indexo.dev

alte.cz

.cz crawl

First seen 2026-05-31 · Last seen 2026-06-01 · ok HTTP/1.1 200 166 ms crawled 2026-06-01

CZ · 81.91.86.14 · AS39790 Web4U s.r.o.

Reputation 95/100 weak security headers

Classifying

HTML metadata

Title
Alte - Domácí stránka

Technology

Server
openresty

DNS records live

NS
  • ns.web4u.cz
  • ns2.web4u.cz
MX
  • 10 mx1.mailchannels.net
  • 10 mx2.mailchannels.net

Email authentication strong

SPF
v=spf1 include:_spf.web4u.cz include:_spf.google.com -all
strict (-all)
DMARC
v=DMARC1; p=reject; adkim=s; aspf=s; pct=100
policy: reject (enforced)
DKIM
no key found at common selectors

Certificate (current)

R13
from 2026-04-08 to 2026-07-07
Expires in 34 days

Full certificate history on crt.sh ↗

HTTP security headers

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

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

Linked from (2)