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 parkourschool.cz

Valid
Issued by (CA)
Let's Encrypt
Subject
parkourschool.cz
Valid from
Jun 30, 2026
Valid until
Sep 28, 2026 (58 days remaining)
Public key
RSA 2048-bit
Serial
05D7A474BB3B08298B687F5BBC19C7A0CD9E
SHA-256 fingerprint
77:C2:59:D1:A2:6F:6F:E4:13:E0:75:54:BD:1C:35:BB:B6:40:04:F8:59:77:71:E1:E6:D6:F7:6E:43:4A:C9:A8
Chain
YR1 → Root YR → ISRG Root X1
Subject Alternative Names (2)
parkourschool.cz, www.parkourschool.cz

Certificate Authority Authorization (CAA)

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

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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.

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