SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
niji-architects.com
SSL/TLS Certificate
SSL/TLS Certificate for niji-architects.com
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- niji-architects.com
- Valid from
- Sep 14, 2026
- Valid until
- Dec 13, 2026 (75 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 059305F10E43EFE415DAFDD823BF691805DE
- SHA-256 fingerprint
- 20:D0:D3:65:3B:72:A1:55:04:1A:01:A7:06:9C:D6:BD:60:77:F7:C4:9E:64:F5:19:AA:E6:90:1F:FB:2E:27:D8
- Chain
- YR2 → Root YR → ISRG Root X1
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
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Uptime
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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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