indexo.dev

dco.cz

.cz dns crawl

First seen 2026-05-21 · Last seen 2026-05-31 · ok HTTP/1.1 200 2281 ms crawled 2026-05-28

CZ · 81.0.254.108 · AS15685 CASABLANCA INT a.s.

Reputation 95/100 weak security headers

Classifying

HTML metadata

Title
Správa počítačových sítí
Description
Postaráme se o vaše uživatele, počítače, dodáme HW a SW, nastavíme váš cloud. IT správa počítačových sítí DCO s.r.o.
Language
cs-CZ
Generator
Site Kit by Google 1.179.0
Canonical
https://dco.cz/
Translations
  • cs
  • en
Feeds

Open Graph

url
https://dco.cz/
title
Homepage
locale
cs_CZ
site name
DCO | Správa IT
description
Postaráme se o vaše uživatele, počítače, dodáme HW a SW, nastavíme váš cloud. IT správa počítačových sítí DCO s.r.o.
locale:alternate
en_GB

Technology

Server
Apache
CMS
WordPress
jQuery
3.6.4
Stack
PHP
Analytics
  • Google Tag Manager
Fonts
  • Google Fonts

Third-party hosts loaded (4)

  • www.googletagmanager.com×3
  • fonts.googleapis.com×2
  • gmpg.org×1
  • www.google.com×1

Contact

Email
Phone

Registration

Registrar
REG-INTERNET-CZ
Created
2009-02-21
Expires
2034-02-20 2821 days left
Updated
2018-02-07
Name servers
  • ns1.dco.cz
  • ns2.dco.cz

DNS records live

NS
  • ns1.dco.cz
  • ns2.dco.cz
MX
  • 0 dco-cz.mail.protection.outlook.com
TXT
  • MS=32B6BAD2905072CF38C448D0607BED7619061EBB
Verified for
  • Anthropic
  • Apple
  • Google
  • Microsoft 365

Email authentication strong

SPF
v=spf1 +a +mx +ip4:81.0.254.108 +ip4:81.0.254.107 ip4:40.95.0.0/16 +include:spf.protection.outlook.com +ip4:168.245.102.208 include:spf.smartemailing.cz -all
strict (-all)
DMARC
v=DMARC1; p=quarantine; sp=none; rua=mailto:dmarc+633488@smartemailing.cz; fo=1; aspf=r; pct=100; rf=afrf; ri=86400; adkim=r
policy: quarantine · sp=none
DKIM
Show 5 DKIM selectors
  • default: v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAu2LOsCI4Gm7JapOfmFvG8qKHB73FHne4Q3eFQftnCz8G2w0bJfPuu0OIMmQryxGDz2JtxRySdu9xzv…
  • selector1: v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAuHf6EXmoWC8877ZPqhGSrhkjlrmprDv16E83jW5BsBdwGI+AYm5N+d5o5QtYTPXFODzObI4EwOJOFN…
  • selector2: v=DKIM1; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDiWKCsH4TmrNOMNgVYSpT7D/pqhFKy9PlcVLdWfMwV9AeYzzpHhmncFCL7AIwerumH5IZHcBaTO6/DTChtUb…
  • s1: k=rsa; t=s; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAuJ1Bn5yO9sMSNvy1vUBf2imnHogZ9H34OqtNUUY8tAJIU08Cn2L97bCp0GJr+MVeb3iNULtpPDH5yBXcmJ…
  • s2: k=rsa; t=s; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAt942wipe3tdTAcJ5ewPSPhOrRFVITNH0jm2ftnC90lO9NF7u00yDJ8utxBkplctEzXj2yKTvLGfS9tS175…
selectors probed

Certificate (current)

R12
from 2026-04-08 to 2026-07-07
Expires in 37 days

Full certificate history on crt.sh ↗

HTTP security headers

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

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

Links to (1)