rts.cz

.cz crawl

First seen 2026-06-01 · Last seen 2026-06-03 · ok HTTP/1.1 200 614 ms crawled 2026-06-01

CZ · 85.217.167.21 · AS205947 NDC ICT Solutions s.r.o.

Reputation 87/100 weak security headers no dmarc policy

Classifying

HTML metadata

Title: RTS, a.s. | úvodní stránka
Language: cs

Technology

Server: Microsoft-IIS
ASP.NET: 4.0.30319

Analytics

Google Tag Manager

Fonts

Google Fonts

Third-party hosts loaded (7)

c.imedia.cz×1
fonts.googleapis.com×1
jsapi.cookiesbar.io×1
toplist.cz×1
track.adform.net×1
www.google.com×1
www.googletagmanager.com×1

Social

Contact

Email

rts@rts.cz

DNS records live

NS

ns1.regzone.cz
ns1.regzone.de
ns1.regzone.info

MX

1 rts-cz.mail.protection.outlook.com

TXT

MS=73ACBC61350A638A5830EB409D05C439FC6A686D

Verified for

Google

Email authentication weak

SPF: v=spf1 include:spf-zoner-zmail.zoner.com include:_spf.google.com include:spf.protection.outlook.com include:spf.protection.outlook.com ~all
softfail (~all)
DMARC: not published
DKIM: no key found at common selectors

Certificate (current)

R12

from 2026-05-18 to 2026-08-16

Expires in 73 days

Full certificate history on crt.sh ↗

HTTP security headers

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

findings

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

Links to (5)

Linked from (5)