SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
3g114.co.kr
SSL/TLS Certificate
SSL/TLS Certificate for 3g114.co.kr
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- 3g114.co.kr
- Valid from
- Oct 4, 2026
- Valid until
- Jan 2, 2027 (61 days remaining)
- Public key
- RSA 4096-bit
- Serial
- 065A6DA7BCB95445077DC9E7A1DC67F9DF3A
- SHA-256 fingerprint
- 63:C1:17:C2:74:50:06:C2:93:55:BA:77:DA:79:0E:AE:AA:A0:F5:E2:81:EE:17:53:76:99:93:78:00:B9:70:91
- 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 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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