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.com
SSL/TLS Certificate
SSL/TLS Certificate for pfister-ag.com
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- pfister-ag.com
- Valid from
- Sep 21, 2026
- Valid until
- Dec 20, 2026 (71 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 05AF7B784C12DF113C697E9BE5A22CE7D7F5
- SHA-256 fingerprint
- 22:FB:1E:9B:45:3A:62:4C:E4:68:EE:85:09:DF:D5:1E:72:74:18:70:81:82:35:6A:3F:B2:6A:72:2A:DC:50:81
- 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.
This certificate has been served since Oct 3, 2026.
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Uptime
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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.
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