SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
repair-tech.co.jp
SSL/TLS Certificate
SSL/TLS Certificate for repair-tech.co.jp
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- repair-tech.co.jp
- Valid from
- Jul 13, 2026
- Valid until
- Oct 11, 2026 (57 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 051D9C9ED5FAF528B0D3D3F316962036084B
- SHA-256 fingerprint
- 22:6E:78:01:38:A1:C7:0A:95:97:89:50:3B:F6:5E:44:F5:78:4A:AB:34:EB:A2:55:08:55:F6:F5:81:19:51:A2
- Chain
- YR1 → Root YR → 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 repair-tech.co.jp's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch repair-tech.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.