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 ww-architekten.com

Valid
Issued by (CA)
Sectigo Limited
Subject
*.ww-architekten.com
Valid from
Oct 7, 2026
Valid until
Apr 19, 2027 (168 days remaining)
Public key
RSA 2048-bit
Serial
F90AD4F2B060BAADE7AEE15B5CE50E55
SHA-256 fingerprint
E2:92:A9:B0:4B:5E:21:60:E3:C9:3A:56:12:C6:B5:96:DD:48:35:2A:43:1F:40:4A:A9:D1:8A:46:96:F7:3D:85
Chain
Sectigo Public Server Authentication CA DV R36 → Sectigo Public Server Authentication Root R46 → USERTrust RSA Certification Authority
Subject Alternative Names (2)
*.ww-architekten.com, ww-architekten.com

Certificate Authority Authorization (CAA)

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

Never get surprised by ww-architekten.com's certificate expiring

This is today's certificate. Turn on monitoring and we'll watch ww-architekten.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.