SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
itsec-ds.de
SSL/TLS Certificate
SSL/TLS Certificate for itsec-ds.de
Valid- Issued by (CA)
- Sectigo Limited
- Subject
- *.itsec-ds.de
- Valid from
- Feb 3, 2026
- Valid until
- Feb 24, 2027 (156 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 695DE2D3F3408E6C71D490B08D600FAF
- SHA-256 fingerprint
- C3:97:E7:B9:A9:15:17:31:40:53:48:AF:0A:75:1D:57:86:1B:CD:7B:C5:C2:09:10:42:5C:98:0C:07:21:B5:BE
- Chain
- Sectigo Public Server Authentication CA DV R36 → Sectigo Public Server Authentication Root R46 → USERTrust RSA Certification Authority
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
Never get surprised by itsec-ds.de's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch itsec-ds.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.