Index Exchange
AdvertisingIndex Exchange loaded on 56 sites in our October 2026 scan: 2% of the 2,450 most-visited sites we checked, before any visitor had given consent.
Category: Advertising. A company can do several jobs; this is its main role on the pages we saw.
Its cookies typically last about 3 months. On 73% of the sites where it loaded, a consent banner was already present but hadn't been answered yet. It's especially common on .jp sites: 14% of them load it, versus 2% of all sites we scanned.
About Index Exchange
Index Exchange is a sell-side advertising platform that runs real-time bidding auctions on behalf of publishers.
Its casalemedia.com and indexww.com domains typically handle a bid request or an identity-syncing call, part of the auction machinery that decides which ad wins a given placement.
Index Exchange participates in the Network Advertising Initiative's opt-out program.
Often loaded alongside
Sites that load Index Exchange most often also load PubMatic (93%), Google Ads (91%), Magnite (88%), Google (86%), and Google Analytics (84%).
Domains it loads from
- htlb.casalemedia.com
- dsum-sec.casalemedia.com
- js-sec.indexww.com
- ssum-sec.casalemedia.com
- dsum.casalemedia.com
- ssum.casalemedia.com
Cookies
Sites that load Index Exchange
The highest-ranked 30 of 56 sites.
- amazon.com33 tracking companies
- datadoghq.com14 tracking companies
- amazon.co.za32 tracking companies
- indiatimes.com18 tracking companies
- techcrunch.com38 tracking companies
- usps.com24 tracking companies
- fidelity.com15 tracking companies
- nexusmods.com5 tracking companies
- amazon.com.mx34 tracking companies
- instructure.com17 tracking companies
Show 20 more sites
- vnexpress.net14 tracking companies
- netkeiba.com20 tracking companies
- tenki.jp27 tracking companies
- oricon.co.jp36 tracking companies
- aternos.org19 tracking companies
- syosetu.com24 tracking companies
- 24h.com.vn20 tracking companies
- goodreturns.in25 tracking companies
- purdue.edu19 tracking companies
- politico.com31 tracking companies
- nielsen.com10 tracking companies
- slate.com20 tracking companies
- hindustantimes.com36 tracking companies
- idnes.cz42 tracking companies
- ctvnews.ca38 tracking companies
- amazon.ae32 tracking companies
- xero.com18 tracking companies
- newsbreak.com9 tracking companies
- nicovideo.jp24 tracking companies
- myanimelist.net20 tracking companies
Understanding this page
- What the tracker categories mean
What "advertising," "analytics," "social," "consent" and the rest actually mean for a company or a cookie, and how CookieTosser decides which one applies.
- First-party vs third-party cookies (and why "first-party" still tracks you)
What the distinction actually means technically, why browsers only block one of the two, and how CNAME cloaking, server-side tagging and cookies like _ga let sites keep tracking under their own domain.
- How to block or limit trackers
Browser privacy settings, content blockers, Global Privacy Control and clearing cookies compared honestly — what each one actually stops, what it doesn't, and what it costs you in return.