SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
dieko-bau.de
SSL/TLS Certificate
SSL/TLS Certificate for dieko-bau.de
Valid- Issued by (CA)
- ZeroSSL GmbH
- Subject
- dieko-bau.de
- Valid from
- Sep 12, 2026
- Valid until
- Dec 11, 2026 (62 days remaining)
- Public key
- EC 256-bit
- Serial
- CB0C943DC261B11DE19745B3526892FF
- SHA-256 fingerprint
- C6:2D:89:11:54:86:60:48:35:24:C7:BB:F6:44:6B:17:35:AB:F9:37:CB:25:BF:7C:40:22:F4:51:22:E1:3F:48
- Chain
- ZeroSSL ECC DV SSL CA 2 → Sectigo Public Server Authentication Root E46 → USERTrust ECC Certification Authority
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
This certificate has been served since Sep 18, 2026.
Never get surprised by dieko-bau.de's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch dieko-bau.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.
Free for your first domain: uptime, DNS, and certificate together. No credit card.