critical.cz

.cz crawl

First seen 2026-05-23 · Last seen 2026-05-31 · ok HTTP/1.1 200 780 ms crawled 2026-05-28

CZ · 37.235.104.224 · AS39392 SH.cz s.r.o.

Reputation 92/100 no dmarc policy

Classifying

HTML metadata

Title
critical

Technology

Server
Apache
CMS
WordPress
Analytics
  • Google Tag Manager

Third-party hosts loaded (1)

  • www.googletagmanager.com×1

DNS records live

NS
  • ns.wedos.com
  • ns.wedos.cz
  • ns.wedos.eu
  • ns.wedos.net
MX
  • 10 aspmx.l.google.com
  • 15 alt1.aspmx.l.google.com
  • 15 alt2.aspmx.l.google.com
  • 20 alt3.aspmx.l.google.com
  • 20 alt4.aspmx.l.google.com
Verified for
  • Google
  • Meta

Email authentication weak

SPF
v=spf1 a mx include:sparkpostmail.com include:_spf.google.com include:servers.mcsv.net -all
strict (-all)
DMARC
not published
DKIM
no key found at common selectors

Certificate (current)

R13
from 2026-04-21 to 2026-07-20
Expires in 50 days

HTTP security headers

Header hygiene 55/100 Checked live page: https://www.critical.cz/

present
  • x-frame-options
  • x-content-type-options
  • referrer-policy
findings
  • missing HSTS
  • missing Content Security Policy
  • missing Permissions Policy
Header values
referrer-policy
no-referrer, strict-origin-when-cross-origin
x-frame-options
DENY
x-content-type-options
nosniff

Linked from (9)