ivsi.cz

.cz crawl

First seen 2026-06-03 · Last seen 2026-06-03 · ok HTTP/1.1 200 1061 ms crawled 2026-06-03

DE · 3.73.27.108 · AS16509 Amazon.com, Inc.

Reputation 87/100 weak security headers no dmarc policy

Classifying

HTML metadata

Title: IVSI
Description: AISS - ASOCIACE INSTRUKTORŮ SPORTU NA SNĚHU
Language: cs
Generator: Webnode 2
Canonical: https://www.ivsi.cz/

Open Graph

url: https://www.ivsi.cz/
title: IVSI
site name: IVSI
description: AISS - ASOCIACE INSTRUKTORŮ SPORTU NA SNĚHU
article:published time: 2025-06-05T00:00:00+0200

Technology

Server: webnode
Stack: PHP

Analytics

Google Tag Manager

Fonts

Google Fonts

Third-party hosts loaded (4)

duyn491kcolsw.cloudfront.net×19
9dd82f4243.clvaw-cdnwnd.com×5
fonts.gstatic.com×1
www.googletagmanager.com×1

DNS records live

NS

ns.wedos.com
ns.wedos.cz
ns.wedos.eu
ns.wedos.net

MX

1 wes1-mx1.wedos.net
1 wes1-mx2.wedos.net
10 wes1-mx-backup.wedos.net

Email authentication weak

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

Certificate (current)

R13

from 2026-04-15 to 2026-07-14

Expires in 40 days

Full certificate history on crt.sh ↗

HTTP security headers

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

Linked from (1)

ivsi2025.cz×1