SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
truro-penwith.ac.uk
SSL/TLS Certificate
SSL/TLS Certificate for truro-penwith.ac.uk
Valid- Issued by (CA)
- Google Trust Services
- Subject
- truro-penwith.ac.uk
- Valid from
- Sep 29, 2026
- Valid until
- Dec 28, 2026 (48 days remaining)
- Public key
- EC 256-bit
- Serial
- F13D7431039C43D513C6A5E75BD618CC
- SHA-256 fingerprint
- 75:60:6E:4E:8B:A7:6F:2D:F6:8E:E1:6F:F8:F3:F4:D8:C0:8B:A7:43:4E:3E:16:D6:B1:41:A4:36:1B:BE:A9:6A
- Chain
- WE1 → GTS Root R4
Certificate Authority Authorization (CAA)
The serving CA (Google Trust Services) is authorized by this domain's CAA records (comodoca.com, digicert.com, letsencrypt.org, pki.goog, sectigo.com).
We've observed 1 previous certificate for this host. This certificate has been served since Oct 8, 2026.
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Uptime
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DNS changes
We watch NS, MX, CAA, CNAME, TXT 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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