SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
the12thlion.org
SSL/TLS Certificate
SSL/TLS Certificate for the12thlion.org
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- the12thlion.org
- Valid from
- Jul 19, 2026
- Valid until
- Oct 17, 2026 (38 days remaining)
- Public key
- EC 256-bit
- Serial
- 05B9D8E63AA39493C6C6FBF1F4F48CD9BB3B
- SHA-256 fingerprint
- 38:E2:2E:A9:D0:76:FA:50:3C:6A:DD:58:98:3F:EB:93:2B:7B:93:BA:3E:D0:44:C8:25:7E:C9:15:C3:79:EE:91
- Chain
- YE1 → Root YE → ISRG Root X2 → 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 7, 2026.
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This is today's certificate. Turn on monitoring and we'll watch the12thlion.org continuously, notifying you the moment anything moves across all three signals:
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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