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 cncp.eu
Expired- Issued by (CA)
- Let's Encrypt
- Subject
- cncp.eu
- Valid from
- Sep 18, 2022
- Valid until
- Dec 17, 2022 (expired 1366 days ago)
- Public key
- RSA 4096-bit
- Serial
- 042984A61CDF800E460E1DDF03E2C2B363A4
- SHA-256 fingerprint
- 28:71:B5:57:63:FF:1D:FB:0A:87:B4:FD:86:33:FB:EB:68:9D:26:FC:95:3E:F5:B1:A4:15:3C:93:2E:96:C0:54
- Chain
- R3 → 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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