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 lanstrop.de

Valid
Issued by (CA)
Sectigo Limited
Subject
lanstrop.de
Valid from
Feb 22, 2026
Valid until
Mar 15, 2027 (188 days remaining)
Public key
RSA 2048-bit
Serial
4624C3D9B282A9DE7C94A03D6C8DF11A
SHA-256 fingerprint
CC:3F:71:D0:0F:A8:7A:92:56:AF:CF:8E:7C:48:3A:62:F1:68:5B:DF:DF:B7:EF:E0:D7:CD:50:03:7B:BA:91:25
Chain
Sectigo Public Server Authentication CA DV R36 → Sectigo Public Server Authentication Root R46 → USERTrust RSA Certification Authority
Subject Alternative Names (2)
lanstrop.de, www.lanstrop.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 Sep 8, 2026.

Never get surprised by lanstrop.de's certificate expiring

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