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 kajihara-kougyousyo.com

Expired
Issued by (CA)
Japan Registry Services Co., Ltd.
Subject
www.kajihara-kougyousyo.com
Valid from
Nov 20, 2018
Valid until
Nov 30, 2019 (expired 2534 days ago)
Public key
RSA 2048-bit
Serial
37C206C66C6A5629
SHA-256 fingerprint
F9:9B:F4:4E:F1:36:2B:30:E2:79:B4:4A:1A:94:33:4B:4C:CB:AF:02:6F:62:C4:61:B2:1C:F9:4C:2E:47:6C:23
Chain
JPRS Domain Validation Authority - G2
Subject Alternative Names (2)
kajihara-kougyousyo.com, www.kajihara-kougyousyo.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 Oct 11, 2026.

Never get surprised by kajihara-kougyousyo.com's certificate expiring

This is today's certificate. Turn on monitoring and we'll watch kajihara-kougyousyo.com continuously, notifying you the moment anything moves across all three signals:

Certificate monitor showing the issuer, expiry date, chain status, fingerprint, covered names, and a history of a rotation and an expiry warning

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.

Monitor this certificate free

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