SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
ef-engineering.co.uk
SSL/TLS Certificate
SSL/TLS Certificate for ef-engineering.co.uk
Valid- Issued by (CA)
- Sectigo Limited
- Subject
- ef-engineering.co.uk
- Valid from
- Feb 23, 2026
- Valid until
- Feb 23, 2027 (167 days remaining)
- Public key
- RSA 2048-bit
- Serial
- C474D9349B699FBF0FA45C85885EB5CA
- SHA-256 fingerprint
- FE:90:AC:4A:35:5D:01:9F:D3:BB:8E:3C:BF:EC:8C:E0:E7:B2:E1:EA:DA:BA:42:9D:5F:F7:C6:48:C7:CA:B9:5C
- Chain
- Sectigo Public Server Authentication CA DV R36 → 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 8, 2026.
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Uptime
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DNS changes
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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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