indexo.dev

master.cz

.cz crawl dns

First seen 2026-05-15 · Last seen 2026-05-21 · ok HTTP/1.1 200 7144 ms crawled 2026-05-20

CZ · 81.31.45.148 · AS24971 MasterDC s.r.o.

Reputation 100/100

Classifying

HTML metadata

Title
MasterDC – Specialisté na firemní IT infrastrukturu
Description
O firemní IT se staráme už přes 20 let. Provozujeme dvě datová centra – v Brně a Praze – a náš tým IT specialistů poskytuje širokou škálu služeb.
Language
cs-CZ
Generator
WordPress 6.9.4
Canonical
https://www.master.cz/
Translations
  • cs
  • en

Open Graph

url
https://www.master.cz/
title
Homepage
locale
cs_CZ
site name
MasterDC
description
O firemní IT se staráme už přes 20 let. Provozujeme dvě datová centra – v Brně a Praze – a náš tým IT specialistů poskytuje širokou škálu služeb.
locale:alternate
en_GB

Technology

Server
Apache
CMS
WordPress 6.9.4
jQuery
3.7.1
Analytics
  • Google Tag Manager
Fonts
  • Google Fonts

Third-party hosts loaded (5)

  • fonts.gstatic.com×2
  • www.masterdc.com×2
  • cdn.ip2c.net×1
  • fonts.googleapis.com×1
  • www.googletagmanager.com×1

Social

Contact

Email
Phone

Registration

Registrar
REG-WEBGLOBE
Created
1998-01-30
Expires
2026-10-05 137 days left
Updated
2017-12-15
Name servers
  • ns1.master.cz
  • ns2.master.cz
  • ns3.master.cz

DNS records live

NS
  • ns1.master.cz
  • ns2.master.cz
  • ns3.master.cz
MX
  • 10 mail.master.cz
  • 25 ns3.master.cz
TXT
  • MS=07A1C78FD7087B45AA9D90A4F11B567B29AC9E9D
Verified for
  • Ahrefs
  • Brevo
  • Google

Email authentication strong

SPF
v=spf1 mx ip6:2a01:430:100:5c::2 a:d24.westmaster.com ip4:185.58.41.176 ip4:77.93.193.48 a:cis.masterdc.com a:d4023.masterinter.net a:cloud-2123.masterinter.net ip4:81.31.45.148 ip4:185.58.42.235 ip4:89.185.237.62 include:spf.protection.outlook.com a:mailing.master.cz ~all
softfail (~all)
DMARC
v=DMARC1; p=reject; rua=mailto:dmarc-reports@master.cz
policy: reject (enforced)
DKIM
Show 4 DKIM selectors
  • selector1: v=DKIM1; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDeAikRQTgV8PanpPjiUSfnXB0MMQCIrrDAslIDWyofhOYCBrSI/gVVHtzBQ2x9F7jdRpDrLZivwh6KBQT7x1…
  • selector2: v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA1/o3uGZqanEWlXrnvZ2I39s6auTs9Ee0CIGMHDDMvwPNMlVKty7MgEc7ZZkAWDyiu86TbSm8U8QkaL…
  • mail: v=DKIM1; k=rsa; s=email; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCySeCtFzPLuhtbuaxAavKEe/kX3wDlJhgQu06xeSXhVwtYaTP3s47qmifY70lrfgj8IHBhBqI9u…
  • dkim: v=DKIM1; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQC4bo8rGRDoUF2ueXNFx/di8slJ14KksXdj4maymFl6OgdYALkKXkvY3AH9mmeghvkYx4x9FlbDMKYVnirQK4…
selectors probed

Certificate (current)

Certum Domain Validation CA SHA2
from 2025-07-14 to 2026-07-14
Expires in 54 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 50/100 Checked live page: https://www.master.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; preload

Links to (6)

Linked from (1)