a.co

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a.co is ranked #2,065 in the Tranco list of the world's most popular websites (list of Oct 13, 2026), up 841 places in four weeks. Its homepage uses Amazon Ads. It is served through Amazon CloudFront.

Global rank

#2,065

▲ 10 this week

Domain age

—

Registration date unavailable

Technologies

detected on the homepage

SEO score

74/100

homepage checks

Popularity rank

#2,065 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: #2,065.

Weekly Tranco rank (lower is more popular).

See where a.co sits in the top 10,000

Domain registration

The registry for .co does not publish registration data over RDAP.

Technology stack

Advertising

Amazon Ads

CDN

Amazon CloudFront

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.

74/100

https://www.amazon.com/

Amazon.com. Spend less. Smile more.

Free shipping on millions of items. Get the best of Shopping and Entertainment with Prime. Enjoy low prices and great deals on the largest selection of everyday essentials and other products, including fashion, home, beauty, electronics, Alexa Devices, sporting goods, toys, automotive, pets, baby, books, video games, musical instruments, office supplies, and more.

13 passed · 8 warnings · 2 failed

Content

✓Title35 characters
!Meta description366 characters — aim for 50–170
✕H1 headingMissing in the served HTML
✓Subheadings8 H2 headings
!Image alt text1 of 19 images have no alt text
✓Content lengthAbout 631 words

Indexing

✓IndexableNo noindex directive
✓Canonical URLhttps://www.amazon.com/
!robots.txtNot found
!XML sitemapNot found
✓Language attributeen-us
!Structured dataNo JSON-LD or microdata

Social sharing

!Open Graph2 of 3 key tags set
!Twitter / X cardMissing

Technical

✓HTTPSServed over HTTPS
✕Mobile viewportMissing
✓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.amazon.com/
HTTP status: 200
Server: Server
Response time: 5.28 s (first byte 5.07 s, from our scanner in a US data centre)
HTML size: 638 KB
Compression: gzip

Sites ranked near a.co

Rank	Website	Registered	Built with
#2,060	dondominio.com	2006	Apache
#2,061	strava.com	2003	Next.js, React, Amazon CloudFront
#2,062	aadrm.com	2011	—
#2,063	meetup.com	1998	Next.js, React
#2,064	techtarget.com	1999	Cloudflare, jQuery, Cloudflare Web Analytics
#2,066	split.io	2015	Webflow, Cloudflare, Google Tag Manager
#2,067	pnas.org	1996	Cloudflare
#2,068	m.me	—	—
#2,069	livedns.co.uk	1999	—
#2,070	clevertap-prod.com	2021	—