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 vsg-basel.ch

Valid
Issued by (CA)
Let's Encrypt
Subject
www.vsg-basel.ch
Valid from
Oct 26, 2026
Valid until
Jan 24, 2027 (82 days remaining)
Public key
RSA 3072-bit
Serial
05EF2BBCF53304FC385C9EBAF4E65D230265
SHA-256 fingerprint
56:78:EE:D7:C8:0D:7F:24:A6:5B:AD:38:36:28:50:0D:B5:CF:64:2F:8E:83:43:A7:4A:7C:CA:FA:44:34:FD:7C
Chain
YR2 → Root YR → ISRG Root X1
Subject Alternative Names (2)
vsg-basel.ch, www.vsg-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 vsg-basel.ch's certificate expiring

This is today's certificate. Turn on monitoring and we'll watch vsg-basel.ch continuously, notifying you the moment anything moves across all three signals:

Certificate monitor showing the issuer, expiry date, chain status, fingerprint, covered names, and a history of a rotation and an expiry warning

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, CNAME, TXT 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.