SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
SSL/TLS Certificate for da-ni.ch
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- da-ni.ch
- Valid from
- Aug 1, 2026
- Valid until
- Oct 30, 2026 (56 days remaining)
- Public key
- RSA 4096-bit
- Serial
- 059C65AD2841B462D320C8CC416B63D5B106
- SHA-256 fingerprint
- 5A:43:17:B1:26:6D:18:56:73:47:47:1A:56:58:85:11:F0:0A:FF:65:72:65:5C:4A:04:A0:17:0C:82:2E:F1:4E
- Chain
- YR2 → 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 da-ni.ch's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch da-ni.ch 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.