indexo.dev

cotenfrontend.pl

.pl crawl

First seen 2026-05-31 · Last seen 2026-06-01 · ok HTTP/1.1 200 741 ms crawled 2026-06-01

US · 99.83.231.61 · AS16509 Amazon.com, Inc.

Reputation 84/100 spf without fallback no dmarc policy

Classifying

HTML metadata

Title
WTF: Co ten Frontend - 13-tygodniowy program praktycznej nauki podstaw frontendu po polsku!
Description
13-tygodniowy program praktycznej nauki podstaw frontendu po polsku!
Language
pl
Generator
Gatsby 5.13.3

Open Graph

url
https://cotenfrontend.pl
description
13-tygodniowy program praktycznej nauki podstaw frontendu po polsku!

Technology

CDN
Netlify
CMS
Gatsby 5.13.3
Cookie consent
  • Cookiebot

Third-party hosts loaded (1)

  • consent.cookiebot.com×1

Contact

Phone

DNS records live

NS
  • pat.ns.cloudflare.com
  • tom.ns.cloudflare.com
MX
  • 10 mx01.mail.icloud.com
  • 10 mx02.mail.icloud.com
TXT
  • apple-domain=WM2hnEDyhR6qNpei
Verified for
  • Google
  • Meta

Email authentication weak

SPF
v=spf1 redirect=icloud.com
missing all
DMARC
not published
DKIM
no key found at common selectors

Certificate (current)

E7
from 2026-04-23 to 2026-07-22
Expires in 50 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 75/100 Checked live page: https://cotenfrontend.pl/

present
  • strict-transport-security
  • x-frame-options
  • x-content-type-options
  • referrer-policy
findings
  • missing Content Security Policy
  • missing Permissions Policy
Header values
referrer-policy
same-origin
x-frame-options
DENY
x-content-type-options
nosniff
strict-transport-security
max-age=31536000

Links to (2)

Linked from (9)