indexo.dev

nexum.cz

.cz dns crawl

First seen 2026-05-13 · Last seen 2026-05-19 · ok HTTP/1.1 200 5335 ms crawled 2026-05-19

NL · 40.115.33.198 · AS8075 Microsoft Corporation

Reputation 95/100 weak security headers

Classifying

HTML metadata

Title
Vyvíjíme komplexní webové a mobilní aplikace na klíč | Nexum
Description
Jsme specialisté v oboru vývoje komplexních webových i mobilních aplikací na míru, včetně odborných konzultací.
Language
cs-CZ

Technology

Server
Microsoft-IIS
CMS
Joomla
Analytics
  • Google Tag Manager
Fonts
  • Google Fonts
Third-party hosts loaded (7)
  • webmiumtest.blob.core.windows.net×22
  • fonts.googleapis.com×3
  • stackpath.bootstrapcdn.com×2
  • www.google.com×2
  • ajax.googleapis.com×1
  • fonts.gstatic.com×1
  • www.googletagmanager.com×1

Contact

Email
Phone

Registration

Registrar
REG-NEXUM
Created
2000-07-11
Expires
2027-07-10 415 days left
Updated
2025-08-29
Name servers
  • ns2.gransy.com
  • ns3.gransy.com
  • ns4.gransy.com
  • ns5.gransy.com
  • ns.gransy.com

DNS records live

NS
  • dns.webmium.com
  • ns.nexum.cz
  • ns.webmium.com
  • ns2.nexum.cz
  • ns3.nexum.cz
MX
  • 1 aspmx.l.google.com
  • 10 alt3.aspmx.l.google.com
  • 10 alt4.aspmx.l.google.com
  • 5 alt1.aspmx.l.google.com
  • 5 alt2.aspmx.l.google.com
TXT
  • hb4922014cbd746b4934dd96266812664
Verified for
  • Microsoft 365

Email authentication strong

SPF
v=spf1 include:gransy.com include:spf.protection.outlook.com include:_spf.google.com include:spf.active24.com -all
strict (-all)
DMARC
v=DMARC1; p=quarantine; rua=mailto:info.dmarc@nexum.cz; ruf=mailto:info.dmarc@nexum.cz; fo=1:d:s; pct=50
policy: quarantine · pct=50
DKIM
  • google: v=DKIM1;k=rsa;p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAuZl5IcXdz4jNwcuAqxOmK2nvJm6Ks1VJubyQNPCWQvur6Og7BA0jyAzx5WaYrFM2utV+QVZYCh1IKeSY…
selectors probed

Certificate (current)

R12
from 2026-05-04 to 2026-08-02
Expires in 73 days

Full certificate history on crt.sh ↗

HTTP security headers

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

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

Links to (2)