indexo.dev

vcelak.cz

.cz dns

First seen 2026-06-02 · Last seen 2026-06-03 · ok HTTP/1.1 200 285 ms crawled 2026-06-03

CZ · 46.36.37.115 · AS42422 SecurityNet.cz s.r.o.

Reputation 100/100

Classifying

HTML metadata

Title
Informační a komunikační technologie - vcelak.cz
Description
Informační a komunikační technologie - vcelak.cz
Language
cs

Technology

Server
Apache
Analytics
  • Google Tag Manager
Fonts
  • Google Fonts

Third-party hosts loaded (2)

  • fonts.googleapis.com×2
  • www.googletagmanager.com×1

DNS records live

NS
  • core.vcelak.cz
  • ns2.ignum.eu
  • ns3.ignum.eu
  • ns4.ignum.eu
MX
  • 10 core.vcelak.cz
  • 20 core.vcelak.cz
Verified for
  • Google

Email authentication strong

SPF
v=spf1 ip4:46.36.37.115 a:fred.zcu.cz include:_spf.google.com -all
strict (-all)
DMARC
v=DMARC1; p=quarantine; pct=100; sp=reject; aspf=s; adkim=s; rua=mailto:postmaster@vcelak.cz; ruf=mailto:postmaster@vcelak.cz; fo=1; rf=afrf;
policy: quarantine · sp=reject
DKIM
  • default: v=DKIM1; h=sha256; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA6zPqU8tNCzzdCWTWdz1KE1+aYiOonbwU6mRc5D7JOcty6cvQsbvP1nk/ibW6Pauw+ANi…
selectors probed

Certificate (current)

E8
from 2026-04-23 to 2026-07-22
Expires in 48 days

Full certificate history on crt.sh ↗

HTTP security headers

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

present
  • strict-transport-security
  • x-frame-options
  • x-content-type-options
  • referrer-policy
  • permissions-policy
findings
  • missing Content Security Policy
Header values
referrer-policy
same-origin
x-frame-options
SAMEORIGIN
permissions-policy
camera=(), fullscreen=(self), geolocation=(), gyroscope=(), magnetometer=(), microphone=(), midi=(), payment=(), sync-xhr=()
x-content-type-options
nosniff
strict-transport-security
max-age=31536000; includeSubDomains