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 rids-switzerland.org

Valid
Issued by (CA)
Let's Encrypt
Subject
ftp.rids-switzerland.org
Valid from
Sep 18, 2026
Valid until
Dec 17, 2026 (74 days remaining)
Public key
EC 384-bit
Serial
0553D819B996699959F7DF4377A789507E71
SHA-256 fingerprint
BB:97:E6:99:35:33:B3:BD:3D:05:CA:80:D5:31:94:18:DE:45:21:96:A7:F8:B9:15:CB:B0:03:9B:AE:12:58:24
Chain
YE1 → Root YE → ISRG Root X2 → ISRG Root X1
Subject Alternative Names (4)
ftp.rids-switzerland.org, mail.rids-switzerland.org, rids-switzerland.org, www.rids-switzerland.org

Certificate Authority Authorization (CAA)

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

We've observed 1 previous certificate for this host. This certificate has been served since Sep 19, 2026.

Never get surprised by rids-switzerland.org's certificate expiring

This is today's certificate. Turn on monitoring and we'll watch rids-switzerland.org 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.