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 masic.de

Expired
Issued by (CA)
Sectigo Limited
Subject
www.masic.de
Valid from
Jan 11, 2025
Valid until
Jan 26, 2026 (expired 177 days ago)
Public key
RSA 2048-bit
Serial
D050BFC65E4F900F319EA4F8E0E0E949
SHA-256 fingerprint
9A:59:C8:A4:F2:8D:9D:2C:38:2A:42:2E:4F:22:66:63:26:C9:8E:6D:AA:23:73:DB:4D:FE:A7:FA:B9:5B:78:75
Chain
Sectigo RSA Domain Validation Secure Server CA → USERTrust RSA Certification Authority
Subject Alternative Names (2)
masic.de, www.masic.de

Certificate Authority Authorization (CAA)

No CAA policy is published for this domain — any certificate authority may issue for it.

Never get surprised by masic.de's certificate expiring

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