SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
showa-jisho.com
SSL/TLS Certificate
SSL/TLS Certificate for showa-jisho.com
Valid- Issued by (CA)
- Nijimo, Inc.
- Subject
- www.showa-jisho.com
- Valid from
- Aug 3, 2026
- Valid until
- Feb 17, 2027 (122 days remaining)
- Public key
- RSA 2048-bit
- Serial
- CA012F1991BF040FBC8903F68A437724
- SHA-256 fingerprint
- BB:6B:33:48:DC:AA:77:93:05:64:0B:27:27:5D:05:30:55:A6:3A:09:E6:D4:CA:79:6B:DE:98:B5:50:91:F6:DD
- 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 Sep 22, 2026.
Never get surprised by showa-jisho.com's certificate expiring
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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.
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