indexo.dev

gymzl.cz

.cz crawl

First seen 2026-05-27 · Last seen 2026-05-30 · ok HTTP/1.1 200 1385 ms crawled 2026-05-30

CZ · 85.118.134.158 · AS24971 MasterDC s.r.o.

Reputation 87/100 weak security headers no dmarc policy

Classifying

HTML metadata

Title
Gymnázium Zlín - Lesní čtvrť
Language
cs
Canonical
https://www.gymzl.cz/
Feeds

Open Graph

url
https://www.gymzl.cz/
title
Zprávy
site name
Gymnázium Zlín - Lesní čtvrť

Technology

Server
nginx
CMS
Joomla
jQuery
3.5.1
Stack
PHP
Analytics
  • Google Tag Manager

Third-party hosts loaded (2)

  • ajax.googleapis.com×1
  • www.googletagmanager.com×1

Social

Contact

Email
Phone

Registration

Registrar
REG-INTERNET-CZ
Created
2001-08-03
Expires
2028-08-08 799 days left
Updated
2012-04-04
Name servers
  • ns.forpsi.cz
  • ns.forpsi.it
  • ns.forpsi.net

DNS records live

NS
  • ns.forpsi.cz
  • ns.forpsi.it
  • ns.forpsi.net
MX
  • 0 gymzl-cz.mail.protection.outlook.com

Email authentication weak

SPF
v=spf1 include:spf-ms.avonet.cz include:spf.protection.outlook.com -all
strict (-all)
DMARC
not published
DKIM
no key found at common selectors

Certificate (current)

R13
from 2026-04-30 to 2026-07-29
Expires in 59 days

Full certificate history on crt.sh ↗

HTTP security headers

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

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

Links to (13)

Linked from (1)