cosinus.pl

.pl crawl

First seen 2026-05-31 · Last seen 2026-06-01 · ok HTTP/1.1 200 1008 ms crawled 2026-06-01

PL · 79.133.196.140 · AS20853 eTOP sp. z o.o.

Reputation 95/100 weak security headers

Classifying

HTML metadata

Title: Cosinus - Bezpłatne Szkoły Policealne i Liceum dla Dorosłych
Description: Ogólnopolska sieć szkół dla dorosłych Cosinus, to oferta bezpłatnych szkół policealnych oraz liceów dla dorosłych! Nie wymagamy matury.
Language: pl-PL
Canonical: https://www.cosinus.pl/

Open Graph

url: https://www.cosinus.pl/
title: Cosinus - Bezpłatne Szkoły Policealne i Liceum dla Dorosłych
description: Ogólnopolska sieć szkół dla dorosłych Cosinus, to oferta bezpłatnych szkół policealnych oraz liceów dla dorosłych! Nie wymagamy matury.

Technology

Analytics

Google Tag Manager

Third-party hosts loaded (4)

apis.google.com×1
s3-eu-west-1.amazonaws.com×1
www.google.com×1
www.googletagmanager.com×1

Social

DNS records live

NS

donna.etop.pl
keira.etop.pl
kendra.etop.pl

MX

0 poczta.cosinus.pl

TXT

MS=D653C1EC5FB7AEE96D98A4EBF476627CD8697D4F

Verified for

Google

Email authentication strong

SPF

v=spf1 +a +mx +ip4:79.133.207.100 +ip4:79.133.207.101 +ip4:79.133.207.170  +ip4:20.73.232.115 +ip4:20.61.254.13 +ip4:20.61.249.88 +ip4:20.86.224.76 +ip4:20.8.218.140 +ip4:20.61.238.163 +include:_spf.jupiter.salesmanago.pl ~all

softfail (~all)

DMARC

v=DMARC1;p=reject;sp=reject;adkim=r;aspf=r;pct=100;fo=0;rf=afrf;ri=86400;rua=mailto:admin@cosinus.pl;ruf=mailto:admin@cosinus.pl

policy: reject (enforced) · sp=reject

DKIM

default: v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAxvFYmEB2ERmSXprA469aY/bj7d7uVj7tzcbYQF8hTuwlduJ4I/9ggmUHnQ2oyZSmP0kFB2vP2sEGPQ…

selectors probed

Certificate (current)

Sectigo RSA Domain Validation Secure Server CA

from 2025-11-28 to 2026-11-25

Expires in 176 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 40/100 Checked live page: https://www.cosinus.pl/

present

x-frame-options

findings

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

Header values

x-frame-options: SAMEORIGIN