

Certificate Authority Authorization (CAA)

No CAA policy is published for this domain — any certificate authority may issue for it.

Never get surprised by akonta-ostrava.cz's certificate expiring

This is today's certificate. Turn on monitoring and we'll watch akonta-ostrava.cz continuously, notifying you the moment anything moves across all three signals:

Certificate monitor showing the issuer, expiry date, chain status, fingerprint, covered names, and a history of a rotation and an expiry warning

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.

Monitor this certificate free

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