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 auer-packaging.ch

Valid
Issued by (CA)
Let's Encrypt
Subject
auer-packaging.ch
Valid from
Oct 2, 2026
Valid until
Dec 31, 2026 (76 days remaining)
Public key
RSA 2048-bit
Serial
05A0F9400059B98F7D0599DBE9D2C832D8E6
SHA-256 fingerprint
BF:4B:A2:7C:F5:B5:62:C8:5A:67:48:0A:66:FF:21:53:A6:D7:AD:B1:39:CC:31:F0:6B:5B:CC:37:E2:38:1F:81
Chain
YR2 → Root YR → ISRG Root X1
Subject Alternative Names (2)
auer-packaging.ch, www.auer-packaging.ch

Certificate Authority Authorization (CAA)

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

Never get surprised by auer-packaging.ch's certificate expiring

This is today's certificate. Turn on monitoring and we'll watch auer-packaging.ch 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.