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 denix-deutschland.de

Self-signed
Issued by (CA)
flexo
Subject
flexo
Valid from
May 14, 2012
Valid until
May 12, 2022 (expired 1647 days ago)
Public key
RSA 2048-bit
Serial
E96E4E8543BC385D
SHA-256 fingerprint
95:8C:BE:6C:16:35:40:68:0F:75:F7:20:B5:44:F8:1E:5E:36:03:5B:AF:00:EF:C4:4F:02:55:5B:8F:73:89:26
Chain
flexo

Certificate Authority Authorization (CAA)

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

Never get surprised by denix-deutschland.de's certificate expiring

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