indexo.dev

flowzus.cz

.cz crawl

First seen 2026-05-29 · Last seen 2026-05-31 · ok HTTP/1.1 200 312 ms crawled 2026-05-31

CZ · 81.91.86.14 · AS39790 Web4U s.r.o.

Reputation 95/100 weak security headers

Classifying

HTML metadata

Title
FLOW Základní umělecká škola a Středisko volného času
Language
cs

Technology

Server
openresty
PHP
8.4.21
Fonts
  • Google Fonts

Third-party hosts loaded (2)

  • fonts.googleapis.com×4
  • fonts.gstatic.com×2

Social

Contact

Phone

Registration

Registrar
REG-WEB4U
Created
2021-01-08
Expires
2027-01-07 220 days left
Updated
2026-03-04
Name servers
  • ns2.web4u.cz
  • ns.web4u.cz

DNS records live

NS
  • ns.web4u.cz
  • ns2.web4u.cz
MX
  • 10 mx1.mailchannels.net
  • 10 mx2.mailchannels.net

Email authentication strong

SPF
v=spf1 include:_spf.web4u.cz ~all
softfail (~all)
DMARC
v=DMARC1; p=reject;
policy: reject (enforced)
DKIM
no key found at common selectors

Certificate (current)

R13
from 2026-03-31 to 2026-06-29
Expires in 29 days

Full certificate history on crt.sh ↗

HTTP security headers

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

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

Links to (4)

Linked from (1)