indexo.dev

lucern.cz

.cz crawl

First seen 2026-05-28 · Last seen 2026-05-30 · ok HTTP/1.1 200 777 ms crawled 2026-05-30

CZ · 81.91.92.175 · AS39790 Web4U s.r.o.

Reputation 95/100 weak security headers

Classifying

HTML metadata

Title
Lucern | moderní dřevostavby za skvělé ceny
Description
Lucern Vám nabízí moderní dřevostavby na klíč za nejlepší ceny na trhu. Nabízíme vlastní typové domy. Pokud si z naší nabídky nevyberete, rádi Vám navrhneme individuální dům na míru.

Technology

Server
Apache
jQuery
3.2.1 known XSS (<3.5)
Stack
PHP
Analytics
  • Google Tag Manager
Fonts
  • Google Fonts
Social widgets
  • YouTube Embed

Third-party hosts loaded (5)

  • code.jquery.com×2
  • fonts.googleapis.com×2
  • www.youtube.com×2
  • cdnjs.cloudflare.com×1
  • www.googletagmanager.com×1

Social

Contact

Email
Phone

DNS records live

NS
  • ns.web4u.cz
  • ns2.web4u.cz
MX
  • 10 lucern.cz
TXT
  • freelo-domain-verification=64a4ce111ae0fb6f3f709627a95d14c2f6a186f76b9aa42de0ad0e86dc1bd7ad

Email authentication partial

SPF
v=spf1 ip4:81.91.92.175 ip6:2001:1568:92:32::1751 a ~all
softfail (~all)
DMARC
v=DMARC1; p=q; sp=q; fo=1; rua=mailto:dmarc@lucern.cz; ruf=mailto:dmarc@lucern.cz
no policy tag
DKIM
no key found at common selectors

Certificate (current)

R12
from 2026-04-15 to 2026-07-14
Expires in 43 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 40/100 Checked live page: https://www.lucern.cz/

present
  • x-frame-options
findings
  • missing HSTS
  • missing Content Security Policy
  • missing content type protection
  • missing Referrer Policy
  • missing Permissions Policy
Header values
x-frame-options
DENY

Links to (26)

Linked from (1)