indexo.dev

zsdyn.cz

.cz crawl

First seen 2026-05-27 · Last seen 2026-05-29 · ok HTTP/1.1 200 508 ms crawled 2026-05-30

CZ · 217.16.184.116 · AS43541 VSHosting s.r.o.

Reputation 89/100 weak security headers dmarc monitor-only

Classifying

HTML metadata

Title
Making sure you're not a bot!
Language
en

Technology

Server
nginx
CMS
Gatsby

DNS records live

NS
  • ns.forpsi.cz
  • ns.forpsi.it
  • ns.forpsi.net
MX
  • 10 zsdyn-cz.mail.protection.outlook.com
TXT
  • 5yr7v4kvcrk18mmbn6xmsbr9tywby80g
Verified for
  • Google

Email authentication partial

SPF
v=spf1 include:spf.protection.outlook.com include:spf.smartemailing.cz ip4:80.188.45.98 ~all
softfail (~all)
DMARC
v=DMARC1; p=none; rua=mailto:dmarc+291713@smartemailing.cz; fo=1
policy: none (monitoring only)
DKIM
  • selector1: v=DKIM1; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDRcKx0J9jhuXq5ZF3NA59kgDhTcLpNUh84mIQyXgphnSolSiaTPBAmw+MxBq7wxiZGTiI5gIDhvTOuddJO5U…
selectors probed

Certificate (current)

RapidSSL TLS RSA CA G1
from 2025-11-19 to 2026-12-04
Expires in 186 days

Full certificate history on crt.sh ↗

HTTP security headers

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

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

Linked from (2)