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 shs-sahko.fi

Valid
Issued by (CA)
Let's Encrypt
Subject
www.shs-sahko.fi
Valid from
Sep 19, 2026
Valid until
Dec 18, 2026 (44 days remaining)
Public key
RSA 2048-bit
Serial
055B304B29279ED4F06403626571CB55D679
SHA-256 fingerprint
C6:D8:71:26:F0:04:DC:2D:7A:A8:F5:F4:25:B5:9E:7F:F0:B3:EA:C2:F9:FA:57:5E:13:18:C2:C5:D1:6F:35:75
Chain
YR2 → Root YR → ISRG Root X1
Subject Alternative Names (2)
shs-sahko.fi, www.shs-sahko.fi

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 Oct 8, 2026.

Never get surprised by shs-sahko.fi's certificate expiring

This is today's certificate. Turn on monitoring and we'll watch shs-sahko.fi 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.