SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
npi-opus.com
SSL/TLS Certificate
SSL/TLS Certificate for npi-opus.com
Hostname mismatch- Issued by (CA)
- ZeroSSL GmbH
- Subject
- test.ssnc-today.com
- Valid from
- Jul 30, 2026
- Valid until
- Oct 28, 2026 (46 days remaining)
- Public key
- RSA 2048-bit
- Serial
- ECE73545F81872E665D3FC6911D021C2
- SHA-256 fingerprint
- 63:73:2C:64:54:49:DB:5E:D6:CE:3D:17:A5:39:6F:9E:54:45:2E:04:9E:23:6E:76:57:67:6B:A1:4B:80:F2:75
- Chain
- ZeroSSL RSA DV SSL CA 2 → Sectigo Public Server Authentication Root R46
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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