SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
o-gane.co.jp
SSL/TLS Certificate
SSL/TLS Certificate for o-gane.co.jp
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- o-gane.co.jp
- Valid from
- Jun 21, 2026
- Valid until
- Sep 19, 2026 (42 days remaining)
- Public key
- EC 256-bit
- Serial
- 05D8EE0611DC9B0E9547482822E5FED3D6B8
- SHA-256 fingerprint
- 72:86:02:75:2F:7D:C7:71:4E:41:1A:D7:37:B0:F3:DC:FD:1F:4A:22:F5:F1:C0:2B:2A:79:2A:83:41:24:99:75
- Chain
- YE2 → Root YE → ISRG Root X2 → 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-gane.co.jp's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch o-gane.co.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, 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.
Free for your first domain: uptime, DNS, and certificate together. No credit card.