dumrynovice.cz

.cz crawl

First seen 2026-05-24 · Last seen 2026-05-31 · ok HTTP/1.1 200 1861 ms crawled 2026-05-28

CZ · 81.91.84.99 · AS39790 Web4U s.r.o.

Reputation 92/100 no dmarc policy

Classifying

HTML metadata

Title: Dům Rýnovice
Language: cs

Open Graph

url: https://www.dumrynovice.cz//
title: Úvod
site name: Dům Rýnovice

Technology

Server: nginx
Stack: PHP

Analytics

Google Tag Manager

Third-party hosts loaded (3)

api.mapy.cz×1
www.google.com×1
www.googletagmanager.com×1

Social

Registration

Registrar

REG-WEB4U

Created

2016-06-02

Expires

2027-06-01 365 days left

Updated

2017-11-24

Name servers

ns2.web4u.cz
ns.web4u.cz

DNS records live

NS

ns.web4u.cz
ns2.web4u.cz

MX

10 mail.dumrynovice.cz

Email authentication weak

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

Certificate (current)

R13

from 2026-04-13 to 2026-07-12

Expires in 41 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 80/100 Checked live page: https://www.dumrynovice.cz

present

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

findings

short HSTS max-age
CSP allows unsafe inline scripts/styles
CSP uses wildcard sources
missing Permissions Policy

Header values

referrer-policy: no-referrer-when-downgrade
x-frame-options: SAMEORIGIN
x-content-type-options: nosniff
content-security-policy: default-src 'self' https://*.googleapis.com/ https://*.google-analytics.com/ https://*.google-analytics.com/ https://*.googletagmanager.com/ https://*.google.com/ https://*.youtube.com/ https://*.gstatic.com/ https://*.cloudflare.com/ https://*.bootstrapcdn.com/ https://*.klicenka.uvm.cz/ https://*.doubleclick.net/ https://*.mapy.cz/ https://connect.facebook.net/ https://*.facebook.com/ ; script-src 'self' 'unsafe-inline' 'unsafe-eval' https://*.googleapis.com/ https://*.google-analytics.com/ https://*.google-analytics.com/ https://*.googletagmanager.com/ https://*.google.com/ https://*.youtube.com/ https://*.gstatic.com/ https://*.cloudflare.com/ https://*.bootstrapcdn.com/ https://*.klicenka.uvm.cz/ https://*.doubleclick.net/ https://*.mapy.cz/ https://connect.facebook.net/ https://*.facebook.com/ ; connect-src 'self' https://*.googleapis.com/ https://*.google-analytics.com/ https://*.google-analytics.com/ https://*.googletagmanager.com/ https://*.google.com/ https://*.youtube.com/ h
strict-transport-security: max-age=2592000; includeSubDomains