mozilla.org

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mozilla.org is ranked #89 in the Tranco list of the world's most popular websites (list of Oct 13, 2026), up 11 places in four weeks. The domain was registered on Jan 24, 1998, 28 years, 8 months ago, through MarkMonitor Inc., and is paid up until Jan 23, 2027. It is served through Fastly.

Global rank

#89

▲ 5 this week

Domain age

28 years

since Jan 24, 1998

Technologies

detected on the homepage

SEO score

96/100

homepage checks

Popularity rank

#89 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: #88.

Weekly Tranco rank (lower is more popular).

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

Domain registration

Registered: Jan 24, 1998 (28 years, 8 months ago)
Expires: Jan 23, 2027
Registrar: MarkMonitor Inc.
Name servers: ns1-240.akam.net, ns4-64.akam.net, ns5-65.akam.net, ns7-66.akam.net
DNSSEC: Not signed

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

Technology stack

CDN

Fastly

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.

96/100

https://www.mozilla.org/en-US/

Mozilla - Internet for people, not profit (US)

We’re working to put control of the internet back in the hands of the people using it.

21 passed · 2 warnings · 0 failed

Content

✓Title46 characters
✓Meta description86 characters
✓H1 headingExactly one H1
✓Subheadings30 H2 headings
✓Image alt textAll 22 images have alt text
✓Content lengthAbout 1,623 words

Indexing

✓IndexableNo noindex directive
✓Canonical URLhttps://www.mozilla.org/en-US/
✓robots.txtFound
!XML sitemapNot found
✓Language attributeen
ihreflang85 language alternates
!Structured dataNo JSON-LD or microdata

Social sharing

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

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-PolicySet

Server response

Final URL: https://www.mozilla.org/en-US/
HTTP status: 200
Server: granian
Response time: 1.49 s (first byte 1.49 s, from our scanner in a US data centre)
HTML size: 112 KB
Compression: br

Sites ranked near mozilla.org

Rank	Website	Registered	Built with
#84	yandex.net	2000	—
#85	vimeo.com	2004	Next.js, React, Cloudflare
#86	gwfb.net	2007	—
#87	f5.com	1996	Next.js, React, Vercel
#88	a2z.com	1994	—
#90	blogspot.com	2000	Google Fonts
#91	chatgpt.com	2022	Cloudflare
#92	triplinkintl.com	2021	Next.js, React
#93	nginx.com	2004	Next.js, React, Vercel
#94	b-cdn.net	2016	Gatsby, React, Google Analytics

Questions about mozilla.org

How popular is mozilla.org?

mozilla.org is #89 worldwide in the Tranco list published Oct 13, 2026.

How old is mozilla.org?

mozilla.org was registered on Jan 24, 1998, which makes the domain 28 years, 8 months old.

What is mozilla.org built with?

We detected Fastly on its homepage.

Who is the registrar of mozilla.org?

MarkMonitor Inc., according to the registry's RDAP record.