SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
k-tech.jp
SSL/TLS Certificate
SSL/TLS Certificate for k-tech.jp
Hostname mismatch- Issued by (CA)
- GlobalSign nv-sa
- Subject
- *.onamaeweb.jp
- Valid from
- Dec 17, 2025
- Valid until
- Jan 18, 2027 (179 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 51AEFBE7254AC72614CFE14E
- SHA-256 fingerprint
- FB:07:D7:2E:4D:3C:61:D9:AF:3C:9F:9E:D3:AE:4D:B4:D7:3D:28:C3:84:DC:8E:B1:C9:43:2A:82:D9:17:56:AF
- Chain
- GlobalSign GCC R3 DV TLS CA 2020 → GlobalSign
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
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This is today's certificate. Turn on monitoring and we'll watch k-tech.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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