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 leobner-coaching.de

Self-signed
Issued by (CA)
leobner-coaching.de.df-461912.dummy
Subject
leobner-coaching.de.df-461912.dummy
Valid from
Sep 16, 2025
Valid until
Sep 16, 2026 (6 days remaining)
Public key
RSA 2048-bit
Serial
D21C858B
SHA-256 fingerprint
36:6A:A8:32:15:C7:01:33:EA:43:E9:CF:1C:65:84:65:B0:F1:E9:15:C7:21:A8:B2:AC:C4:69:50:72:32:EC:8D
Chain
leobner-coaching.de.df-461912.dummy
Subject Alternative Names (11)
autodiscover.leobner-coaching.de, cpanel.leobner-coaching.de, cpcalendars.leobner-coaching.de, cpcontacts.leobner-coaching.de, leobner-coaching.de, leobner-coaching.de.df-461912.dummy, mail.leobner-coaching.de, webdisk.leobner-coaching.de, webmail.leobner-coaching.de, www.leobner-coaching.de, www.leobner-coaching.de.df-461912.dummy

Certificate Authority Authorization (CAA)

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

Never get surprised by leobner-coaching.de's certificate expiring

This is today's certificate. Turn on monitoring and we'll watch leobner-coaching.de 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.