SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
hwk-architekten.de
SSL/TLS Certificate
SSL/TLS Certificate for hwk-architekten.de
Valid- Issued by (CA)
- Sectigo Limited
- Subject
- *.hwk-architekten.de
- Valid from
- Oct 2, 2025
- Valid until
- Oct 16, 2026 (60 days remaining)
- Public key
- RSA 2048-bit
- Serial
- A4CEF562947390D75FE36EFBC414EFD2
- SHA-256 fingerprint
- BD:74:FF:DD:A7:DB:B0:61:21:6E:BD:55:A2:01:E5:2B:DD:19:78:BA:1D:3D:F0:FB:CE:D9:99:55:D0:22:9C:9E
- 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 12, 2026.
Never get surprised by hwk-architekten.de's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch hwk-architekten.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.