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 dewit-dijkstra.nl

Untrusted chain
Issued by (CA)
Sectigo Limited
Subject
*.cclnotarissen.nl
Valid from
Oct 25, 2025
Valid until
Oct 25, 2026 (44 days remaining)
Public key
RSA 2048-bit
Serial
35D1357C15FA4AEB42135AD412027C3D
SHA-256 fingerprint
5A:27:1E:CD:0F:A7:6B:3C:BE:3C:C3:AA:58:57:46:3D:69:84:D3:39:0B:F8:16:FE:D3:2A:D1:68:94:47:B5:6C
Chain
Subject Alternative Names (2)
*.cclnotarissen.nl, cclnotarissen.nl

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 dewit-dijkstra.nl's certificate expiring

This is today's certificate. Turn on monitoring and we'll watch dewit-dijkstra.nl 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.