BidSwitch
AdvertisingBidSwitch loaded on 49 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 12 months. On 57% 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 BidSwitch
BidSwitch, part of Criteo since its 2022 acquisition of Iponweb, the company that built it, is an intermediary that connects ad exchanges and demand-side platforms so they can exchange bid requests without integrating directly.
Its x.bidswitch.net domain typically runs a cookie-sync call, matching identifiers between the ad exchanges and buyers passing bids through it, using cookies such as tuuid.
Often loaded alongside
Sites that load BidSwitch most often also load Google Ads (92%), Xandr (Microsoft) (86%), Google Analytics (82%), Google (80%), and PubMatic (76%).
Domains it loads from
- x.bidswitch.net
Cookies
- tuuid52 sites
- tuuid_lu44 sites
- custom_data22 sites
Sites that load BidSwitch
The highest-ranked 30 of 49 sites.
- amazon.com33 tracking companies
- globo.com24 tracking companies
- amazon.co.za32 tracking companies
- usps.com24 tracking companies
- livejournal.com11 tracking companies
- amazon.com.mx34 tracking companies
- terra.com.br23 tracking companies
- vnexpress.net14 tracking companies
- jalan.net27 tracking companies
- tenki.jp27 tracking companies
Show 20 more sites
- oricon.co.jp36 tracking companies
- haberler.com14 tracking companies
- syosetu.com24 tracking companies
- carsensor.net31 tracking companies
- 24h.com.vn20 tracking companies
- goodreturns.in25 tracking companies
- kakuyomu.jp18 tracking companies
- chordtela.com34 tracking companies
- piccoma.com25 tracking companies
- rambler.ru9 tracking companies
- animanch.com22 tracking companies
- purdue.edu19 tracking companies
- politico.com31 tracking companies
- hatena.ne.jp19 tracking companies
- slate.com20 tracking companies
- audible.com25 tracking companies
- hindustantimes.com36 tracking companies
- simplisafe.com31 tracking companies
- idnes.cz42 tracking companies
- asahi.com41 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.