sinstitut.cz

.cz crawl

First seen 2026-05-31 · Last seen 2026-06-01 · ok HTTP/1.1 200 454 ms crawled 2026-06-01

CZ · 193.105.158.190 · AS24806 INTERNET CZ, a.s.

Reputation 87/100 weak security headers no dmarc policy

Classifying

HTML metadata

Title: Schrödingerův institut | Středisko volného času
Description: Schrödingerův institut - Středisko volného času pro šluknovský výběžek
Language: cs

Technology

Server: Microsoft-IIS
jQuery: 3.4.1 known XSS (<3.5)

Analytics

Google Tag Manager

Ads

Meta Pixel

Fonts

Font Awesome
Google Fonts

Third-party hosts loaded (7)

cdnjs.cloudflare.com×2
fonts.googleapis.com×2
cdn.jsdelivr.net×1
connect.facebook.net×1
stackpath.bootstrapcdn.com×1
use.fontawesome.com×1
www.googletagmanager.com×1

Social

Contact

Email

sekretariat@sinstitut.cz

Registration

Registrar

REG-WEDOS

Created

2012-01-09

Expires

2027-01-08 219 days left

Updated

2019-08-13

Name servers

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

DNS records live

NS

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

MX

1 aspmx.l.google.com
10 aspmx2.googlemail.com
10 aspmx3.googlemail.com
5 alt1.aspmx.l.google.com
5 alt2.aspmx.l.google.com

Email authentication weak

SPF: v=spf1 a mx include:sparkpostmail.com ?all
neutral (?all)
DMARC: not published
DKIM: no key found at common selectors

Certificate (current)

RapidSSL TLS RSA CA G1

from 2025-09-11 to 2026-09-11

Expires in 100 days

Full certificate history on crt.sh ↗

HTTP security headers

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

findings

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