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Shops & marketplacescastore.com

Castore — website check

British sportswear and athletic clothing company, founded 2015, based in Manchester. Castore’s website (castore.com) runs on Shopify. It is delivered through Cloudflare. Email from the domain is protected by an enforced DMARC policy.

76
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.

100
Security
60
Speed & delivery
75
Email & domain
64
SEO & markup
Official siteChecked 23 Oct 2026

About the brand

Founded2015
CountryUnited Kingdom
HeadquartersManchester
Official websitecastore.com

Facts: Wikidata (CC0).

Built with

E-commerce platformsShopify
AnalyticsCloudflare Web Analytics
Tag managersGoogle Tag Manager
CDNCloudflareunpkg
PersonalizationNosto
Live chat & supportGorgias
Email marketingKlaviyo
Security & bot protectionCloudflare Bot Management
CAPTCHAhCaptchaGoogle reCAPTCHA
PaymentsPayPalShop Pay
ReviewsYotpo
Accessibility overlaysaccessiBe

Hosting & delivery

Servercloudflare
Network (AS)Cloudflare
HTTP versionHTTP/3
TLSTLS 1.3
CertificateLet's Encrypt · valid until 2027-01-05
First response4,088 ms
Homepage weight609 KB
IPv6yes

Email & domain

Mail providerMicrosoft 365
SPFyes
DMARC policyp=reject
BIMIyes
DNSSECno
CAAno
Verified servicesApple (domain verification), Google Search Console, Klaviyo, Shopify

SEO & social

Title42 characters
Meta description125 characters
Canonicalyes
Structured dataOrganization, SearchAction, WebSite
Language versions11
Open Graphno
Social profiles linkedFacebook, Instagram, Tiktok

AI crawlers & robots

AI crawlers blockednone
llms.txtno
ads.txtno
security.txtno

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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