rider.cz

.cz crawl

First seen 2026-05-31 · Last seen 2026-06-01 · ok HTTP/1.1 200 402 ms crawled 2026-06-01

US · 104.21.87.218 · AS13335 Cloudflare, Inc.

Reputation 92/100 no dmarc policy

Classifying

HTML metadata

Title: Michal Altair Valášek
Description: Personal home page

Open Graph

title: Michal Altair Valášek
description: Personal home page

Technology

CDN: Cloudflare
CMS: Ghost

Third-party hosts loaded (1)

cdnjs.cloudflare.com×1

Social

Registration

Registrar

REG-INTERNET-CZ

Created

1999-03-13

Expires

2026-10-09 128 days left

Updated

2026-05-22

Name servers

kara.ns.cloudflare.com
kip.ns.cloudflare.com

DNS records live

NS

kara.ns.cloudflare.com
kip.ns.cloudflare.com

MX

56 isaac.mx.cloudflare.net
61 linda.mx.cloudflare.net
87 amir.mx.cloudflare.net

Verified for

Google

Email authentication weak

SPF: v=spf1 include:_spf.mailersend.net include:_spf.mx.cloudflare.net ~all
softfail (~all)
DMARC: not published
DKIM: no key found at common selectors

Certificate (current)

WE1

from 2026-04-05 to 2026-07-04

Expires in 31 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 60/100 Checked live page: https://www.rider.cz/

present

strict-transport-security
x-content-type-options

findings

missing Content Security Policy
missing frame protection
missing Referrer Policy
missing Permissions Policy

Header values

x-content-type-options: nosniff
strict-transport-security: max-age=15552000; preload