SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
2-plan.co.kr
SSL/TLS Certificate
SSL/TLS Certificate for 2-plan.co.kr
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- 2-plan.co.kr
- Valid from
- Oct 10, 2026
- Valid until
- Jan 8, 2027 (85 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 05749F5A903C6C64DB57764E985A761DAC21
- SHA-256 fingerprint
- D3:8B:AF:61:53:B0:9B:4D:2A:74:24:F4:9A:FF:25:CF:84:A5:43:35:AF:10:6B:27:37:9C:9B:1B:62:10:80:D0
- 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.
We've observed 1 previous certificate for this host. This certificate has been served since Sep 26, 2026.
Never get surprised by 2-plan.co.kr's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch 2-plan.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, 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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