SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
pt-hokkaido.jp
SSL/TLS Certificate
SSL/TLS Certificate for pt-hokkaido.jp
Valid- Issued by (CA)
- Nijimo, Inc.
- Subject
- www.pt-hokkaido.jp
- Valid from
- Nov 12, 2026
- Valid until
- May 29, 2027 (197 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 209C219C9FC4C1AC4737DE42D67E4CA2
- SHA-256 fingerprint
- 12:3F:EC:7F:67:EB:63:61:81:A0:EA:C0:57:75:5F:11:D5:1E:94:12:23:08:92:CA:5B:51:84:78:D3:3D:3A:33
- Chain
- FujiSSL RSA Domain Validation Secure Server CA 2 → Sectigo Public Server Authentication Root R46 → USERTrust RSA Certification Authority
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 Aug 7, 2026.
Never get surprised by pt-hokkaido.jp's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch pt-hokkaido.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.