indexo.dev

donfelder.cz

.cz crawl

First seen 2026-05-27 · Last seen 2026-05-30 · ok HTTP/1.1 200 736 ms crawled 2026-05-30

SK · 37.9.175.211 · AS51013 WebSupport s.r.o.

Reputation 87/100 weak security headers no dmarc policy

Classifying

HTML metadata

Title
Aktivity: Potápění, Obchod, Penzion, Kniha - Don Felder
Description
Don Felder potápěčské centrum a obchod, penzion v Chorvatsku, kniha potápěčský průvodce
Language
cs
Feeds

Technology

Server
openresty

DNS records live

NS
  • ns1.websupport.cz
  • ns2.websupport.cz
  • ns3.websupport.eu
MX
  • 10 mailin1.donfelder.cz
  • 100 mailin2.donfelder.cz

Email authentication weak

SPF
not published
DMARC
not published
DKIM
  • mail: v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAuPNcKpPWnJiEv6y2AKZXGSaWagCE7m4dCFGEnoCB7ekMOL2QrWs+Or3Ywz5atvcMXOWEif2U/S27sC…
selectors probed

Certificate (current)

R13
from 2026-04-22 to 2026-07-21
Expires in 51 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 35/100 Checked over plain HTTP: http://www.donfelder.cz/

findings
  • checked over plain HTTP
  • missing Content Security Policy
  • missing frame protection
  • missing content type protection
  • missing Referrer Policy
  • missing Permissions Policy

Links to (1)

Linked from (2)