singlekras.cz

.cz crawl

First seen 2026-05-31 · Last seen 2026-06-02 · ok HTTP/1.1 200 297 ms crawled 2026-06-01

CZ · 81.91.86.13 · AS39790 Web4U s.r.o.

Reputation 89/100 weak security headers dmarc monitor-only

Classifying

HTML metadata

Title: SINGLETRAIL Moravský kras
Description: Vyrazte na kolo do lesů v Moravském krasu. Díky léty prověřené metodice stavění tras si jízdu v přírodě maximálně užijete.
Language: cs

Technology

Server: openresty

Analytics

Google Tag Manager

Fonts

Adobe Fonts

Third-party hosts loaded (7)

cdnjs.cloudflare.com×2
www.google.com×2
cdn-images.mailchimp.com×1
maps.googleapis.com×1
maxcdn.bootstrapcdn.com×1
use.typekit.net×1
www.googletagmanager.com×1

Social

Contact

Email

info@singlekras.cz

Phone

+420 731 462 595

DNS records live

NS

ns.web4u.cz
ns2.web4u.cz

MX

10 mx.redcat.cz

Email authentication partial

SPF

v=spf1 mx a include:_spf.redcat.cz ~all

softfail (~all)

DMARC

v=DMARC1; p=none;

policy: none (monitoring only)

DKIM

k2: v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAv2aC2KjGKLOwTweBY5A9RpjsxaBXR9r7OAU6U8/zn92ivImI75naUujWbItRI/QmL1jy5PWGqLwoUA…

selectors probed

Certificate (current)

R13

from 2026-04-10 to 2026-07-09

Expires in 37 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 40/100 Checked live page: https://singlekras.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: SAMEORIGIN