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 gs-aschen.de

Valid
Issued by (CA)
Let's Encrypt
Subject
gs-aschen.de
Valid from
Jul 24, 2026
Valid until
Oct 22, 2026 (86 days remaining)
Public key
EC 256-bit
Serial
062BAB1DA367D288C854DE049C0D2DEF42D3
SHA-256 fingerprint
50:D0:9B:C3:98:A7:47:06:5D:48:4D:E9:99:FB:E8:FB:81:AC:8D:B8:54:0A:48:26:67:A8:BF:E8:D0:E4:0D:AE
Chain
YE2 → Root YE → ISRG Root X2 → ISRG Root X1
Subject Alternative Names (2)
*.gs-aschen.de, gs-aschen.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 gs-aschen.de's certificate expiring

This is today's certificate. Turn on monitoring and we'll watch gs-aschen.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.