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 asd-schaefer.de

Valid
Issued by (CA)
Let's Encrypt
Subject
asd-schaefer.de
Valid from
Aug 28, 2026
Valid until
Nov 26, 2026 (72 days remaining)
Public key
EC 256-bit
Serial
06E859E51D3947E661C346CA52ECBAFCC450
SHA-256 fingerprint
CD:E8:73:D3:8B:DE:62:A8:47:68:5A:DB:7C:B8:5B:F9:BC:70:63:E4:5C:45:C1:75:99:66:3C:81:65:9E:2D:E7
Chain
YE1 → Root YE → ISRG Root X2 → ISRG Root X1
Subject Alternative Names (2)
asd-schaefer.de, www.asd-schaefer.de

Certificate Authority Authorization (CAA)

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

Never get surprised by asd-schaefer.de's certificate expiring

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