learnrubyonline.org

.org crawl

First seen 2026-06-01 · Last seen 2026-06-02 · ok HTTP/1.1 200 592 ms crawled 2026-06-02

US · 192.241.245.44 · AS14061 DigitalOcean, LLC

Reputation 95/100 weak security headers

Classifying

HTML metadata

Title: Learn Ruby - Free Interactive Ruby Tutorial
Description: learnrubyonline.org is a free interactive Ruby tutorial for people who want to learn Ruby, fast.
Language: en

Open Graph

url: https://www.learnrubyonline.org
title: Learn Ruby - Free Interactive Ruby Tutorial

Technology

CDN: Cloudflare
CMS: Gatsby
jQuery: 1.12.4 known XSS (<3.5)

Analytics

Google Tag Manager

Ads

Google AdSense

Third-party hosts loaded (5)

cdnjs.cloudflare.com×2
buttons.github.io×1
code.jquery.com×1
pagead2.googlesyndication.com×1
www.googletagmanager.com×1

Social

DNS records live

NS

ns1.digitalocean.com
ns2.digitalocean.com
ns3.digitalocean.com

Email authentication no MX

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

Certificate (current)

E8

from 2026-05-23 to 2026-08-21

Expires in 77 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 30/100 Checked live page: https://learnrubyonline.org/

findings

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

Links to (20)

Linked from (14)