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 mizar-holding.com

Valid
Issued by (CA)
ZeroSSL GmbH
Subject
mizar-holding.com
Valid from
Nov 7, 2026
Valid until
Feb 5, 2027 (86 days remaining)
Public key
EC 384-bit
Serial
0DD77A5C94F733E1CCAC02C253B1DF26
SHA-256 fingerprint
18:E3:DB:36:3F:08:9E:03:5C:6B:63:7F:34:9D:2C:78:68:98:1A:7F:CE:5C:B5:DC:0E:8E:86:72:D3:CE:43:A0
Chain
ZeroSSL ECC DV SSL CA 2 → Sectigo Public Server Authentication Root E46 → USERTrust ECC Certification Authority
Subject Alternative Names (1)
mizar-holding.com

Certificate Authority Authorization (CAA)

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

We've observed 2 previous certificates for this host. This certificate has been served since Oct 25, 2026.

Never get surprised by mizar-holding.com's certificate expiring

This is today's certificate. Turn on monitoring and we'll watch mizar-holding.com 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.