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Media, music & gameswww.relx.com

RELX — website check

An Anglo-Dutch multinational publishing and information company co-headquartered in London, United Kingdom and Amsterdam, Netherlands, founded 1993, based in Millennium Tower. RELX’s website (www.relx.com) runs on ASP.NET. It is delivered through Cloudflare. Email from the domain is protected by an enforced DMARC policy.

Logo: RELX plc · Public domain · Wikimedia Commons
73
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
40
Speed & delivery
63
Email & domain
73
SEO & markup
Official siteChecked 23 Oct 2026

About the brand

Founded1993
CountryNetherlands
HeadquartersMillennium Tower
Official websitewww.relx.com
In our catalogue from RELXElsevier

Facts: Wikidata (CC0).

Built with

AnalyticsCloudflare Web Analytics
Tag managersGoogle Tag Manager
CDNCloudflare
Web frameworksASP.NET
CSS frameworksBootstrap
JavaScript librariesjQueryjQuery UI
Security & bot protectionCloudflare Bot Management
Web fontsFont AwesomeGoogle Fonts

Hosting & delivery

Servercloudflare
Network (AS)Lexis As
HTTP versionHTTP/3
TLSTLS 1.3
CertificateGlobalSign nv-sa · valid until 2027-05-03
First response1,915 ms
Homepage weight79 KB
IPv6no

Email & domain

Mail providerMicrosoft 365
SPFyes
DMARC policyp=reject
BIMIno
DNSSECno
CAAno
Verified servicesAdobe (Admin Console), Anthropic, Apple (domain verification), Canva, Cisco Webex, Figma, GlobalSign, Google Search Console

SEO & social

Title53 characters
Meta description105 characters
Canonicalyes
Structured dataOrganization
Language versions0
Open Graphyes
Social profiles linkedInstagram, Linkedin, X, Youtube

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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