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4developers.org.pl

.pl crawl

First seen 2026-05-22 · Last seen 2026-05-30 · ok HTTP/1.1 200 6595 ms crawled 2026-05-28

PL · 194.150.98.183 · AS31242 Play

Reputation 100/100

sector tech type homepage

HTML metadata

Title
4Developers 2026 – Największy Festiwal IT dla Programistów w Polsce
Description
4Developers Warszawa 2026 to konferencja IT dla praktyków. Architektura systemów, Cloud & DevOps, programowanie, AI w praktyce i rozwój kompetencji miękkich - wiedza oparta na realnych projektach i doświadczeniach z produkcji.
Language
en-US
Generator
WordPress 6.7.2
Canonical
https://4developers.org.pl/
Feeds

Open Graph

url
https://4developers.org.pl
title
4Developers 2026 - Interdyscyplinarny Festiwal IT w Polsce.
locale
en_US
image:url
https://4developers.org.pl/wp-content/uploads/2026/02/4developers-konferencja-2026.jpg
site name
4Developers 2026
description
4Developers Warszawa 2026 to konferencja IT dla praktyków. Architektura systemów, Cloud & DevOps, programowanie, AI w praktyce i rozwój kompetencji miękkich - wiedza oparta na realnych projektach i doświadczeniach z produkcji.

Technology

Server
Apache
CMS
WordPress 6.7.2
jQuery
3.7.1
Analytics
  • Google Tag Manager
Fonts
  • Adobe Fonts
  • Font Awesome
  • Google Fonts
Third-party hosts loaded (13)
  • cdn.jsdelivr.net×4
  • use.fontawesome.com×3
  • static.addtoany.com×2
  • www.facebook.com×2
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  • maps.googleapis.com×1
  • px.ads.linkedin.com×1
  • use.typekit.net×1
  • www.googletagmanager.com×1

Social

Contact

Phone

DNS records live

NS
  • ns1.4developers.org.pl
  • ns2.4developers.org.pl
MX
  • 20 pro-eml-conf.networkers.pl
TXT
  • smv=rvtrjfnxrvz1uhyt
Verified for
  • Google

Email authentication strong

SPF
v=spf1 mx include:_spf.jupiter.salesmanago.pl -all
strict (-all)
DMARC
v=DMARC1; p=quarantine; rua=mailto:dmarc-tech@networkers.pl; ruf=mailto:dmarc-tech@networkers.pl; fo=1; adkim=r; aspf=r; pct=100; rf=afrf; ri=86400; sp=reject
policy: quarantine · sp=reject
DKIM
no key found at common selectors

Certificate (current)

R13
from 2026-04-18 to 2026-07-17
Expires in 46 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 55/100 Checked live page: https://4developers.org.pl/

present
  • strict-transport-security
  • permissions-policy
findings
  • missing Content Security Policy
  • missing frame protection
  • missing content type protection
  • missing Referrer Policy
Header values
permissions-policy
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strict-transport-security
max-age=63072000; includeSubDomains; preload

Links to (8)

Linked from (2)