SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
dr-mecha.co.kr
SSL/TLS Certificate
SSL/TLS Certificate for dr-mecha.co.kr
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- dr-mecha.co.kr
- Valid from
- Oct 31, 2026
- Valid until
- Jan 29, 2027 (76 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 05C5054D13D3DC5AAB9A52D98EA56AF2BDF0
- SHA-256 fingerprint
- 7F:08:ED:D0:84:98:20:2C:D3:6C:DD:8D:D6:8F:BA:4A:7F:DC:E6:B7:34:73:5A:72:6D:4D:FB:2A:67:27:0B:E4
- 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.
This certificate has been served since Nov 6, 2026.
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Uptime
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DNS changes
We watch NS, MX, CAA, CNAME, TXT 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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