indexo.dev

stackuj.cz

.cz crawl

First seen 2026-06-03 · Last seen 2026-06-03 · ok HTTP/1.1 200 238 ms crawled 2026-06-04

CZ · 89.221.213.128 · AS197019 WEDOS Internet, a.s.

Reputation 87/100 weak security headers no dmarc policy

Classifying

HTML metadata

Title
Stackuj.cz｜Josef Tětek
Description
Bitcoin
Language
en

Open Graph

url
https://stackuj.cz
title
Stackuj.cz｜Josef Tětek
description
Oficiální stránky bitcoinového edukátora Josefa Tětka.

Technology

Server
ATS
jQuery
2.2.4 known XSS (<3.5)
Fonts
  • Google Fonts

Third-party hosts loaded (4)

  • code.jquery.com×1
  • fonts.googleapis.com×1
  • fonts.gstatic.com×1
  • stackuj.substack.com×1

Social

Registration

Registrar
REG-WEDOS
Created
2021-01-22
Expires
2027-01-21 230 days left
Updated
2025-02-05
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
Show 6 MX records
  • 1 aspmx.l.google.com
  • 10 alt3.aspmx.l.google.com
  • 10 alt4.aspmx.l.google.com
  • 15 ejkjwqgyhhtg3huemvk6rt6qgnc5d2bbqlo4ovpvjelwazotty3q.mx-verification.google.com
  • 5 alt1.aspmx.l.google.com
  • 5 alt2.aspmx.l.google.com

Email authentication weak

SPF
not published
DMARC
not published
DKIM
  • k2: v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAv2aC2KjGKLOwTweBY5A9RpjsxaBXR9r7OAU6U8/zn92ivImI75naUujWbItRI/QmL1jy5PWGqLwoUA…
selectors probed

Certificate (current)

YR1
from 2026-06-02 to 2026-08-31
Expires in 87 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 30/100 Checked live page: https://stackuj.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 (1)