SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
pfister-ag.ch
SSL/TLS Certificate
SSL/TLS Certificate for pfister-ag.ch
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- pfister-ag.ch
- Valid from
- Jul 17, 2026
- Valid until
- Oct 15, 2026 (77 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 05C05D889C1DFF25FB4B5ADF0D5325C0AD21
- SHA-256 fingerprint
- D3:05:0A:D7:26:F2:BB:9D:4A:0C:8E:B5:CA:A8:1C:9D:F6:F3:D9:B0:91:D2:49:E6:54:14:EA:9E:74:83:47:DF
- 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 pfister-ag.ch's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch pfister-ag.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.