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 nihon-it.com

Valid
Issued by (CA)
GlobalSign nv-sa
Subject
www.nihon-it.com
Valid from
Nov 3, 2025
Valid until
Nov 3, 2026 (40 days remaining)
Public key
RSA 2048-bit
Serial
01F67B3BAAC82246E265F44E19C7A0AC
SHA-256 fingerprint
27:39:24:4B:8C:08:9B:48:4A:57:F5:5A:DC:BA:07:C9:16:38:B8:8A:13:B3:CD:84:44:5B:D9:9D:9A:7A:A7:50
Chain
GlobalSign Atlas R3 AlphaSSL CA 2025 Q4 → GlobalSign
Subject Alternative Names (2)
nihon-it.com, www.nihon-it.com

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 Sep 21, 2026.

Never get surprised by nihon-it.com's certificate expiring

This is today's certificate. Turn on monitoring and we'll watch nihon-it.com 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.

Monitor this certificate free

Free for your first domain: uptime, DNS, and certificate together. No credit card.