gvid.cz

.cz crawl

First seen 2026-05-27 · Last seen 2026-05-30 · ok HTTP/1.1 200 1840 ms crawled 2026-05-30

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

Reputation 87/100 weak security headers no dmarc policy

Classifying

HTML metadata

Technology

Server
openresty
CMS
WordPress
PHP
8.4.21
jQuery
3.7.1
Fonts
  • Google Fonts

Third-party hosts loaded (2)

  • fonts.googleapis.com×3
  • gmpg.org×1

Social

DNS records live

NS
  • ns.web4u.cz
  • ns2.web4u.cz
MX
  • 5 gvid-cz.mail.eo.outlook.com
TXT
  • MS=DFC451041486EF2046C400D1AB62D4222B38DF42
Verified for
  • Apple
  • Google

Email authentication weak

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

Certificate (current)

R13
from 2026-04-15 to 2026-07-14
Expires in 44 days

HTTP security headers

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

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

Links to (28)

Linked from (1)