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 sk-profil.com

Expired
Issued by (CA)
Let's Encrypt
Subject
*.sk-profil.com
Valid from
Apr 1, 2026
Valid until
Jun 30, 2026 (expired 130 days ago)
Public key
RSA 2048-bit
Serial
06C13DE0554C409D724EE5E02FF6BD11407E
SHA-256 fingerprint
7D:8E:BE:F3:E2:1A:C0:FC:10:02:2A:D6:22:DB:EC:8B:85:43:01:A3:37:33:34:4B:FB:DB:0C:EA:8E:21:F6:AB
Chain
R13 → ISRG Root X1
Subject Alternative Names (4)
*.sk-profil.com, sk-profil.com, www.mail.sk-profil.com, www.mails.sk-profil.com

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 Aug 7, 2026.

Never get surprised by sk-profil.com's certificate expiring

This is today's certificate. Turn on monitoring and we'll watch sk-profil.com 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.