indexo.dev

zslns.cz

.cz crawl

First seen 2026-05-23 · Last seen 2026-05-28 · ok HTTP/1.1 200 2995 ms crawled 2026-05-28

CZ · 217.11.227.76 · AS15685 CASABLANCA INT a.s.

Reputation 89/100 weak security headers dmarc monitor-only

Classifying

HTML metadata

Title
Základní škola Ledeč nad Sázavou
Description
Naše škola se rozprostírá v šesti budovách s moderními třídami, širokou nabídkou aktivit a dostupnou veřejnou tělocvičnou! Přidejte se k nám!
Language
cs
Feeds

Technology

Server
Apache
jQuery
3.0.0 known XSS (<3.5)
Stack
PHP
Fonts
  • Google Fonts

Third-party hosts loaded (4)

  • cdn.antee.cz×2
  • fonts.googleapis.com×2
  • fonts.gstatic.com×1
  • www.google.com×1

Social

Contact

Email
Phone

Registration

Registrar
REG-ACTIVE24
Created
2010-03-19
Expires
2027-03-18 290 days left
Updated
2026-01-24
Name servers
  • alfa.ns.active24.cz
  • beta.ns.active24.cz
  • gama.ns.active24.sk

DNS records live

NS
  • alfa.ns.active24.cz
  • beta.ns.active24.cz
  • gama.ns.active24.sk
MX
  • 0 zslns-cz.mail.protection.outlook.com
Verified for
  • Microsoft 365

Email authentication partial

SPF
v=spf1 include:spf.protection.outlook.com ip4:37.221.250.22 -all
strict (-all)
DMARC
v=DMARC1; p=none; pct=100; rua=mailto:pesekj@zslns.cz; ruf=mailto:pesekj@zslns.cz
policy: none (monitoring only)
DKIM
  • selector1: v=DKIM1; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDPuZ1ekJ+LQFyqLZMNnbU2dE4pA8pMfMujcgv3WzcXEj/5U/AEKm8jOfxq/f1l7CD6pVYXVppA4yRnrIz8mE…
selectors probed

Certificate (current)

R13
from 2026-05-14 to 2026-08-12
Expires in 72 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 45/100 Checked live page: https://www.zslns.cz/

present
  • strict-transport-security
findings
  • short HSTS max-age
  • missing Content Security Policy
  • missing frame protection
  • missing content type protection
  • missing Referrer Policy
  • missing Permissions Policy
Header values
strict-transport-security
max-age=2592000

Links to (10)

Linked from (1)