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 df-dachtechnik.de

Valid
Issued by (CA)
ZeroSSL GmbH
Subject
df-dachtechnik.de
Valid from
Sep 12, 2026
Valid until
Dec 11, 2026 (85 days remaining)
Public key
EC 256-bit
Serial
46776B8AF72B9C17BCD8806D4A12DD83
SHA-256 fingerprint
29:53:12:DE:E0:43:28:C7:CD:66:1E:A3:4F:52:90:E2:5E:A9:52:66:A6:67:93:E6:F1:DE:E6:82:2E:EF:CB:93
Chain
ZeroSSL ECC DV SSL CA 2 → Sectigo Public Server Authentication Root E46 → USERTrust ECC Certification Authority
Subject Alternative Names (1)
df-dachtechnik.de

Certificate Authority Authorization (CAA)

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

Never get surprised by df-dachtechnik.de's certificate expiring

This is today's certificate. Turn on monitoring and we'll watch df-dachtechnik.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.