SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
west-lock.co.jp
SSL/TLS Certificate
SSL/TLS Certificate for west-lock.co.jp
Valid- Issued by (CA)
- DigiCert Inc
- Subject
- west-lock.co.jp
- Valid from
- Sep 3, 2025
- Valid until
- Oct 3, 2026 (52 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 0F33F5EE1CF2BBCA37BF64E4ADD9E17F
- SHA-256 fingerprint
- 9B:99:14:4C:65:0C:EA:4A:6C:D6:5F:F2:12:FE:16:18:DB:54:46:56:33:5D:70:95:2A:98:89:95:27:71:68:9C
- 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.
Never get surprised by west-lock.co.jp's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch west-lock.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.
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