SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
vastu-architecture.com
SSL/TLS Certificate
SSL/TLS Certificate for vastu-architecture.com
Hostname mismatch- Issued by (CA)
- Let's Encrypt
- Subject
- vastu-architektur.ch
- Valid from
- Jun 16, 2026
- Valid until
- Sep 14, 2026 (52 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 053C329A9ECA0B6CA63439BE8A0CCFDA4AB0
- SHA-256 fingerprint
- CB:BA:B9:90:7A:36:2C:6B:29:F4:F7:D3:D3:82:CF:A1:28:28:6A:06:AE:35:84:CB:CE:70:F4:A7:85:48:83:D6
- 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 vastu-architecture.com's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch vastu-architecture.com 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.