bi.cz

.cz crawl

First seen 2026-05-12 · Last seen 2026-05-18 · ok HTTP/1.1 200 13612 ms crawled 2026-05-18

CZ · 217.16.184.148 · AS43541 VSHosting s.r.o.

Reputation 87/100 weak security headers no dmarc policy

sector education type homepage

HTML metadata

Title: Jazyková škola, jazykové a odborné kurzy, pomaturitní studium, firemní školení | BOHEMIA INSTITUT

Technology

Server: Apache

Analytics

Google Tag Manager

Ads

Google Ads (DoubleClick)

Third-party hosts loaded (6)

c.seznam.cz×1
googleads.g.doubleclick.net×1
toplist.cz×1
www.facebook.com×1
www.googletagmanager.com×1
www.jazykovky.cz×1

Social

DNS records live

NS

ns1.regzone.cz
ns1.regzone.de
ns1.regzone.info

MX

0 bi-cz.mail.protection.outlook.com

Email authentication weak

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

Certificates

Loading certificate

HTTP security headers

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

findings

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

Links to (7)

Linked from (3)