SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
sn-architektur.de
SSL/TLS Certificate
SSL/TLS Certificate for sn-architektur.de
Valid- Issued by (CA)
- Sectigo Limited
- Subject
- *.sn-architektur.de
- Valid from
- Mar 26, 2026
- Valid until
- Oct 6, 2026 (29 days remaining)
- Public key
- RSA 2048-bit
- Serial
- FBD7ECCDC0C937A0A18E6A1F56E122D3
- SHA-256 fingerprint
- CC:96:0E:C4:79:DE:2E:C7:DA:1A:10:39:8A:2A:9B:50:D6:89:E0:52:A9:E7:F4:CF:B4:A6:4C:48:BC:60:65:14
- 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 sn-architektur.de's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch sn-architektur.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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