SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
c-tec-ndt.de
SSL/TLS Certificate
SSL/TLS Certificate for c-tec-ndt.de
Expiring soon- Issued by (CA)
- Sectigo Limited
- Subject
- c-tec-ndt.de
- Valid from
- Oct 16, 2025
- Valid until
- Nov 6, 2026 (21 days remaining)
- Public key
- RSA 2048-bit
- Serial
- DA398364CE9C5C64ACD259A6A38FCED6
- SHA-256 fingerprint
- F9:CB:A8:79:88:FD:2B:A0:25:02:96:F4:DB:A4:9A:03:C1:92:DD:D8:25:A1:A7:D2:B3:98:E1:F1:53:69:2B:91
- 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.
This certificate has been served since Aug 17, 2026.
Never get surprised by c-tec-ndt.de's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch c-tec-ndt.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.