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 hanjo-schlueter.de

Hostname mismatch
Issued by (CA)
Let's Encrypt
Subject
web2.greensta.de
Valid from
Jul 13, 2026
Valid until
Oct 11, 2026 (67 days remaining)
Public key
RSA 2048-bit
Serial
052C229AE930D2ED8A012529FEA34EE0D831
SHA-256 fingerprint
08:F8:0F:A8:66:DB:40:1E:83:E9:40:9B:58:14:57:6E:87:9F:25:F9:71:03:D2:B2:16:6A:DF:A8:B4:C7:2E:37
Chain
YR1 → Root YR → ISRG Root X1
Subject Alternative Names (1)
web2.greensta.de

Certificate Authority Authorization (CAA)

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

Never get surprised by hanjo-schlueter.de's certificate expiring

This is today's certificate. Turn on monitoring and we'll watch hanjo-schlueter.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.