SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
brent-acl.ac.uk
SSL/TLS Certificate
SSL/TLS Certificate for brent-acl.ac.uk
Self-signed- Issued by (CA)
- WatchGuard
- Subject
- Fireware web CA
- Valid from
- Jan 7, 2018
- Valid until
- Feb 4, 2028 (556 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 5A797DCA
- SHA-256 fingerprint
- 2A:B6:FF:50:A4:85:1B:7E:90:36:1B:21:28:B3:7C:47:D0:17:81:D2:AB:63:43:61:CE:39:3D:FB:21:3B:CD:F2
- Chain
- Fireware web CA
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 Jul 26, 2026.
Never get surprised by brent-acl.ac.uk's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch brent-acl.ac.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.
Free for your first domain: uptime, DNS, and certificate together. No credit card.