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 thurec.ch

Valid
Issued by (CA)
Let's Encrypt
Subject
www.thurec.ch
Valid from
Aug 26, 2026
Valid until
Nov 24, 2026 (62 days remaining)
Public key
RSA 4096-bit
Serial
05D37139AF1AA9E5CA5422ACEB5C3FCB7B99
SHA-256 fingerprint
99:0A:1B:6B:12:2C:76:9F:89:52:20:D1:5D:8F:C7:A2:BB:50:7F:2F:86:35:69:FA:92:F2:84:02:FB:95:91:47
Chain
YR1 → Root YR → ISRG Root X1
Subject Alternative Names (2)
thurec.ch, www.thurec.ch

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 10, 2026.

Never get surprised by thurec.ch's certificate expiring

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