SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
SSL/TLS Certificate for k-pr.jp
Expiring soon- Issued by (CA)
- Let's Encrypt
- Subject
- www.k-pr.jp
- Valid from
- May 24, 2026
- Valid until
- Aug 22, 2026 (15 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 06AECBA0D7CC7BC4DDF1DD5738268BC78129
- SHA-256 fingerprint
- EC:03:5B:15:D7:1F:FA:DE:A8:B1:87:23:5C:E4:62:A1:79:44:71:E0:E5:51:73:26:CD:77:9C:EC:62:35:A0:0B
- 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 k-pr.jp's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch k-pr.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.