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Travel & hotelswww.aerlingus.com

Aer Lingus — website check

Flag-carrier airline of Ireland, founded 1936, based in Dublin Airport. Aer Lingus’s website is www.aerlingus.com; we did not detect a known CMS or shop platform. It is delivered through Amazon CloudFront. Email from the domain is protected by an enforced DMARC policy.

Logo: Unknown author · Public domain · Wikimedia Commons
39
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.

44
Security
40
Speed & delivery
63
Email & domain
18
SEO & markup
Official siteChecked 22 Oct 2026

About the brand

Founded1936
CountryIreland
HeadquartersDublin Airport
IndustryAir transport
Part ofInternational Airlines Group
Official websitewww.aerlingus.com

Facts: Wikidata (CC0).

Built with

CDNAmazon CloudFront

Hosting & delivery

Serverbon
Network (AS)Amazon Web Services
HTTP versionHTTP/3
TLSTLS 1.3
CertificateAmazon · valid until 2027-03-18
First response2,050 ms
Homepage weight10 KB
IPv6no

Email & domain

Mail providerMicrosoft 365
SPFyes
DMARC policyp=reject
BIMIno
DNSSECno
CAAno
Verified servicesAnthropic, Atlassian Cloud, GlobalSign, Microsoft 365

SEO & social

Title23 characters
Meta descriptionno
Canonicalno
Structured datano
Language versions0
Open Graphno

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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Butlins www.butlins.com Next.js 100606382 79
KLM www.klm.com Angular 100607573 79
London North Eastern Railway www.lner.co.uk Contentful 89407591 79
National Rail www.nationalrail.co.uk Next.js 100406391 79
Big Bus Tours www.bigbustours.com Adobe Commerce (Magento) 100606373 76

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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