centrumtance.cz

.cz crawl

First seen 2026-06-03 · Last seen 2026-06-04 · ok HTTP/1.1 200 812 ms crawled 2026-06-03

CZ · 82.208.58.243 · AS15685 CASABLANCA INT a.s.

Reputation 89/100 weak security headers dmarc monitor-only

Classifying

HTML metadata

Title: Centrum Tance | Centrum Tance - kurzy a lekce tance a cvičení
Description: Centrum Tance – kurzy tance a cvičení v Praze a Brně.
Language: cs-cz
Canonical: https://www.centrumtance.cz/

Open Graph

url: https://www.centrumtance.cz/
title: Centrum Tance
locale: cs_CZ
site name: Centrum Tance
description: Centrum Tance – kurzy tance a cvičení v Praze a Brně.

Technology

Server: Microsoft-IIS
jQuery: 3.7.1

Fonts

Google Fonts

Third-party hosts loaded (4)

code.jquery.com×3
cookiebar.cz×1
fonts.googleapis.com×1
kit.fontawesome.com×1

Social

Contact

Email

info@centrumtance.cz

DNS records live

NS

ns.grdns.cz
ns.grdns.it

MX

Show 7 MX records

1 aspmx.l.google.com
10 aspmx2.googlemail.com
10 aspmx3.googlemail.com
10 aspmx4.googlemail.com
10 aspmx5.googlemail.com
5 alt1.aspmx.l.google.com
5 alt2.aspmx.l.google.com

Verified for

Google

Email authentication partial

SPF: v=spf1 include:spf.allstar.cz include:_spf.google.com ?all
neutral (?all)
DMARC: v=DMARC1; p=none; rua=mailto:dmarc-rua@centrumtance.cz; ruf=mailto:dmarc-ruf@centrumtance.cz; adkim=r; aspf=r;
policy: none (monitoring only)
DKIM: no key found at common selectors

Certificate (current)

R13

from 2026-05-22 to 2026-08-20

Expires in 76 days

Full certificate history on crt.sh ↗

HTTP security headers

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

present

x-frame-options

findings

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

Header values

x-frame-options: SAMEORIGIN

Links to (10)

Linked from (15)