SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
mj-media.co.kr
SSL/TLS Certificate
SSL/TLS Certificate for mj-media.co.kr
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- mj-media.co.kr
- Valid from
- Oct 3, 2026
- Valid until
- Jan 1, 2027 (59 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 0543B3F613A3619C5621E8CF26EEE9730834
- SHA-256 fingerprint
- 1D:3E:82:A5:01:1F:C7:39:A7:D0:82:A0:1B:4D:98:17:FA:AA:A0:A1:7C:50:7E:38:73:BD:52:36:61:FD:2C:C2
- 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 Oct 21, 2026.
Never get surprised by mj-media.co.kr's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch mj-media.co.kr continuously, notifying you the moment anything moves across all three signals:
Uptime
We visit the site from multiple regions worldwide and email you within minutes if it goes down, with a per-region breakdown so a real outage stands out from a regional blip.
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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