SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
patent-introductions.com
SSL/TLS Certificate
SSL/TLS Certificate for patent-introductions.com
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- patent-introductions.com
- Valid from
- Sep 28, 2026
- Valid until
- Dec 27, 2026 (70 days remaining)
- Public key
- EC 256-bit
- Serial
- 06A6DE35BA328BEF941258D6C25121CC1B40
- SHA-256 fingerprint
- 20:9F:9B:28:7C:25:BE:1B:DD:9D:AF:E6:1E:45:BF:FF:34:49:D2:3C:5B:E5:CA:3E:09:3C:0F:BD:40:6F:44:E7
- 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 Oct 7, 2026.
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DNS changes
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TLS certificate
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