century21.cz

.cz crawl

First seen 2026-06-01 · Last seen 2026-06-01 · ok HTTP/1.1 200 363 ms crawled 2026-06-01

US · 76.76.21.21 · AS16509 Amazon.com, Inc.

Reputation 100/100

Classifying

HTML metadata

Title: CENTURY 21 | Moderní realitní služby a nemovitosti
Description: Prodej, nákup i pronájem nemovitostí s důrazem na kvalitu a profesionální servis. CENTURY 21 působí na více než 70 místech v celé ČR
Language: cs

Open Graph

url: https://www.century21.cz
title: CENTURY 21 | Moderní realitní služby a nemovitosti
locale: cs_CZ
site name: CENTURY 21
description: Prodej, nákup i pronájem nemovitostí s důrazem na kvalitu a profesionální servis. CENTURY 21 působí na více než 70 místech v celé ČR

Technology

CDN: Vercel
CMS: WordPress

Analytics

Google Tag Manager

Third-party hosts loaded (4)

c.seznam.cz×1
live-file-api.igluu.cz×1
translate.google.com×1
www.googletagmanager.com×1

Social

DNS records live

NS

adrian.ns.cloudflare.com
ray.ns.cloudflare.com

MX

1 aspmx.l.google.com
10 alt3.aspmx.l.google.com
10 alt4.aspmx.l.google.com
5 alt1.aspmx.l.google.com
5 alt2.aspmx.l.google.com

Verified for

Google
Google Workspace

Email authentication strong

SPF

v=spf1 ip4:185.247.28.159 include:spf.protection.outlook.com include:servers.mcsv.net include:spf.smartemailing.cz include:_spf.google.com include:spf.reego.cz  ~all

softfail (~all)

DMARC

v=DMARC1; p=quarantine; adkim=r; aspf=r

policy: quarantine

DKIM

k1: k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDbNrX2cY/GUKIFx2G/1I00ftdAj713WP9AQ1xir85i89sA2guU0ta4UX1Xzm06XIU6iBP41VwmPwBGRNofhBVR+e6WHUo…

selectors probed

Certificate (current)

R13

from 2026-05-23 to 2026-08-21

Expires in 80 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 50/100 Checked live page: https://www.century21.cz/

present

strict-transport-security

findings

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

Header values

strict-transport-security: max-age=63072000