SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
ohkuma-lc.jp
SSL/TLS Certificate
SSL/TLS Certificate for ohkuma-lc.jp
Valid- Issued by (CA)
- CloudSecure Corporation
- Subject
- www.ohkuma-lc.jp
- Valid from
- Jun 7, 2026
- Valid until
- Dec 22, 2026 (135 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 89C5890793F0E07B00078EE30F337F3D
- SHA-256 fingerprint
- BC:D9:C1:28:7D:E8:C6:DA:20:8C:74:1F:5C:3C:83:16:D4:9F:AA:ED:F7:91:0E:FF:10:3E:B2:67:53:D7:FB:E0
- Chain
- CloudSecure RSA Domain Validation Secure Server CA 3 → Sectigo Public Server Authentication Root R46
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
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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, 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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