gumdo.cz

.cz crawl

First seen 2026-06-01 · Last seen 2026-06-02 · ok HTTP/1.1 200 1205 ms crawled 2026-06-02

CZ · 185.32.160.221 · AS24971 MasterDC s.r.o.

Reputation 95/100 weak security headers

Classifying

HTML metadata

Title: Hwang-Yong Haidong Gumdo
Description: Škola Hwang-Yong bojového umění Haidong Gumdo, historie a kde se konají tréninky.
Language: cs

Technology

Server: Microsoft-IIS
CMS: Ghost
ASP.NET: 4.0.30319
Stack: ASP.NET

Analytics

Google Tag Manager

Third-party hosts loaded (1)

www.googletagmanager.com×1

DNS records live

NS

ns1.websupport.cz
ns2.websupport.cz
ns3.websupport.eu

Email authentication no MX

SPF: not published
DMARC: not published
DKIM: no key found at common selectors

Certificate (current)

R12

from 2026-05-15 to 2026-08-13

Expires in 72 days

Full certificate history on crt.sh ↗

HTTP security headers

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

findings

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

Links to (5)

Linked from (4)