SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
net-pen.net
SSL/TLS Certificate
SSL/TLS Certificate for net-pen.net
Expired- Issued by (CA)
- Let's Encrypt
- Subject
- net-pen.net
- Valid from
- Jun 26, 2026
- Valid until
- Sep 24, 2026 (expired 12 days ago)
- Public key
- RSA 2048-bit
- Serial
- 053A2150EE4611C6FA4792129EF75A5D3506
- SHA-256 fingerprint
- 53:85:40:B1:EA:AD:20:B1:45:F0:48:1E:D0:47:35:D0:0F:29:3B:84:4B:28:57:A4:7C:F7:05:BD:F8:50:A0:47
- 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.
This certificate has been served since Sep 30, 2026.
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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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