SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
lucerne-impact.org
SSL/TLS Certificate
SSL/TLS Certificate for lucerne-impact.org
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- lucerneimpact.ch
- Valid from
- Jul 31, 2026
- Valid until
- Oct 29, 2026 (52 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 068818D272091A3D34BF49A1E34831566342
- SHA-256 fingerprint
- 8D:CB:88:17:82:5F:77:DF:3B:29:79:5E:2F:5C:09:74:42:B3:8F:10:6D:89:9A:05:27:28:3A:F8:49:2A:F4:C8
- 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.
This certificate has been served since Aug 5, 2026.
Never get surprised by lucerne-impact.org's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch lucerne-impact.org 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.