w3schools.com 200
🔒 SSL Valid
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 192d
Domain Expires When the domain registration expires. If not renewed, the domain becomes available to others.Read more →
in 213d
Hosting The company and location where this website's server is physically located.Read more →
AWS
Security Score based on key HTTP security headers: HSTS, Content-Security-Policy, and X-Frame-Options.Read more →
2/3
IP Address The numerical address of the server hosting this website. Reveals location, provider, and network.Read more →
76.223.115.82
Tech Stack Technologies detected on this website: CMS, frameworks, libraries, CDN, and analytics tools. 7
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📊 Analytics
Google Tag Manager
🎨 CSS Framework
Bootstrap
🔤 Font/Icon
Font Awesome
⚡ JS Framework
Angular
React
Vue.js
📦 JS Library
jQuery
Screenshot 2026-08-20
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Captured: 2026-08-20 05:42:44 · 11.7 KB
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) | 13.248.240.13576.223.115.82 |
| NS | ns-1939.awsdns-50.co.ukns-314.awsdns-39.comns-769.awsdns-32.netns-1409.awsdns-48.org |
| MX | 5 alt1.aspmx.l.google.com5 alt2.aspmx.l.google.com1 aspmx.l.google.com10 alt3.aspmx.l.google.com10 alt4.aspmx.l.google.com10 feedback-smtp.eu-west-1.amazonses.com |
| TXT | google-site-verification=9Wi0rp8KXQ3oB2KWvpcLIbwMdqFvyZe8QmOH0YnON4g linkedin-site-verification=d7833fa0-3fe5-49fb-ab0e-f34e3749c6f5 v=spf1 include:_spf.google.com include:amazonses.com include:spf.sendinblue.com include:shops.shopify.com include:mail.zendesk.com ip4:148.122.215.227 -all MS=338A1134735F428FF6729DDF746385742F152781 Sendinblue-code:c1cb221c990a3b197b84632af64eb12a amazonses:9O9JMU+QwMbQv3k+hYpAmauno4fuJMUcWephofXN0yc= apple-domain-verification=iGza4rmAk4yMj4vi |
WHOIS / RDAP Public registration data: who registered the domain, when, and when it expires.Read more →
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| Registrar | Amazon Registrar, Inc. |
| Registered | 2000-03-21 |
| Expires | 2027-03-21 (in 213 days) |
| Last Updated | 2026-05-15 |
| Status | client 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) | w3schools.com |
| Issuer | Amazon |
| Valid From | 2026-01-31 |
| Valid Until | 2027-02-28 (192 days left) |
| SANs (1) | w3schools.com |
HTTP Headers Metadata sent by the server: reveals software, caching rules, and security configuration.Read more →
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| Status | 200 |
| Server | N/A |
| Content-Type | text/html |
| Final URL | https://www.w3schools.com:443/ |
| strict-transport-security | max-age=86400 |
| content-security-policy | frame-ancestors 'self' https://mycourses.w3schools.com https://pathfinder.w3schools.com; upgrade-insecure-requests |
| cache-control | public, max-age=12432 |
Security headers HTTP headers that protect visitors from attacks. HSTS forces HTTPS, CSP controls resource loading, X-Frame-Options prevents clickjacking.Read more →
Hosting Physical infrastructure: where the server is, who operates it, and what network it belongs to.Read more →
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| IP Address | 76.223.115.82 |
| Provider | AWS |
| Organization | Amazon.com, Inc. |
| ASN | AS16509 |
| Country | US |
| City | Seattle |
Security Score
D (3/7)
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Sitemap & Robots
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| robots.txt | Found Blocked |
| Sitemap | Not found |
| Disallowed paths |
/images
/asp/demo_db_edit.asp
*.aspx$
/code/
/
|
Social & Meta Tags
Complete
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| Title | W3Schools Online Web Tutorials |
| Description | Well organized and easy to understand Web building tutorials with lots of examples of how to use HTML, CSS, JavaScript, SQL, Python, PHP, Bootstrap, Java, XML and more. |
| OG Title | W3Schools.com |
| OG Description | W3Schools offers free online tutorials, references and exercises in all the major languages of the web. Covering popular subjects like HTML, CSS, JavaScript, Python, SQL, Java, and many, many more. |
| OG Image | https://www.w3schools.com/images/w3schools_logo_436_2.png |
| Twitter Card | summary |
| Language | en-US |
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 include:_spf.google.com include:amazonses.com include:spf.sendinblue.com include:shops.shopify.com include:mail.zendesk.com ip4:148.122.215.227 -all |
| DMARC | ✓ Present v=DMARC1; p=reject; rua=mailto:[email protected]; pct=100; adkim=r; aspf=s |
| MX Records | 5 → alt1.aspmx.l.google.com 5 → alt2.aspmx.l.google.com 1 → aspmx.l.google.com 10 → alt3.aspmx.l.google.com 10 → alt4.aspmx.l.google.com 10 → feedback-smtp.eu-west-1.amazonses.com |