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 zimtec-gmbh.de

Valid
Issued by (CA)
Sectigo Limited
Subject
*.zimtec-gmbh.de
Valid from
Mar 18, 2026
Valid until
Sep 28, 2026 (50 days remaining)
Public key
RSA 2048-bit
Serial
D4AA22C13AE59D913FC5990C96383B89
SHA-256 fingerprint
74:3A:86:3D:76:48:E2:DA:A7:EA:CF:0C:5F:BF:72:97:09:21:78:D5:D5:42:7E:5A:08:8A:60:B6:70:C6:CC:18
Chain
Sectigo Public Server Authentication CA DV R36 → Sectigo Public Server Authentication Root R46 → USERTrust RSA Certification Authority
Subject Alternative Names (2)
*.zimtec-gmbh.de, zimtec-gmbh.de

Certificate Authority Authorization (CAA)

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

Never get surprised by zimtec-gmbh.de's certificate expiring

This is today's certificate. Turn on monitoring and we'll watch zimtec-gmbh.de 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.