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 elkrueger.de

Expired
Issued by (CA)
Let's Encrypt
Subject
elkrueger.de
Valid from
Jan 2, 2026
Valid until
Apr 2, 2026 (expired 154 days ago)
Public key
EC 384-bit
Serial
06C0A30DC18C3FB2BE90B6F38DAD379B861E
SHA-256 fingerprint
02:BC:15:64:D7:A0:1E:6B:E2:38:B4:FA:9B:18:88:63:AB:85:19:AE:A0:43:C8:82:D9:81:1D:A1:45:58:32:F8
Chain
E8 → ISRG Root X1
Subject Alternative Names (3)
elkrueger.de, micha.elkrueger.de, www.elkrueger.de

Certificate Authority Authorization (CAA)

The serving CA (Let's Encrypt) is authorized by this domain's CAA records (letsencrypt.org).

Never get surprised by elkrueger.de's certificate expiring

This is today's certificate. Turn on monitoring and we'll watch elkrueger.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.