SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
frei-patent.com
SSL/TLS Certificate
SSL/TLS Certificate for frei-patent.com
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- frei-patent.com
- Valid from
- Jun 14, 2026
- Valid until
- Sep 12, 2026 (29 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 05D9A2D4A03FF35857753C6A7AEA4F6FE2FC
- SHA-256 fingerprint
- 5D:95:AA:E5:ED:6A:60:FF:C5:AE:AE:B8:76:AE:F7:1F:A6:37:2A:0B:7E:54:1E:59:6A:2E:08:04:96:6C:49:33
- 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
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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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