SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
kron.ac.th
SSL/TLS Certificate
SSL/TLS Certificate for kron.ac.th
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- 43971487-94-20200915085108.webstarterz.com
- Valid from
- Jul 12, 2026
- Valid until
- Oct 10, 2026 (80 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 053A04C561299AE67796B44B2E2FCD8A5B21
- SHA-256 fingerprint
- BD:00:AB:44:AF:50:A1:6A:00:BB:1F:19:EE:4D:EA:91:BA:54:76:78:23:BE:BA:24:0C:57:4A:E9:32:C4:2A:80
- Chain
- YR2 → Root YR → 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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