indexo.dev

cyberhost.cz

.cz dns crawl

First seen 2026-05-20 · Last seen 2026-06-02 · ok HTTP/1.1 200 1565 ms crawled 2026-05-27

CZ · 81.91.85.129 · AS39790 Web4U s.r.o.

Reputation 45/100 listed in spam blocklist wrong cert weak security headers

Classifying

HTML metadata

Title
CyberHost

Technology

Server
Apache
jQuery
3.1.1 known XSS (<3.5)

Third-party hosts loaded (2)

  • code.jquery.com×1
  • nette.github.io×1

DNS records live

NS
  • ns1.cyberhost.cz
  • ns2.cyberhost.cz
MX
  • 10 mail.cyberhost.cz
Verified for
  • Google

Email authentication strong

SPF
v=spf1 mx a include:fdspfus.freshemail.io ip4:81.91.85.229 ip4:81.91.85.89 ip4:81.91.85.94 ip4:81.91.85.129 -all
strict (-all)
DMARC
v=DMARC1; p=reject; rua=mailto:rua@cyberhost.cz
policy: reject (enforced)
DKIM
no key found at common selectors

Certificate (current) wrong cert

m136.server4u.cz
from 2010-02-15 to 2020-02-13
Expired 2302 days ago

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 40/100 Checked live page: https://www.cyberhost.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

Linked from (2)