zdrojak.cz

.cz crawl

First seen 2026-05-11 · Last seen 2026-05-19 · ok HTTP/1.1 200 10389 ms crawled 2026-05-17

US · 162.159.134.42 · AS13335 Cloudflare, Inc.

Reputation 87/100 weak security headers no dmarc policy

Classifying

HTML metadata

Title: Zdroják - o tvorbě webových stránek a aplikací
Description: Zdroják o tvorbě webových stránek a aplikací
Language: cs
Generator: WordPress 6.9.4
Canonical: https://zdrojak.cz/

Open Graph

url: https://zdrojak.cz/
title: Zdroják
locale: cs_CZ
site name: Zdroják
description: Zdroják o tvorbě webových stránek a aplikací

Technology

CDN: Cloudflare
CMS: WordPress

Analytics

Google Tag Manager

Ads

Google Ads (DoubleClick)

Third-party hosts loaded (4)

cdn.jsdelivr.net×2
gmpg.org×1
securepubads.g.doubleclick.net×1
www.googletagmanager.com×1

Social

Registration

Registrar

REG-INTERNET-CZ

Created

2008-08-13

Expires

2026-08-12 83 days left

Updated

2019-02-12

Name servers

ns6.adminit.cz
ns.iinfo.cz

DNS records live

NS

ns.iinfo.cz
ns6.adminit.cz

MX

10 mx.zoho.com
20 mx2.zoho.com
50 mx3.zoho.com

TXT

ca3-4b5ef83b0c504752b1d908b6ac220943

Verified for

Google

Email authentication weak

SPF: v=spf1 mx include:zoho.com mx:mon.wikidi.net mx:mail12.ignum.cz ip4:217.31.55.70/32 ip4:62.109.128.0/24 ip4:217.31.49.0/24 -all
strict (-all)
DMARC: not published
DKIM: no key found at common selectors

Certificate (current)

WE1

from 2026-04-11 to 2026-07-10

Expires in 51 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 40/100 Checked live page: https://zdrojak.cz/

present

x-content-type-options

findings

missing HSTS
missing Content Security Policy
missing frame protection
missing Referrer Policy
missing Permissions Policy

Header values

x-content-type-options: nosniff