indexo.dev

w3fools.com

.com crawl

First seen 2026-04-12 · Last seen 2026-05-13 · ok HTTP/1.1 200 1062 ms crawled 2026-05-04

US · 192.30.252.154 · AS36459 GitHub, Inc.

Reputation 70/100 wrong cert weak security headers

Classifying

HTML metadata

Title
W3Fools – Better web education for all
Description
We hope to get proper documentation resources to developers.
Language
en

Technology

CDN
Fastly
Server
GitHub.com

Social

Registration

Registrar
Squarespace Domains II LLC
Created
2011-01-08
Expires
2027-01-08 234 days left
Updated
2025-12-24
Name servers
  • ns-cloud-b1.googledomains.com
  • ns-cloud-b2.googledomains.com
  • ns-cloud-b3.googledomains.com
  • ns-cloud-b4.googledomains.com

DNS records live

NS
  • ns-cloud-b1.googledomains.com
  • ns-cloud-b2.googledomains.com
  • ns-cloud-b3.googledomains.com
  • ns-cloud-b4.googledomains.com
MX
  • 10 mxa.mailgun.org
  • 10 mxb.mailgun.org
TXT
  • v=spf1 include:mailgun.org ~all

Certificate (current) wrong cert

Sectigo Public Server Authentication CA DV R36
from 2026-04-14 to 2026-07-13
Expires in 55 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 30/100 Checked live page: https://www.w3fools.com/

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

Links to (4)

Linked from (2)