w3.org

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w3.org is ranked #181 in the Tranco list of the world's most popular websites (list of Oct 13, 2026), up 9 places in four weeks. The domain was registered on Jul 6, 1994, 32 years, 3 months ago, through Gandi SAS, and is paid up until Jul 5, 2029. It is served through Cloudflare.

Global rank

#181

▲ 6 this week

Domain age

32 years

since Jul 6, 1994

Technologies

detected on the homepage

SEO score

85/100

homepage checks

Popularity rank

#181 of the top 1 million sites in the Tranco research ranking, which averages several traffic and DNS sources over 30 days. Best rank in the period shown: #178.

Weekly Tranco rank (lower is more popular).

See where w3.org sits in the top 10,000

Domain registration

Registered: Jul 6, 1994 (32 years, 3 months ago)
Expires: Jul 5, 2029
Registrar: Gandi SAS
Name servers: jamie.ns.cloudflare.com, pranab.ns.cloudflare.com
DNSSEC: Not signed

From the registry's public RDAP record, checked Oct 1, 2026.

Technology stack

CDN

Cloudflare

Detected from the homepage HTML and response headers on Oct 14, 2026. Tools loaded only after scripts run (or after consent banners) may be missing.

Homepage SEO check

Checked from the HTML our scanner received on Oct 14, 2026. Content added later by JavaScript isn't counted.

85/100

https://www.w3.org/

W3C

The World Wide Web Consortium (W3C) develops standards and guidelines to help everyone build a web based on the principles of accessibility, internationalization, privacy and security.

16 passed · 7 warnings · 0 failed

Content

!Title3 characters — aim for 15–65
!Meta description184 characters — aim for 50–170
✓H1 headingExactly one H1
✓Subheadings11 H2 headings
!Image alt text2 of 11 images have no alt text
✓Content lengthAbout 801 words

Indexing

✓IndexableNo noindex directive
!Canonical URLMissing
✓robots.txtFound
!XML sitemapNot found
✓Language attributeen
!Structured dataNo JSON-LD or microdata

Social sharing

✓Open GraphTitle, description and image set
✓Twitter / X cardsummary_large_image

Technical

✓HTTPSServed over HTTPS
✓Mobile viewportFound
✓FaviconFound
✓Character encodingutf-8

Security headers

✓Strict-Transport-SecuritySet
✓Content-Security-PolicySet
✓Clickjacking protectionSet
✓X-Content-Type-OptionsSet
!Referrer-PolicyNot set

Server response

Final URL: https://www.w3.org/
HTTP status: 200
Server: cloudflare
Response time: 42 ms (first byte 41 ms, from our scanner in a US data centre)
HTML size: 49 KB
Compression: br

Sites ranked near w3.org

Rank	Website	Registered	Built with
#176	discord.com	2000	Webflow, Cloudflare, Google Tag Manager
#177	t-online.de	—	Next.js, React, Amazon CloudFront
#178	macromedia.com	1993	Fastly
#179	crashlytics.com	2011	Google Tag Manager, Google Fonts
#180	xiaomi.com	2003	Akamai, Alibaba Cloud CDN, Google Tag Manager
#182	paytmfirstgames.com	2019	Nginx, Google Fonts
#183	flickr.com	2003	—
#184	duckdns.org	2013	Nginx, jQuery, Google Analytics
#185	namebrightdns.com	2009	—
#186	vkuserphoto.ru	—	—

Questions about w3.org

How popular is w3.org?

w3.org is #181 worldwide in the Tranco list published Oct 13, 2026.

How old is w3.org?

w3.org was registered on Jul 6, 1994, which makes the domain 32 years, 3 months old.

What is w3.org built with?

We detected Cloudflare on its homepage.

Who is the registrar of w3.org?

Gandi SAS, according to the registry's RDAP record.