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flat4.org

.org crawl

First seen 2026-06-04 · Last seen 2026-06-04 · ok HTTP/1.1 200 706 ms crawled 2026-06-04

CZ · 217.11.237.180 · AS21430 WIA spol. s.r.o.

Reputation 87/100 weak security headers no dmarc policy

Classifying

HTML metadata

Title
flat4.org - Obsah
Language
cs-cz
Feeds

Technology

Server
Apache
PHP
7.4.33 end of life
jQuery
3.4.1 known XSS (<3.5)

DNS records live

NS
  • gekon.securenet.cz
  • jaguar.securenet.cz
  • leguan.securenet.cz
MX
  • 10 mx1.securenet.cz
  • 10 mx2.securenet.cz

Email authentication weak

SPF
v=spf1 mx ip4:217.11.237.176/29 ip4:217.11.249.16/29 -all
strict (-all)
DMARC
not published
DKIM
no key found at common selectors

Certificate (current)

E7
from 2026-05-15 to 2026-08-13
Expires in 64 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 35/100 Checked live page: https://www.flat4.org/forum/

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

Links to (2)

Linked from (1)

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