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 videx-bau.at

Expired
Issued by (CA)
Let's Encrypt
Subject
videx-bau.at
Valid from
Jun 11, 2026
Valid until
Sep 9, 2026 (expired 55 days ago)
Public key
RSA 4096-bit
Serial
06B53ACC7C5983CE32BD0E053976A7C018B5
SHA-256 fingerprint
F7:19:EE:46:E9:FC:08:E8:78:C7:9B:68:BB:1F:DA:F7:65:3F:29:75:E5:D5:AB:A6:6E:20:47:52:0B:B6:76:4D
Chain
YR1 → Root YR → ISRG Root X1
Subject Alternative Names (2)
videx-bau.at, www.videx-bau.at

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 22, 2026.

Never get surprised by videx-bau.at's certificate expiring

This is today's certificate. Turn on monitoring and we'll watch videx-bau.at 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.