SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
btnschool.ac.th
SSL/TLS Certificate
SSL/TLS Certificate for btnschool.ac.th
Expired- Issued by (CA)
- Let's Encrypt
- Subject
- *.thai.ac
- Valid from
- Jun 30, 2026
- Valid until
- Sep 28, 2026 (expired 6 days ago)
- Public key
- RSA 4096-bit
- Serial
- 0564AA2BE3073C61E157CCF88F92D2626FD7
- SHA-256 fingerprint
- 71:A3:89:03:CC:5E:57:51:12:74:4D:96:74:C9:F5:D6:CD:31:F3:96:27:80:20:81:AE:B9:8F:77:65:B3:18:CB
- 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 9, 2026.
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Uptime
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DNS changes
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TLS certificate
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