indexo.dev

zrzka.cz

.cz dns

First seen 2026-05-31 · Last seen 2026-06-01 · ok HTTP/1.1 200 431 ms crawled 2026-06-01

CZ · 89.221.220.22 · AS197019 WEDOS Internet, a.s.

Reputation 89/100 weak security headers dmarc monitor-only

Classifying

HTML metadata

Title
hosting zrzka
Language
cs

Technology

Server
Apache
Analytics
  • Google Tag Manager
Fonts
  • Google Fonts

Third-party hosts loaded (4)

  • cdnjs.cloudflare.com×4
  • fonts.googleapis.com×3
  • www.googletagmanager.com×3
  • fonts.gstatic.com×2

Contact

Email
Phone

DNS records live

NS
  • ns.wedos.com
  • ns.wedos.cz
  • ns.wedos.eu
  • ns.wedos.net
MX
  • 1 mail.zrzka.cz
Verified for
  • Google

Email authentication partial

SPF
v=spf1 include:_spf.zrzka.cz include:_spf.google.com -all
strict (-all)
DMARC
v=DMARC1; p=none; rua=mailto:dmarc_agg@vali.email,mailto:dmarc@zrzka.cz; ruf=mailto:dmarc@zrzka.cz;
policy: none (monitoring only)
DKIM
no key found at common selectors

Certificate (current)

R12
from 2026-04-28 to 2026-07-27
Expires in 54 days

Full certificate history on crt.sh ↗

HTTP security headers

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

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