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Arts, culture & eventswww.sothebys.com
Sotheby's — website check
Auction house, founded 1744, based in New York City. Sotheby's’s website (www.sothebys.com) runs on Adobe Experience Manager. It is delivered through jsDelivr. Email from the domain is protected by an enforced DMARC policy.
70
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.
67
Security
40
Speed & delivery
63
Email & domain
91
SEO & markup
Official siteChecked 22 Oct 2026
About the brand
Founded1744
CountryUnited States
HeadquartersNew York City
IndustryAuction
Official websitewww.sothebys.com
Facts: Wikidata (CC0).
Built with
Cookie consent (CMP)OneTrust
Customer data platformsSegment
Web serversEnvoy
CAPTCHAGoogle reCAPTCHA
Social & widgetsFacebook SDK
Hosting & delivery
Network (AS)Amazon Web Services
HTTP versionHTTP/3
TLSTLS 1.3
CertificateGlobalSign nv-sa · valid until 2026-12-17
First response1,629 ms
Homepage weight539 KB
IPv6no
Email & domain
Mail providerMimecast
SPFyes
DMARC policyp=reject
BIMIno
DNSSECno
CAAno
Verified servicesAnthropic, Apple (domain verification), Atlassian Cloud, DocuSign, Google Search Console, Klaviyo, Microsoft 365, OneTrust
SEO & social
Title60 characters
Meta description188 characters
Canonicalyes
Structured dataOrganization, WebPage, WebSite
Language versions4
Open Graphyes
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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| Edinburgh Festival Fringe | www.edfringe.com | — | 89 | 100 | 63 | 73 | 79 |
| Hammersmith Apollo | www.eventimapollo.com | — | 89 | 80 | 63 | 82 | 79 |
| Legoland Windsor | www.legoland.co.uk | Umbraco | 89 | 40 | 75 | 91 | 79 |
| London Coliseum | londoncoliseum.org | WordPress | 100 | 60 | 63 | 82 | 79 |
| Madame Tussauds | www.madametussauds.com | Umbraco | 89 | 80 | 63 | 82 | 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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