SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
o-minami.jp
SSL/TLS Certificate
SSL/TLS Certificate for o-minami.jp
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- o-minami.jp
- Valid from
- Oct 28, 2026
- Valid until
- Jan 26, 2027 (76 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 0544C55E263859520CE124A7B17F30AD51BA
- SHA-256 fingerprint
- 95:A6:77:85:E7:17:65:71:0B:5E:8F:67:F0:2A:68:CC:D3:D1:F6:E3:A6:5B:72:84:6C:23:22:B8:49:0B:E4:32
- 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.
Never get surprised by o-minami.jp's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch o-minami.jp 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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