SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
act-ed.co.uk
SSL/TLS Certificate
SSL/TLS Certificate for act-ed.co.uk
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- act-ed.co.uk
- Valid from
- Aug 20, 2026
- Valid until
- Nov 18, 2026 (88 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 05F56FF5FDC992AAFE2E2FBC1782B686AD51
- SHA-256 fingerprint
- FA:98:96:56:9B:10:38:86:3F:60:DD:CC:36:6E:C6:A9:4E:E5:CA:F7:DF:E9:02:6A:73:CF:BA:10:FA:93:4C:99
- Chain
- YR1 → Root YR → ISRG Root X1
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 Aug 18, 2026.
Never get surprised by act-ed.co.uk's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch act-ed.co.uk continuously, notifying you the moment anything moves across all three signals:
Uptime
We visit the site from multiple regions worldwide and email you within minutes if it goes down, with a per-region breakdown so a real outage stands out from a regional blip.
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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