SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
miyata-con.jp
SSL/TLS Certificate
SSL/TLS Certificate for miyata-con.jp
Hostname mismatch- Issued by (CA)
- Nijimo, Inc.
- Subject
- *.asakurasoft7.jp
- Valid from
- Oct 5, 2026
- Valid until
- Apr 21, 2027 (167 days remaining)
- Public key
- RSA 2048-bit
- Serial
- A97BBDDDA8A520D30D26CD7A8515756D
- SHA-256 fingerprint
- 75:F5:2B:6D:8A:C9:CD:EF:5C:15:27:84:2E:17:D3:33:95:B3:C5:98:7E:28:22:5F:F1:94:8E:49:60:71:48:3A
- Chain
- FujiSSL RSA Domain Validation Secure Server CA 2 → Sectigo Public Server Authentication Root R46 → USERTrust RSA Certification Authority
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 Oct 30, 2026.
Never get surprised by miyata-con.jp's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch miyata-con.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.
Free for your first domain: uptime, DNS, and certificate together. No credit card.