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 chaar-gmbh.de

Expired
Issued by (CA)
Let's Encrypt
Subject
chaar-gmbh.de
Valid from
Nov 3, 2024
Valid until
Feb 1, 2025 (expired 603 days ago)
Public key
RSA 2048-bit
Serial
04812C28989CC7C5B78B94562D6CA6501029
SHA-256 fingerprint
D8:1B:34:D7:5E:50:BB:F8:4C:78:72:9D:C3:80:C8:F5:7E:93:D1:88:2B:58:2B:23:FE:69:6B:70:79:E7:C1:6C
Chain
R11 → ISRG Root X1
Subject Alternative Names (2)
chaar-gmbh.de, www.chaar-gmbh.de

Certificate Authority Authorization (CAA)

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

Never get surprised by chaar-gmbh.de's certificate expiring

This is today's certificate. Turn on monitoring and we'll watch chaar-gmbh.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.