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 frederic-jochum.com

Valid
Issued by (CA)
Sectigo Limited
Subject
*.frederic-jochum.com
Valid from
Sep 16, 2026
Valid until
Mar 15, 2027 (158 days remaining)
Public key
RSA 2048-bit
Serial
8D0B5E56195FD40E1E033C78A51F4253
SHA-256 fingerprint
7F:63:DF:6A:2F:FF:A1:A7:1F:82:E8:FA:95:01:78:49:44:C9:A2:AE:45:84:2D:49:1A:C3:A0:F1:89:E4:AE:6B
Chain
Sectigo Public Server Authentication CA DV R36 → Sectigo Public Server Authentication Root R46 → USERTrust RSA Certification Authority
Subject Alternative Names (2)
*.frederic-jochum.com, frederic-jochum.com

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 Sep 25, 2026.

Never get surprised by frederic-jochum.com's certificate expiring

This is today's certificate. Turn on monitoring and we'll watch frederic-jochum.com 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.