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 swissonline.ch

Expired
Issued by (CA)
GlobalSign nv-sa
Subject
hispeed.ch
Valid from
Aug 26, 2025
Valid until
Sep 27, 2026 (expired 4 days ago)
Public key
RSA 2048-bit
Serial
3AB3DF790761FFA5B9276DD0
SHA-256 fingerprint
9B:58:CC:51:B7:D0:6D:7F:84:0F:2D:E8:17:BC:99:72:EB:98:D0:31:C2:A3:5D:BD:CF:12:E4:B3:71:EE:BA:6A
Chain
GlobalSign GCC R3 DV TLS CA 2020 → GlobalSign
Subject Alternative Names (9)
de.hispeed.ch, en.hispeed.ch, eng.hispeed.ch, fr.hispeed.ch, fra.hispeed.ch, hispeed.ch, it.hispeed.ch, ita.hispeed.ch, www.hispeed.ch

Certificate Authority Authorization (CAA)

The serving CA (GlobalSign nv-sa) is authorized by this domain's CAA records (globalsign.com).

This certificate has been served since Jul 24, 2026.

Never get surprised by swissonline.ch's certificate expiring

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