SSL/TLS Certificate Lookup

Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted

SSL/TLS Certificate for sioncwilt.ceredigion.sch.uk

Expired
Issued by (CA)
Let's Encrypt
Subject
ftp.sioncwilt.ceredigion.sch.uk
Valid from
Sep 27, 2025
Valid until
Dec 26, 2025 (expired 322 days ago)
Public key
EC 384-bit
Serial
050C25BD207D215F7FC66611C9732237ED3F
SHA-256 fingerprint
47:82:DE:CB:1C:7C:41:B3:28:AA:D0:65:F6:A8:59:05:EB:34:05:D4:4F:F5:7C:64:79:2B:8B:D7:9A:72:4B:2A
Chain
E8 → ISRG Root X1
Subject Alternative Names (4)
ftp.sioncwilt.ceredigion.sch.uk, sioncwilt.ceredigion.sch.uk, v3.sioncwilt.ceredigion.sch.uk, www.sioncwilt.ceredigion.sch.uk

Certificate Authority Authorization (CAA)

The serving CA (Let's Encrypt) is authorized by this domain's CAA records (letsencrypt.org, quovadisglobal.com, sectigo.com).

This certificate has been served since Aug 11, 2026.

Never get surprised by sioncwilt.ceredigion.sch.uk's certificate expiring

This is today's certificate. Turn on monitoring and we'll watch sioncwilt.ceredigion.sch.uk continuously, notifying you the moment anything moves across all three signals:

Certificate monitor showing the issuer, expiry date, chain status, fingerprint, covered names, and a history of a rotation and an expiry warning

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, 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.

Monitor this certificate free

Free for your first domain: uptime, DNS, and certificate together. No credit card.