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 querfeld-basel.ch

Valid
Issued by (CA)
Let's Encrypt
Subject
querfeld-basel.ch
Valid from
Aug 3, 2026
Valid until
Nov 1, 2026 (42 days remaining)
Public key
RSA 2048-bit
Serial
060F0530ADD7B86A1EB31CFA1D8A2F5E6793
SHA-256 fingerprint
E7:B0:B6:D3:9F:2F:32:CC:8C:E3:CE:B2:BE:6A:EF:59:39:C3:83:69:49:0D:80:EE:92:02:42:C0:A5:F1:C1:3B
Chain
YR2 → Root YR → ISRG Root X1
Subject Alternative Names (3)
autodiscover.querfeld-basel.ch, querfeld-basel.ch, www.querfeld-basel.ch

Certificate Authority Authorization (CAA)

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

Never get surprised by querfeld-basel.ch's certificate expiring

This is today's certificate. Turn on monitoring and we'll watch querfeld-basel.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.