SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
jeongbu-air.com
SSL/TLS Certificate
SSL/TLS Certificate for jeongbu-air.com
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- jeongbu-air.com
- Valid from
- Oct 13, 2026
- Valid until
- Jan 11, 2027 (65 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 066F565CB63A33DD50C3CEF0E7573EA03C24
- SHA-256 fingerprint
- 1B:31:1D:4E:89:DD:B1:F7:1D:60:55:18:3F:BC:DB:E8:07:A5:7E:AF:29:41:DB:62:AB:A4:48:48:9F:79:43:27
- 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 Nov 6, 2026.
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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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