SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
folien.com
SSL/TLS Certificate
SSL/TLS Certificate for folien.com
Expired- Issued by (CA)
- Let's Encrypt
- Subject
- folien.com
- Valid from
- Jan 11, 2021
- Valid until
- Apr 11, 2021 (expired 1932 days ago)
- Public key
- RSA 4096-bit
- Serial
- 041141AA9DFF9D88D118A99DFB8D89FC3799
- SHA-256 fingerprint
- 37:0B:30:81:55:A9:CC:7C:33:3D:3E:49:3B:C4:20:AE:B3:CE:1F:A0:07:37:49:1C:D2:9D:CA:E2:66:58:0D:95
- Chain
- R3
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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