indexo.dev

react-tutorial.app

.app crawl

First seen 2026-04-14 · Last seen 2026-05-08 · ok HTTP/1.1 200 823 ms crawled 2026-05-08

US · 104.26.0.68 · AS13335 Cloudflare, Inc.

Reputation 100/100

Classifying

HTML metadata

Title
React Tutorial
Description
React Tutorial is the easiest, most interactive way to learn & practice modern React online. Learn in an interactive environment. Understand how React works not just how to build with React.
Language
en
Canonical
https://react-tutorial.app
Translations
  • en
  • es
  • fr

Technology

CDN
Cloudflare
Analytics
  • Cloudflare Insights

Third-party hosts loaded (2)

  • res.cloudinary.com×11
  • static.cloudflareinsights.com×1

Social

DNS records live

NS
  • amanda.ns.cloudflare.com
  • elmo.ns.cloudflare.com
TXT
Show 4 TXT records
  • v=spf include:mailgun.org ~all
  • yandex-verification: c9a899be883fe919
  • ca3-331f56faf5ea4db481f6a3f59d5beb94
  • google-site-verification=9WjxcF2D_84Y43U6U_4LU9985heLglkDPF0CS48yFo4

Email authentication no MX

SPF
v=spf1 include:mailgun.org ~all
softfail (~all)
DMARC
not published
DKIM
no key found at common selectors

Certificate (current)

WE1
from 2026-03-27 to 2026-06-25
Expires in 37 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 50/100 Checked live page: https://react-tutorial.app/

present
  • strict-transport-security
findings
  • missing Content Security Policy
  • missing frame protection
  • missing content type protection
  • missing Referrer Policy
  • missing Permissions Policy
Header values
strict-transport-security
max-age=31556926

Links to (5)

Linked from (2)