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 kulcsar-gmbh.de

Valid
Issued by (CA)
Sectigo Limited
Subject
kulcsar-gmbh.de
Valid from
May 9, 2026
Valid until
Nov 23, 2026 (50 days remaining)
Public key
RSA 2048-bit
Serial
EED0A38631A41B614AEFAFA8D56D733F
SHA-256 fingerprint
B0:75:A3:13:EE:40:A4:85:52:D2:71:81:2F:EA:B4:2A:61:85:A1:C0:40:86:E3:75:DE:52:55:8C:93:37:34:9E
Chain
Sectigo Public Server Authentication CA DV R36 → Sectigo Public Server Authentication Root R46 → USERTrust RSA Certification Authority
Subject Alternative Names (2)
kulcsar-gmbh.de, www.kulcsar-gmbh.de

Certificate Authority Authorization (CAA)

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

This certificate has been served since Aug 12, 2026.

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

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