443/tcp
TLS
first 2026-06-07 · last 2026-06-07
- TLS
- TLSv1.2
- Certificate for
- micollab.arcus.nl, vdorcol01.arcus.nl, vdordmz01.arcus.nl
- Issued by
- Sectigo Public Server Authentication CA DV R36
- Valid
- 2026-05-06 → 2026-11-20
Raw response
HTTP/1.1 400 Bad Request Date: Sun, 07 Jun 2026 10:06:16 GMT Server: Apache Referrer-Policy: strict-origin-when-cross-origin X-XSS-Protection: 1; mode=block X-Content-Type-Options: nosniff X-Frame-Options: SAMEORIGIN Strict-Transport-Security: max-age=63072000; includeSubdomains Content-Length: 362 Connection: close Content-Type: text/html; charset=iso-8859-1 <!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN"> <html><head> <title>400 Bad Request</title> </head><body> <h1>Bad Request</h1> <p>Your browser sent a request that this server could not understand.<br /> Reason: You're speaking plain HTTP to an SSL-enabled server port.<br /> Instead use the HTTPS scheme to access this URL, please.<br /> </p> </body></html>