SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
tenku-farm.co.jp
SSL/TLS Certificate
SSL/TLS Certificate for tenku-farm.co.jp
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- www.tenku-farm.co.jp
- Valid from
- Oct 7, 2026
- Valid until
- Jan 5, 2027 (51 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 053534754256F52107C77E48ABF8465B88CC
- SHA-256 fingerprint
- 6F:AC:EA:83:B3:50:EF:47:1E:40:79:A8:21:A4:6C:84:53:BF:89:E1:33:C8:94:51:12:4F:09:5A:26:5C:25:F8
- 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.
This certificate has been served since Oct 9, 2026.
Never get surprised by tenku-farm.co.jp's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch tenku-farm.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, 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.