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 miyagino-gyo-sei.com

Valid
Issued by (CA)
Google Trust Services
Subject
miyagino-gyo-sei.com
Valid from
Oct 30, 2026
Valid until
Jan 28, 2027 (75 days remaining)
Public key
EC 256-bit
Serial
B6AD03139222591B0E6E0C8E5EFD7917
SHA-256 fingerprint
88:A4:47:AD:F6:EE:B0:AD:F1:2D:E7:93:35:F9:0D:2F:4B:FD:05:38:DA:B1:A9:B6:60:09:A9:E6:20:18:19:50
Chain
WE1 → GTS Root R4
Subject Alternative Names (2)
*.miyagino-gyo-sei.com, miyagino-gyo-sei.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 4, 2026.

Never get surprised by miyagino-gyo-sei.com's certificate expiring

This is today's certificate. Turn on monitoring and we'll watch miyagino-gyo-sei.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.