Energy, telecoms & utilitieswww.tescomobile.com

Tesco Mobile — website check

British mobile virtual network operator, founded 2003, based in Welwyn Garden City. Tesco Mobile’s website (www.tescomobile.com) runs on Adobe Commerce (Magento). Email from the domain is protected by an enforced DMARC policy.

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.

Security

100

Speed & delivery

Email & domain

SEO & markup

Official siteChecked 23 Oct 2026

About the brand

Founded2003

CountryUnited Kingdom

HeadquartersWelwyn Garden City

IndustryTelecommunications industry

Part ofTesco

Official websitewww.tescomobile.com

Facts: Wikidata (CC0).

UK footprint

435

listed locations

regions

340

towns & cities

Listed as “Tesco Mobile”.

Store counts compiled from public map listings, October 2026. Listings are grouped by the name they carry; a company’s own store count can differ.

Built with

E-commerce platformsAdobe Commerce (Magento)

CMSAdobe Experience Manager

Tag managersTealium iQ

CSS frameworksBootstrap

JavaScript librariesRequireJS webpack

Hosting platformsUpsun (Platform.sh)

Site searchAlgolia

Monitoring & RUMNew Relic

Hosting & delivery

Network (AS)Fastly

HTTP versionHTTP/3

TLSTLS 1.3

CertificateLet's Encrypt · valid until 2027-01-15

First response1,111 ms

Homepage weight426 KB

IPv6yes

Email & domain

Mail providerProofpoint

SPFyes

DMARC policyp=reject

BIMIno

DNSSECno

CAAno

Verified servicesMeta Business (domain verification), GlobalSign, Google Search Console, Microsoft 365

SEO & social

Title62 characters

Meta description160 characters

Canonicalyes

Structured dataOrganization, PostalAddress, SearchAction, WebSite

Language versions0

Open Graphno

Social profiles linkedFacebook, Instagram, X, Youtube

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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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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