SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
zehnder-filtershop.com
SSL/TLS Certificate
SSL/TLS Certificate for zehnder-filtershop.com
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- be.zehnder-filtershop.com
- Valid from
- Oct 5, 2026
- Valid until
- Jan 3, 2027 (51 days remaining)
- Public key
- RSA 4096-bit
- Serial
- 052E2DE2A33FAFE1505C6783E3C2E4FCBEA2
- SHA-256 fingerprint
- 5D:63:99:AF:24:EA:06:A3:D7:41:72:79:75:79:FC:C9:31:00:B2:02:DE:8D:29:BD:B5:41:C7:E2:5B:08:E2:E0
- 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.
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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.
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