dumbarev.cz

.cz crawl

First seen 2026-05-31 · Last seen 2026-06-03 · ok HTTP/1.1 200 1580 ms crawled 2026-06-01

NL · 20.105.224.32 · AS8075 Microsoft Corporation

Reputation 95/100 weak security headers

Classifying

HTML metadata

Title: Vše potřebné k malování | Dům barev e-shop
Description: Ať máte v plánu malovat nebo natírat cokoliv, v e-shopu Dům barev nakoupíte vše potřebné. Jsme v tom s vámi až po špičku štětce!
Language: cs
Canonical: https://www.dumbarev.cz/

Technology

Server: Microsoft-IIS
CMS: Gatsby
jQuery: 3.5.1

Analytics

Google Tag Manager

Fonts

Google Fonts

Third-party hosts loaded (6)

stcacczdumbarevprd01.blob.core.windows.net×22
cdn.jsdelivr.net×5
www.googleoptimize.com×2
cdnjs.cloudflare.com×1
fonts.googleapis.com×1
www.googletagmanager.com×1

Social

DNS records live

NS

ns-1446.awsdns-52.org
ns-1836.awsdns-37.co.uk
ns-275.awsdns-34.com
ns-668.awsdns-19.net

MX

10 mail.dumbarev.cz

TXT

Show 4 TXT records

gd4yldtkft7s2z7hgygq14qfd6df58rk
1mdhrj3xvxj2bq0l4f5qyrw7fzqlrfh9
_hgxkg8lwrsg3wi4r36o576fw3v29k71
amazonses:74w/ZA54etGL7EXlAPrQdRHlzXtpd4g41lxbLXeljNo=

Verified for

Google

Email authentication strong

SPF

v=spf1 mx +a:smtp.crystalmails.com ip4:95.129.100.100 ip4:95.129.100.101 ip4:95.129.100.105 ip4:95.129.100.106 ~all

softfail (~all)

DMARC

v=DMARC1; p=reject; fo=1; rua=mailto:dmarc_rua@emaildefense.proofpoint.com; ruf=mailto:dmarc_ruf@emaildefense.proofpoint.com

policy: reject (enforced)

DKIM

s1: k=rsa; t=s; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAxhzUWdqT82f9nDbtjZ829PFiQk/D0CdqVC9SxFvMrzw+MAxNC1dWhqLY81Y/Eqhw04U7bVqUFRzuzG46Bl…
s2: k=rsa; t=s; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA3ScgUNxqosNX/Tl8K2IAcPuvInRv3Z2Hc1NX8BJoHiXKwdLq29jWLrXoERWkh8QLHs0l41QELm+81M9Yna…

selectors probed

Certificate (current)

DigiCert Global G2 TLS RSA SHA256 2020 CA1

from 2026-01-05 to 2027-02-06

Expires in 247 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 45/100 Checked live page: https://www.dumbarev.cz/

present

strict-transport-security

findings

short HSTS max-age
missing Content Security Policy
missing frame protection
missing content type protection
missing Referrer Policy
missing Permissions Policy

Header values

strict-transport-security: max-age=2592000