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 dema.academy

Valid
Issued by (CA)
Let's Encrypt
Subject
dema.academy
Valid from
Aug 27, 2026
Valid until
Nov 25, 2026 (71 days remaining)
Public key
RSA 2048-bit
Serial
06B5F452C85183E0AF7B1E56828A2E072583
SHA-256 fingerprint
68:9C:86:01:FD:65:63:50:74:2C:F6:2A:95:A0:D8:0C:2F:EA:23:56:66:71:1E:D6:18:38:37:31:56:C1:31:99
Chain
YR2 → Root YR → ISRG Root X1
Subject Alternative Names (2)
dema.academy, www.dema.academy

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 27, 2026.

Never get surprised by dema.academy's certificate expiring

This is today's certificate. Turn on monitoring and we'll watch dema.academy 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.

Monitor this certificate free

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