SSL/TLS Certificate Lookup

Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted

mein-dm.app

SSL/TLS Certificate

WhoisRDAPDNS RecordsCertificateUptimeDiagnosticsHistoryHide Contact Info

SSL/TLS Certificate for mein-dm.app

Valid
Issued by (CA)
Let's Encrypt
Subject
dm-partnerportal.com
Valid from
Oct 1, 2026
Valid until
Dec 30, 2026 (70 days remaining)
Public key
RSA 2048-bit
Serial
05D8A8DC8010C9E46359AD4B860F9634EBCC
SHA-256 fingerprint
C1:CD:3C:52:21:6B:E9:3F:D4:DE:46:A0:9F:9C:BA:E0:DF:DF:6A:82:A1:26:6B:A3:B6:88:43:27:87:CE:CC:49
Chain
YR1 → Root YR → ISRG Root X1
Subject Alternative Names (45)
dm-partnerportal.com, dm.at, dm.cz, dm.de, dm.hr, dm.hu, dm.mk, dm.pl, dm.ro, dm.rs, dm.si, dm.sk, dmarkt.cz, dmlehre.at, dmlehrling.at, dmstart.cz, dmtech.at, dmtech.de, dmtech.pl, drogerie-dm.cz, drogeriedm.cz, drogeriemarkt.sk, gbttech.at, gbttech.de, gbttech.pl, lehrebeidm.at, mein-dm.app, meindm.app, meindm.at, meindm.ks.dm.de, meindm.ks.rls.dm.de, mens-world.cz, mojadm.sk, nimbus.run, s-he.at, seinz.com, www.arbeit-anders-leben.de, www.arbeitandersleben.de, www.dm-lehre.at, www.dm-lehrling.at, www.dmlehre.at, www.dmlehrling.at, www.lehrebeidm.at, www.xn--glckskind-r9a.com, xn--glckskind-r9a.com

Certificate Authority Authorization (CAA)

The serving CA (Let's Encrypt) is authorized by this domain's CAA records (amazon.com, digicert.com, globalsign.com, letsencrypt.org, pki.goog, sectigo.com).

We've observed 1 previous certificate for this host. This certificate has been served since Oct 11, 2026.

Never get surprised by mein-dm.app's certificate expiring

This is today's certificate. Turn on monitoring and we'll watch mein-dm.app continuously, notifying you the moment anything moves across all three signals:

Certificate monitor showing the issuer, expiry date, chain status, fingerprint, covered names, and a history of a rotation and an expiry warning

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, CNAME, TXT 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.