a11.cz

.cz crawl

First seen 2026-05-11 · Last seen 2026-05-19 · ok HTTP/1.1 200 10594 ms crawled 2026-05-17

US · 104.21.32.195 · AS13335 Cloudflare, Inc.

Reputation 94/100 dmarc monitor-only

Classifying

HTML metadata

Title: A 11 s.r.o. – Vydavatel lokálního, odborného a lifestylového tisku
Language: cs
Canonical: https://www.a11.cz/

Open Graph

url: https://www.a11.cz/
title: A 11 s.r.o. – Vydavatel lokálního, odborného a lifestylového tisku
locale: cs_CZ
site name: A 11 s.r.o.

Technology

CDN: Cloudflare
CMS: WordPress

Analytics

Cloudflare Insights

Third-party hosts loaded (4)

ajax.googleapis.com×1
cdnjs.cloudflare.com×1
mn-cdn.knytl.it×1
static.cloudflareinsights.com×1

Social

Registration

Registrar

REG-INTERNET-CZ

Created

2004-02-24

Expires

2032-02-23 2104 days left

Updated

2020-03-19

Name servers

evelyn.ns.cloudflare.com
kareem.ns.cloudflare.com

DNS records live

NS

evelyn.ns.cloudflare.com
kareem.ns.cloudflare.com

MX

10 13b24264336de88b.mx1.emailprofi.seznam.cz
20 13b24264336de88b.mx2.emailprofi.seznam.cz

TXT

have-i-been-pwned-verification=2e3c8810f817e413a8bb76fd72567727

Verified for

Microsoft 365

Email authentication partial

SPF

v=spf1 mx mx:smtp.atollon.com a:dolphin.atollon.com include:spf.seznam.cz include:s04.knytl.cloud ip4:49.13.13.234 ip4:83.167.228.210 include:_spf.forpsi.com include:smtpx.stable.cz ~all

softfail (~all)

DMARC

v=DMARC1; p=none; rua=mailto:b0914a906eaf4abd912711493bb5eaba@dmarc-reports.cloudflare.net; fo=1; ri=86400;

policy: none (monitoring only)

DKIM

dkim: p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDj0InLv/Kh3ncHw5gcHx4A89Ckqc9PqLYse/2ke0zwANztVIPvGfs2Z4jVuQ+QAfKZennSnjPJWlLMCka3RYrni4+ecmAHKyzRI5…
s1: k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDRZM5BE+XSTNAnRfasvOYTE3/T/wKQ6k3U36krQc+VOAT2LOBJ7rsfeZtHJK+bpxpsShtA65Hj9imbgABeDZukT1XNM15…

selectors probed

Certificate (current)

WE1

from 2026-04-03 to 2026-07-02

Expires in 43 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 85/100 Checked live page: https://www.a11.cz/

present

strict-transport-security
content-security-policy
x-frame-options
x-content-type-options
referrer-policy

findings

weak frame protection
weak content type protection
missing Permissions Policy

Header values

referrer-policy: strict-origin-when-cross-origin, same-origin, same-origin
x-frame-options: SAMEORIGIN, SAMEORIGIN, SAMEORIGIN
x-content-type-options: nosniff, nosniff, nosniff
content-security-policy: upgrade-insecure-requests;
strict-transport-security: max-age=15768000; includeSubDomains