SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
data-office.de
SSL/TLS Certificate
SSL/TLS Certificate for data-office.de
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- officesystems.de
- Valid from
- Sep 23, 2026
- Valid until
- Dec 22, 2026 (87 days remaining)
- Public key
- RSA 4096-bit
- Serial
- 05469FEDBFB13A7A6817FEDC408F9D61DB0C
- SHA-256 fingerprint
- 31:59:28:FF:B9:1C:F9:5F:98:00:A6:5D:31:EA:1C:8F:90:1E:A9:31:84:E3:55:58:A6:27:DE:06:2D:D2:96:3A
- Chain
- YR1 → Root YR → ISRG Root X1
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
Never get surprised by data-office.de's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch data-office.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.
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