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 hafen-apo-dortmund.de

Valid
Issued by (CA)
Let's Encrypt
Subject
hafen-apo-dortmund.de
Valid from
Jul 9, 2026
Valid until
Oct 7, 2026 (61 days remaining)
Public key
RSA 4096-bit
Serial
0537E99A454450215FCD8E9826BEC5C5382E
SHA-256 fingerprint
EA:4A:2D:CC:08:F9:68:CF:EC:0E:92:B8:05:12:61:5B:D6:CA:B2:A5:ED:A2:EF:8B:E1:BC:5F:17:8D:5E:AD:A4
Chain
YR1 → Root YR → ISRG Root X1
Subject Alternative Names (2)
hafen-apo-dortmund.de, www.hafen-apo-dortmund.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 Jul 24, 2026.

Never get surprised by hafen-apo-dortmund.de's certificate expiring

This is today's certificate. Turn on monitoring and we'll watch hafen-apo-dortmund.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.