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 zweirad-aebi.ch

Valid
Issued by (CA)
Let's Encrypt
Subject
zweirad-aebi.ch
Valid from
Jun 3, 2026
Valid until
Sep 1, 2026 (40 days remaining)
Public key
RSA 2048-bit
Serial
05AB2A6907C9EAB37326B9DC646269255F72
SHA-256 fingerprint
26:14:C7:AD:80:64:D2:8E:04:F5:E5:97:A7:29:9C:AD:90:19:4D:CB:73:7E:3F:67:AB:42:DF:FB:3A:46:5E:9A
Chain
YR1 → Root YR → ISRG Root X1
Subject Alternative Names (2)
www.zweirad-aebi.ch, zweirad-aebi.ch

Certificate Authority Authorization (CAA)

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

Never get surprised by zweirad-aebi.ch's certificate expiring

This is today's certificate. Turn on monitoring and we'll watch zweirad-aebi.ch 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.