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 l-und-b.de

Valid
Issued by (CA)
Let's Encrypt
Subject
l-und-b.de
Valid from
Jun 15, 2026
Valid until
Sep 13, 2026 (53 days remaining)
Public key
RSA 2048-bit
Serial
06B89CB3A74346E849480052B007E2F4BAEF
SHA-256 fingerprint
9E:11:72:A6:15:CB:A7:7C:D3:C7:91:E8:CE:B4:5D:19:30:41:AB:FF:4D:D0:3D:83:F4:9E:CA:B5:43:2A:7C:85
Chain
YR1 → Root YR → ISRG Root X1
Subject Alternative Names (2)
l-und-b.de, www.l-und-b.de

Certificate Authority Authorization (CAA)

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

Never get surprised by l-und-b.de's certificate expiring

This is today's certificate. Turn on monitoring and we'll watch l-und-b.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.