SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
ktcm.ac.th
SSL/TLS Certificate
SSL/TLS Certificate for ktcm.ac.th
Hostname mismatch- Issued by (CA)
- Let's Encrypt
- Subject
- dg0033ns1.dragonhispeed.com
- Valid from
- May 25, 2026
- Valid until
- Aug 23, 2026 (29 days remaining)
- Public key
- EC 384-bit
- Serial
- 06060AC0E2751F719E636E69F14378415B18
- SHA-256 fingerprint
- 11:21:7D:EE:32:D4:96:53:97:CA:99:4A:71:07:7B:3E:E3:0C:6A:43:DA:6B:B9:5C:A6:8A:F9:C8:50:9D:95:13
- Chain
- E7 → 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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