SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
biefen.com
SSL/TLS Certificate
SSL/TLS Certificate for biefen.com
Expired- Issued by (CA)
- Let's Encrypt
- Subject
- bixia66.org
- Valid from
- Sep 19, 2025
- Valid until
- Dec 18, 2025 (expired 225 days ago)
- Public key
- RSA 2048-bit
- Serial
- 05FECA134BE9BC44A93AE4EAE19E13333BDA
- SHA-256 fingerprint
- 2D:47:B2:A5:B9:2D:11:36:E8:13:0C:B1:3A:D8:4B:46:2C:16:DE:04:DA:18:6C:3C:BE:69:D9:6D:8E:EC:55:B9
- Chain
- R12 → 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
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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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