indexo.dev

osel.cz

.cz crawl

First seen 2026-06-01 · Last seen 2026-06-02 · ok HTTP/1.1 200 538 ms crawled 2026-06-02

CZ · 217.198.116.183 · AS34222 ZONER a.s.

Reputation 87/100 weak security headers no dmarc policy

Classifying

HTML metadata

Title
:: OSEL.CZ ::

Technology

Server
Apache
jQuery
1.8.2 known XSS (<3.5)
Stack
PHP
Ads
  • Google AdSense
Fonts
  • Google Fonts
Social widgets
  • YouTube Embed

Third-party hosts loaded (6)

  • pagead2.googlesyndication.com×4
  • cdn.performax.cz×2
  • fonts.googleapis.com×1
  • fundingchoicesmessages.google.com×1
  • purl.org×1
  • www.youtube.com×1

Registration

Registrar
REG-ZONER
Created
2001-11-16
Expires
2028-11-16 897 days left
Updated
2019-05-03
Name servers
  • ns1.regzone.cz
  • ns1.regzone.de
  • ns1.regzone.info

DNS records live

NS
  • ns1.regzone.cz
  • ns1.regzone.de
  • ns1.regzone.info
MX
  • 1 relay.zoner.com
  • 10 10mx.zoner.com
  • 15 15mx.zoner.com
Verified for
  • Google

Email authentication weak

SPF
v=spf1 include:spf-zoner-zmail.zoner.com ip4:217.198.116.183 -all
strict (-all)
DMARC
not published
DKIM
no key found at common selectors

Certificate (current)

Encryption Everywhere DV TLS CA - G2
from 2026-01-30 to 2027-03-01
Expires in 271 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 30/100 Checked live page: https://osel.cz/

findings
  • missing HSTS
  • missing Content Security Policy
  • missing frame protection
  • missing content type protection
  • missing Referrer Policy
  • missing Permissions Policy

Links to (3)

Linked from (1)