abclinuxu.cz

.cz crawl

First seen 2026-05-12 · Last seen 2026-05-19 · ok HTTP/1.1 200 5919 ms crawled 2026-05-18

CZ · 171.25.221.158 · AS57707 Greendata s.r.o.

Reputation 87/100 weak security headers no dmarc policy

Classifying

HTML metadata

Title

AbcLinuxu.cz - Linux na stříbrném podnose

Description

Komunitní portál: Linux, Open Source, BSD a jiné unixy. Nejvíce funkcí, nejaktivnější poradna, nejživější blogy. Pozor - návykové.

Language

cs

Canonical

http://www.abclinuxu.cz/

Feeds

Technology

Server: nginx

Ads

Google AdSense
Google Ads (DoubleClick)

Third-party hosts loaded (5)

tpc.googlesyndication.com×2
go.eu.bbelements.com×1
securepubads.g.doubleclick.net×1
www.google.com×1
www.googletagservices.com×1

Social

DNS records live

NS

alfa.ns.active24.cz
beta.ns.active24.cz
gama.ns.active24.sk

MX

10 nds1.nitemedia.cz

Email authentication weak

SPF: not published
DMARC: not published
DKIM: no key found at common selectors

Certificate (current)

R12

from 2026-04-01 to 2026-06-30

Expires in 40 days

Full certificate history on crt.sh ↗

HTTP security headers

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

findings

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

Links to (23)

Linked from (6)