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 pupil-email.co.uk

Valid
Issued by (CA)
Let's Encrypt
Subject
webmail.exa.net.uk
Valid from
Sep 13, 2026
Valid until
Dec 12, 2026 (38 days remaining)
Public key
RSA 2048-bit
Serial
0520B9873EC889F448282E0BB4F6B55E95B0
SHA-256 fingerprint
73:78:1F:C5:54:7B:22:91:80:58:41:8E:56:AB:37:71:AC:3D:B4:A4:3E:C9:6F:96:39:C6:4B:13:71:98:28:7F
Chain
YR1 → Root YR → ISRG Root X1
Subject Alternative Names (23)
email.exa-networks.co.uk, mta-sts.exa-networks.co.uk, mta-sts.exa.net.uk, pupil-email.co.uk, pupil-email.com, pupil-email.net, pupil-mail.co.uk, pupil-mail.com, pupil-mail.net, pupilemail.co.uk, pupilemail.com, pupilemail.net, pupilmail.com, pupilmail.exa-networks.co.uk, pupilmail.net, roundcube.exa-networks.co.uk, schoolmail.exa-networks.co.uk, test-webmail.exa-networks.co.uk, webmail.0845.uk.com, webmail.booth.northants.sch.uk, webmail.exa-networks.co.uk, webmail.exa.net.uk, webmail.fastmessage.co.uk

Certificate Authority Authorization (CAA)

No CAA policy is published for this domain — any certificate authority may issue for it.

We've observed 1 previous certificate for this host. This certificate has been served since Sep 18, 2026.

Never get surprised by pupil-email.co.uk's certificate expiring

This is today's certificate. Turn on monitoring and we'll watch pupil-email.co.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.