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 kodomonotomo-ten.com

Valid
Issued by (CA)
Nijimo, Inc.
Subject
kodomonotomo-ten.com
Valid from
Sep 28, 2026
Valid until
Dec 27, 2026 (44 days remaining)
Public key
EC 256-bit
Serial
C088E4D47474D60223B3A9ECE1AEC417
SHA-256 fingerprint
B6:4D:3C:6D:23:06:9D:3F:56:40:D0:1D:F3:5A:B4:B7:98:35:12:7C:14:76:63:11:CC:EF:B1:C7:58:47:CA:D9
Chain
FujiSSL ECC Domain Validation Secure Server CA 2 → Sectigo Public Server Authentication Root E46 → USERTrust ECC Certification Authority
Subject Alternative Names (1)
kodomonotomo-ten.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 30, 2026.

Never get surprised by kodomonotomo-ten.com's certificate expiring

This is today's certificate. Turn on monitoring and we'll watch kodomonotomo-ten.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.