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 grauwacke-union.de

Valid
Issued by (CA)
Let's Encrypt
Subject
basalt.de
Valid from
Jul 21, 2026
Valid until
Oct 19, 2026 (72 days remaining)
Public key
EC 256-bit
Serial
052A0147433F74B1E65A712BC285E1665EB2
SHA-256 fingerprint
0E:8E:10:98:50:B2:B6:47:AE:3F:AD:00:4C:7F:94:0F:2A:07:EA:D4:F9:FC:3E:D8:45:C0:A6:89:0B:26:5E:DE
Chain
YE2 → Root YE → ISRG Root X2 → ISRG Root X1
Subject Alternative Names (16)
abc-baustoffe.de, basalt-nordwest.de, basalt.de, bvg-kirn.de, deutag.de, gab-recycling.de, grauwacke-union.de, nng.de, www.abc-baustoffe.de, www.basalt-nordwest.de, www.basalt.de, www.bvg-kirn.de, www.deutag.de, www.gab-recycling.de, www.grauwacke-union.de, www.nng.de

Certificate Authority Authorization (CAA)

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

Never get surprised by grauwacke-union.de's certificate expiring

This is today's certificate. Turn on monitoring and we'll watch grauwacke-union.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.