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 ngserver.cz

Valid
Issued by (CA)
Alpiro s.r.o.
Subject
www.ngserver.cz
Valid from
Aug 27, 2025
Valid until
Aug 27, 2026 (27 days remaining)
Public key
RSA 2048-bit
Serial
0DE5DED28F18F0E5887586D4F5C83109
SHA-256 fingerprint
D8:52:C7:85:6A:23:11:F3:F3:71:96:1B:61:DE:25:C9:2B:75:C5:6C:D1:BB:36:7F:75:FB:E1:02:DC:9E:0C:EE
Chain
Alpiro RSA DV SSL CA 2 → Sectigo Public Server Authentication Root R46 → USERTrust RSA Certification Authority
Subject Alternative Names (2)
ngserver.cz, www.ngserver.cz

Certificate Authority Authorization (CAA)

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

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This is today's certificate. Turn on monitoring and we'll watch ngserver.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.

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