SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
sits-group.uk
SSL/TLS Certificate
SSL/TLS Certificate for sits-group.uk
Expired- Issued by (CA)
- Sectigo Limited
- Subject
- sits-group.uk
- Valid from
- May 17, 2023
- Valid until
- Aug 15, 2023 (expired 1098 days ago)
- Public key
- RSA 2048-bit
- Serial
- 7421347649ED24F1C0632DDC1C6B4C77
- SHA-256 fingerprint
- 17:9A:FB:77:BD:EB:35:F4:22:88:B3:D9:86:F5:CB:42:58:00:4E:B6:CE:BD:98:43:2D:59:C1:E1:29:2C:F0:88
- Chain
- Sectigo RSA Domain Validation Secure Server CA → USERTrust RSA Certification Authority
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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