SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
du-selbst.ch
SSL/TLS Certificate
SSL/TLS Certificate for du-selbst.ch
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- du-selbst.ch
- Valid from
- Sep 24, 2026
- Valid until
- Dec 23, 2026 (46 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 06F0FB7A22435B7A4C1DA158012371653696
- SHA-256 fingerprint
- 11:C9:4F:E1:3C:5A:5B:C5:10:88:86:48:7C:13:99:16:AB:7E:8E:95:54:8E:83:8B:2A:48:DF:FD:7D:C2:4C:3A
- 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 du-selbst.ch's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch du-selbst.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, CNAME, TXT 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.