indexo.dev

ctgroup.cz

.cz dns

First seen 2026-06-03 · Last seen 2026-06-03 · ok HTTP/1.1 200 327 ms crawled 2026-06-03

CZ · 178.238.45.39 · AS24971 MasterDC s.r.o.

Reputation 89/100 weak security headers dmarc monitor-only

Classifying

HTML metadata

Title
CT

Technology

Server
Microsoft-IIS

DNS records live

NS
  • ns.forpsi.cz
  • ns.forpsi.it
  • ns.forpsi.net
MX
  • 0 ctgroup-cz.mail.protection.outlook.com
Verified for
  • Google
  • Microsoft 365

Email authentication partial

SPF
v=spf1 ip4:178.238.45.36 ip4:178.238.45.57 ip4:194.228.84.64 include:spf.protection.outlook.com -all
strict (-all)
DMARC
v=DMARC1; p=none; rua=mailto:dmarc@ctgroup.cz
policy: none (monitoring only)
DKIM
  • selector1: v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEApusHK4EnMP+nUlXY21y7igAfvFdyzz8vNyejeHRnqlllG+aUurWK6Sc7U4KO4YvheqVFwiQF0zWTnM…
selectors probed

Certificate (current)

YR2
from 2026-06-01 to 2026-08-30
Expires in 86 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 30/100 Checked live page: https://ctgroup.cz/

findings
  • missing HSTS
  • missing Content Security Policy
  • missing frame protection
  • missing content type protection
  • missing Referrer Policy
  • missing Permissions Policy

Links to (2)