SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
daiko-printing.co.jp
SSL/TLS Certificate
SSL/TLS Certificate for daiko-printing.co.jp
Valid- Issued by (CA)
- Japan Registry Services Co., Ltd.
- Subject
- daiko-printing.co.jp
- Valid from
- Aug 4, 2026
- Valid until
- Oct 31, 2026 (78 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 294C4CC995F320088D0DC59388272A8F
- SHA-256 fingerprint
- 1E:45:89:53:86:C5:7D:E7:75:FD:46:D6:C5:2B:96:25:D4:F9:E1:FA:E7:DE:83:75:C0:41:04:D6:D5:96:ED:D2
- Chain
- JPRS DV RSA CA 2024 G1 → SECOM TLS RSA Root CA 2024
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
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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, 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.
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