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w3schools.com Paid content

Categories: Development

Tags: TutorialsCodeHTMLpythonCSSsqljavascriptHow toPHPJava
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CC++C#jquerybootstrapcolorsW3.CSSXMLMySQLiconsnodejsReactgraphicsangularRaigitData ScienceCode GameTutorialsprogrammingweb developmentTrainingLearningQuizExercisesCoursesLessonsReferencesExamplesLearn to codeSource codeDemosTipswebsite

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.

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Updated: 2026-09-03 15:38 Language: English (default) Access: Normal

Profile views 9 Outbound visits 7
W3Schools Online Web Tutorials Full homepage screenshot

Website Overview

An established domain and managed infrastructure suggest continuity of operations and may support dependable delivery, although neither guarantees service quality. Several search or sharing settings need attention. Together they may make snippets, preview images or preferred URLs less consistent across platforms.

Domain and Registration

Registered in 2000, this domain has about 26 years of history. That suggests continuity, although ownership and purpose may have changed. Transfer-protection status is present, helping reduce the risk of unauthorized domain transfers. The domain uses the common .com extension, which is not an independent safety signal.

DNS and Email

The lowest TTL is 58 seconds, supporting rapid record changes at the cost of more frequent lookups. Nameservers are provided by Amazon Route 53, indicating managed DNS hosting. MX records point to the Google Workspace email service. No CNAME was found; the observed records resolve directly to addresses. SPF and DMARC are configured. DKIM status is unknown.

TLS and Certificates

The certificate uses an RSA 2048-bit public key, offering broad client compatibility. The server supplied a complete certificate chain. No organization name is present in the certificate; the available fields are consistent with domain validation. The certificate was issued within the Amazon cloud or CDN ecosystem. The certificate is valid for about 393 days in total, with 180 days remaining.

HTTP and Browser Security

The response lacks these common security headers: X-Content-Type-Options, Referrer-Policy, Permissions-Policy. No X-Powered-By header was found, reducing one common source of backend fingerprinting information. No obvious internal addresses or debug information were found in the headers. No explicit CDN or WAF marker was found in the response headers. No CORS permission header was found, so browsers normally restrict cross-origin script access.

Technology Stack Analysis

The public page identifies Google Tag Manager without precise versions, leaving fewer clues for version-specific scanning.

Search and Social Sharing

The meta description has 168 characters and may be shortened in search results. No homepage canonical URL was detected. If duplicate URLs exist, consolidation may be less explicit. Open Graph is partially configured; og:type is missing. Twitter Card metadata is configured. The title has 30 characters, within a common display range.

Hosting and Email

DNSAmazon Route 53
HostingAmazon.com, Inc.
EmailGoogle Workspace
Location United States flagUnited States 13.248.240.135

Pages, Search and Sharing

Meta descriptionWell 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.
Canonical URLNot detected
LanguageEnglish (default)
Twitter Cardsummary

Social Sharing Preview

8 fields

robots.txt (opens in a new tab)

5 rules
All bots 0 allowed · 4 disallowed
  • Disallow/images
  • Disallow/asp/demo_db_edit.asp
  • Disallow*.aspx$
  • Disallow/code/
site24x7 0 allowed · 1 disallowed
  • Disallow/

Sitemaps

0

No sitemaps found

Registration details RDAP / WHOIS

RegistrarAmazon Registrar, Inc.
Registered2000-03-21
Expires2027-03-21
Domain statusclient transfer prohibited
Nameserversns-1409.awsdns-48.org、ns-1939.awsdns-50.co.uk、ns-314.awsdns-39.com、ns-769.awsdns-32.net
DNSSECunsigned

DNS records

TypeNameValueTTLPriority
Aw3schools.com13.248.240.13558—
Aw3schools.com76.223.115.8258—
MXw3schools.comaspmx.l.google.com601
MXw3schools.comalt1.aspmx.l.google.com605
MXw3schools.comalt2.aspmx.l.google.com605
MXw3schools.comalt3.aspmx.l.google.com6010
MXw3schools.comalt4.aspmx.l.google.com6010
MXw3schools.comfeedback-smtp.eu-west-1.amazonses.com6010
NSw3schools.comns-1409.awsdns-48.org60—
NSw3schools.comns-1939.awsdns-50.co.uk60—
NSw3schools.comns-314.awsdns-39.com60—
NSw3schools.comns-769.awsdns-32.net60—
TXTw3schools.comMS=338A1134735F428FF6729DDF746385742F15278160—
TXTw3schools.comSendinblue-code:c1cb221c990a3b197b84632af64eb12a60—
TXTw3schools.comamazonses:9O9JMU+QwMbQv3k+hYpAmauno4fuJMUcWephofXN0yc=60—
TXTw3schools.comapple-domain-verification=iGza4rmAk4yMj4vi60—
TXTw3schools.comgoogle-site-verification=9Wi0rp8KXQ3oB2KWvpcLIbwMdqFvyZe8QmOH0YnON4g60—
TXTw3schools.comlinkedin-site-verification=d7833fa0-3fe5-49fb-ab0e-f34e3749c6f560—
TXTw3schools.comv=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 -all60—
DMARC_dmarc.w3schools.comv=DMARC1; p=reject; rua=mailto:[email protected]; pct=100; adkim=r; aspf=s60—

TLS and certificates

AssessmentNormal configuration
Supported protocolsTLSv1.2
Negotiated protocolTLSv1.2
Certificate subjectw3schools.com
IssuerAmazon
Valid until2027-02-28T23:59 · Remaining when checked: 180 days
Verification detailsCertificate trust: Passed · Hostname match: Passed

HTTP response headers

HeaderValue
content-typetext/html
cache-controlpublic, max-age=4769
strict-transport-securitymax-age=86400
content-security-policyframe-ancestors 'self' https://mycourses.w3schools.com https://pathfinder.w3schools.com; upgrade-insecure-requests

Identified technologies

Google Tag Manager

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