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 oeko-bau-gmbh.de

Valid
Issued by (CA)
Sectigo Limited
Subject
*.oeko-bau-gmbh.de
Valid from
Oct 8, 2025
Valid until
Oct 8, 2026 (60 days remaining)
Public key
RSA 2048-bit
Serial
DC5E996E01C7B79678DF822A513A0605
SHA-256 fingerprint
F0:57:9A:3F:4C:83:79:4E:55:5E:7A:70:D1:F3:B2:67:48:E3:8E:FD:9E:10:80:47:D2:1F:59:2A:CE:61:2F:5B
Chain
Sectigo Public Server Authentication CA DV R36 → Sectigo Public Server Authentication Root R46 → USERTrust RSA Certification Authority
Subject Alternative Names (2)
*.oeko-bau-gmbh.de, oeko-bau-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 oeko-bau-gmbh.de's certificate expiring

This is today's certificate. Turn on monitoring and we'll watch oeko-bau-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.