SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
act-uk.org
SSL/TLS Certificate
SSL/TLS Certificate for act-uk.org
Self-signed- Issued by (CA)
- act-uk.org
- Subject
- act-uk.org
- Valid from
- Nov 11, 2022
- Valid until
- Nov 11, 2023 (expired 1061 days ago)
- Public key
- RSA 2048-bit
- Serial
- 01308D2D03
- SHA-256 fingerprint
- A3:18:BB:FC:68:F6:CD:F6:0B:24:89:AC:C1:05:05:3C:CF:08:28:9D:5A:C0:E6:A6:2F:E8:66:CE:A2:1D:FF:16
- Chain
- act-uk.org
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
Never get surprised by act-uk.org's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch act-uk.org 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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