SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
fehmer-gmbh.de
SSL/TLS Certificate
SSL/TLS Certificate for fehmer-gmbh.de
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- fehmer-gmbh.de
- Valid from
- Jul 30, 2026
- Valid until
- Oct 28, 2026 (71 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 0670160DA2E26760446952D3631C5F496DBC
- SHA-256 fingerprint
- 6F:4E:D3:9E:14:7D:E5:9C:25:26:1E:1B:23:8C:26:E0:01:62:5E:CC:E0:3C:4F:38:41:FD:4A:AF:71:A1:07:5A
- 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.
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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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