SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
settsu-med.or.jp
SSL/TLS Certificate
SSL/TLS Certificate for settsu-med.or.jp
Expiring soon- Issued by (CA)
- Let's Encrypt
- Subject
- settsu-med.or.jp
- Valid from
- May 27, 2026
- Valid until
- Aug 25, 2026 (9 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 06EE423D31967DF842CB953EE6C9F0FC332D
- SHA-256 fingerprint
- 25:EA:55:7B:81:1D:FD:6B:13:B5:9F:BB:9E:EB:39:06:B5:FD:20:EE:98:8C:C3:A0:9B:18:66:7C:B6:3E:7A:BD
- Chain
- R12 → 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 settsu-med.or.jp's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch settsu-med.or.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.