SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
kpk-school.ac.th
SSL/TLS Certificate
SSL/TLS Certificate for kpk-school.ac.th
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- kpk-school.ac.th
- Valid from
- Jul 22, 2026
- Valid until
- Oct 20, 2026 (88 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 0546F9ED293B3ACA0F34168EC34C33BA0D63
- SHA-256 fingerprint
- 5C:45:77:31:0F:C3:3A:94:3B:16:1A:6E:59:0A:C2:D5:9D:EE:91:6E:1D:F9:75:59:C3:59:4E:1E:D4:49:A1:48
- 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.
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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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