SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
jr-central.co.jp
SSL/TLS Certificate
SSL/TLS Certificate for jr-central.co.jp
Valid- Issued by (CA)
- DigiCert Inc
- Subject
- jr-central.co.jp
- Valid from
- Dec 17, 2025
- Valid until
- Dec 19, 2026 (129 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 08412CF6C2184946EB2EAAA4A080C695
- SHA-256 fingerprint
- 5E:05:A8:57:BC:24:48:18:F1:20:D2:84:35:D4:9A:D6:F1:EA:27:56:E0:E6:5C:1E:77:77:71:90:19:40:13:8F
- Chain
- GeoTrust TLS RSA CA G1 → DigiCert Global Root G2
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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