indexo.dev

arnostpetracek.cz

.cz crawl

First seen 2026-05-28 · Last seen 2026-05-28 · ok HTTP/1.1 200 133 ms crawled 2026-05-31

US · 104.21.86.123 · AS13335 Cloudflare, Inc.

Reputation 87/100 weak security headers no dmarc policy

Classifying

HTML metadata

Canonical
/cs/

Technology

CDN
Cloudflare
CMS
Next.js

Registration

Registrar
REG-GRANSY
Created
2014-02-05
Expires
2027-02-04 248 days left
Updated
2025-11-21
Name servers
  • milan.ns.cloudflare.com
  • rosa.ns.cloudflare.com

DNS records live

NS
  • milan.ns.cloudflare.com
  • rosa.ns.cloudflare.com
MX
Show 6 MX records
  • 1 aspmx.l.google.com
  • 10 aspmx2.l.google.com
  • 10 aspmx3.l.google.com
  • 10 aspmx4.l.google.com
  • 10 aspmx5.l.google.com
  • 5 alt1.aspmx.l.google.com
Verified for
  • Google

Email authentication weak

SPF
v=spf1 include:_spf.google.com ~all
softfail (~all)
DMARC
not published
DKIM
no key found at common selectors

Certificate (current)

WE1
from 2026-05-16 to 2026-08-14
Expires in 75 days

Full certificate history on crt.sh ↗

HTTP security headers

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

present
  • x-content-type-options
  • referrer-policy
findings
  • missing HSTS
  • missing Content Security Policy
  • missing frame protection
  • missing Permissions Policy
Header values
referrer-policy
strict-origin-when-cross-origin
x-content-type-options
nosniff

Linked from (1)