klee.cz

.cz crawl

First seen 2026-05-31 · Last seen 2026-06-03 · ok HTTP/1.1 200 313 ms crawled 2026-06-01

CZ · 81.91.86.11 · AS39790 Web4U s.r.o.

Reputation 87/100 weak security headers no dmarc policy

Classifying

HTML metadata

Title: Bohuslav Klee - zemní práce
Description: Bohuslav Klee zemní práce a specializované stavební činnosti.

Technology

Server: openresty

Third-party hosts loaded (1)

www.web4u.cz×1

Contact

Email

info@klee.cz

Registration

Registrar

REG-WEB4U

Created

2008-03-27

Expires

2027-03-26 294 days left

Updated

2010-01-26

Name servers

ns2.web4u.cz
ns.web4u.cz

DNS records live

NS

ns.web4u.cz
ns2.web4u.cz

MX

10 mx1.mailchannels.net
10 mx2.mailchannels.net

Email authentication weak

SPF: v=spf1 include:_spf.web4u.cz ~all
softfail (~all)
DMARC: not published
DKIM: no key found at common selectors

Certificate (current)

R12

from 2026-03-26 to 2026-06-24

Expires in 20 days

Full certificate history on crt.sh ↗

HTTP security headers

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

findings

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