kalkula.cz

.cz crawl

First seen 2026-06-01 · Last seen 2026-06-02 · ok HTTP/1.1 200 1415 ms crawled 2026-06-02

CZ · 185.59.2.14 · AS60086 Valvera s.r.o.

Reputation 100/100

Classifying

HTML metadata

Title: Kalkulačka online s páskou - Kalkula.cz
Description: Kalkulačka online pro výpočty na internetu s páskou a základními i pokročilými matematickými funkcemi.
Language: cs

Open Graph

url: http://www.kalkula.cz
title: Kalkulačka s páskou
site name: Online kalkulačka
description: Kalkulačka s páskou se základními i pokročilými matematickými funkcemi

Technology

Ads

Google AdSense

Third-party hosts loaded (2)

pagead2.googlesyndication.com×1
www.numerino.cz×1

DNS records live

NS

ns1.regzone.cz
ns1.regzone.de
ns1.regzone.info

Email authentication no MX

SPF: not published
DMARC: not published
DKIM: no key found at common selectors

Certificate (current)

R12

from 2026-05-10 to 2026-08-08

Expires in 66 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 70/100 Checked live page: https://www.kalkula.cz/

present

strict-transport-security
x-frame-options
x-content-type-options

findings

missing Content Security Policy
missing Referrer Policy
missing Permissions Policy

Header values

x-frame-options: DENY
x-content-type-options: nosniff
strict-transport-security: max-age=16000000; includeSubDomains; preload;

Links to (10)

Linked from (5)