Shops & marketplaceswww.asos.com
ASOS — website check
British online fashion and beauty retailer, founded 2000, based in London. ASOS’s website (www.asos.com) runs on Sitecore. It is delivered through Akamai. Email from the domain is protected by an enforced DMARC policy.
91
Brand Web Indexout of 100
Share of 26 technical checks the site passes: security, speed, email and SEO. A measurement of the website — not a popularity ranking.
78
Security
100
Speed & delivery
88
Email & domain
100
SEO & markup
Official siteChecked 22 Oct 2026
About the brand
Founded2000
CountryUnited Kingdom
HeadquartersLondon
IndustryClothing industry · Cosmetics industry
Official websitewww.asos.com
In our catalogue from ASOSTopman
Facts: Wikidata (CC0).
Built with
CMSSitecore
Cookie consent (CMP)OneTrust
CDNAkamai
Security & bot protectionAkamai Bot Manager
Monitoring & RUMNew Relic
Hosting & delivery
ServerASOS
Network (AS)Akamai
HTTP versionHTTP/3
TLSTLS 1.3
CertificateDigiCert Inc · valid until 2027-04-11
First response863 ms
Homepage weight275 KB
IPv6yes
Email & domain
Mail providerMicrosoft 365
SPFyes
DMARC policyp=reject
BIMIyes
DNSSECno
CAAyes
Verified servicesAdobe (Admin Console), Anthropic, Apple (domain verification), Atlassian Cloud, Amazon SES / AWS, Canva, DocuSign, Meta Business (domain verification)
SEO & social
Title55 characters
Meta description144 characters
Canonicalyes
Structured dataOrganization, PostalAddress, SearchAction, WebSite
Language versions12
Open Graphyes
AI crawlers & robots
AI crawlers blockednone
llms.txtno
ads.txtno
security.txtyes
Checklist
Security
- HTTPS by default
- HSTS header
- TLS 1.3
- Content-Security-Policy
- X-Content-Type-Options
- Referrer-Policy
Speed & delivery
- HTTP/3
- IPv6
- First response under 1.5 s
- Homepage under 1.5 MB
Email & domain
- SPF record
- DMARC record
- DMARC enforced (quarantine / reject)
- BIMI logo record
- DNSSEC
- CAA record
SEO & markup
- Title tag 10–70 characters
- Meta description
- Canonical link
- Exactly one H1
- Structured data (JSON-LD)
- Open Graph title and image
- All images have alt text
- XML sitemap
- robots.txt
- security.txt
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|---|---|---|---|---|---|---|---|
| Kingfisher | www.kingfisher.com | Sitecore | 100 | 80 | 75 | 91 | 88 |
| Amplifon | www.amplifon.com | Adobe Experience Manager | 100 | 80 | 63 | 82 | 82 |
| Aldi | www.aldi.co.uk | Nuxt | 100 | 60 | 88 | 64 | 79 |
| Harvey Nichols | www.harveynichols.com | Next.js | 89 | 100 | 63 | 73 | 79 |
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| John Lewis | www.johnlewis.com | Next.js | 89 | 40 | 75 | 91 | 79 |
| Londis | www.londis.co.uk | Drupal | 100 | 80 | 63 | 73 | 79 |
| Marks & Spencer | www.marksandspencer.com | Contentful | 89 | 40 | 75 | 91 | 79 |
Data from our own crawler: homepage, DNS, TLS and robots.txt of each brand’s official website. coolbrands.uk.com is an independent catalogue. It is not affiliated with Superbrands (UK) Ltd or the CoolBrands® awards programme, and does not publish their results.
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