🌐 react.com 200 🔒 SSL Valid
Checked: (cached 2026-10-22 07:51:38) ↻ Refresh 🔗 Visit site
↪
This domain forwards to react.dev (checked 0d ago)
✨ AI Description
This website is the official home for React, a JavaScript library used to build user interfaces for the web and native apps. It helps developers create reusable UI components and compose them into complex interfaces, supporting work across teams and organizations. The site also provides documentation and resources for building with React, often alongside modern tooling like Next.js and Vercel.
HTTP Status ?A three-digit code showing if the site loaded successfully (200), redirects (301/302), or has errors (4xx/5xx).Read more →
200
SSL Expires ?When the SSL certificate expires. An expired certificate causes browser security warnings.Read more →
in 43d
Domain Expires ?When the domain registration expires. If not renewed, the domain becomes available to others.Read more →
in 395d
Hosting ?The company and location where this website's server is physically located.Read more →
Unknown
Security ?Score based on key HTTP security headers: HSTS, Content-Security-Policy, and X-Frame-Options.Read more →
1/3
IP Address ?The numerical address of the server hosting this website. Reveals location, provider, and network.Read more →
172.67.187.100
Performance ?Lighthouse performance score from Google PageSpeed Insights (0–100). Measures real-world loading speed, interactivity and visual stability.
59 mob
Uptime
100%
⚡ Performance ?Lighthouse performance score from Google PageSpeed Insights (0–100). Measures real-world loading speed, interactivity and visual stability. 59
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Mobile
59
Score
95
Accessibility
100
Best Practices
92
SEO
LCP 5.54s
CLS 0.000
FCP 2.67s
TTFB 0.03s
TBT 659ms
SI 2.81s
Desktop
91
Score
95
Accessibility
100
Best Practices
92
SEO
LCP 1.59s
CLS 0.000
FCP 0.81s
TTFB 0.03s
TBT 145ms
SI 1.01s
Checked: 2026-09-05 22:53:35.799074 · View on PageSpeed
🛠️ Tech Stack ?Technologies detected on this website: CMS, frameworks, libraries, CDN, and analytics tools. 6
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📊 Analytics
Google Analytics Google Tag Manager
🌐 CDN
Cloudflare
⚙️ Framework
Next.js
☁️ Hosting
Vercel
⚡ JS Framework
React
📸 Screenshot Processing...
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🌐 DNS Records ?DNS translates domain names to IP addresses. Records control where the site, email, and services are directed.Read more →
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A (IPv4)104.21.64.194172.67.187.100
AAAA (IPv6)2606:4700:3036::6815:40c22606:4700:3032::ac43:bb64
NShattie.ns.cloudflare.comjunade.ns.cloudflare.com
TXT (1)
v=spf1 -all
📋 WHOIS / RDAP ?Public registration data: who registered the domain, when, and when it expires.Read more →
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RegistrarKey-Systems GmbH
Registered1994-11-22
Expires2027-11-21 (in 395 days)
Last Updated2026-07-08
Statusclient transfer prohibited
🔒 SSL Certificate ?Encrypts the connection between browsers and this website. Valid SSL = HTTPS works.Read more → Valid
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Subject (CN)react.com
IssuerGoogle Trust Services
Valid From2026-09-05
Valid Until2026-12-04 (43 days left)
SANs (2)react.com*.react.com
📡 HTTP Headers ?Metadata sent by the server: reveals software, caching rules, and security configuration.Read more →
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Status200
ServerVercel
Content-Typetext/html; charset=utf-8
Final URLhttps://react.dev/
strict-transport-securitymax-age=63072000
cache-controlpublic, max-age=0, must-revalidate
Security headers ?HTTP headers that protect visitors from attacks. HSTS forces HTTPS, CSP controls resource loading, X-Frame-Options prevents clickjacking.Read more →
HSTS
Content-Security-Policy
X-Frame-Options
🏠 Hosting ?Physical infrastructure: where the server is, who operates it, and what network it belongs to.Read more →
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IP Address172.67.187.100
ProviderUnknown
OrganizationN/A
ASNN/A
LocationN/A
🛡️ Security Score F (2/7)
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Valid SSL
HSTS
CSP
X-Frame-Options
X-Content-Type
Referrer-Policy
Permissions-Policy
🗺️ Sitemap & Robots
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Open to search engines
This site's robots.txt lets crawlers access its main content. Search engines can index it normally.
Areas hidden from crawlers:
📁 Other paths 1
Show raw disallow rules (1)
/version/
Sitemap Not found
🔗 Social & Meta Tags Complete
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TitleReact
DescriptionReact is the library for web and native user interfaces. Build user interfaces out of individual pieces called components written in JavaScript. React is designed to let you seamlessly combine components written by independent people, teams, and organizations.
OG TitleReact
OG DescriptionReact is the library for web and native user interfaces. Build user interfaces out of individual pieces called components written in JavaScript. React is designed to let you seamlessly combine components written by independent people, teams, and organizations.
OG Imagehttps://react.dev/images/og-home.png
OG preview
OG Typewebsite
Twitter Cardsummary_large_image
Canonical URLhttps://react.dev/
Languageen
📧 Mail Security ?Email authentication records (SPF & DMARC) that prevent spoofing and phishing from this domain.Read more →
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SPF✓ Present
v=spf1 -all
DMARC✓ Present
v=DMARC1; p=reject; rua=mailto:[email protected];
🌍 Other TLDs ?Other top-level domain variants of this domain name and their availability. 19 active 3 for sale 1 available
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.com current
.net ●
.org ●
.info ●
.io ●
.co ●
.dev ●
.app ●
.me ●
.biz Available
.eu taken
.xyz ●
.fi ●
.se taken
.de ●
.uk ●
.fr ●
.nl taken
.es ●
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📡 Uptime Monitor
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Current Status 🟢 Online
HTTP Status 200
Response Time 154ms
Last Checked 2026-10-18 12:00:46.561488
Uptime (30d) 100%