Magnite
AdvertisingMagnite loaded on 92 sites in our October 2026 scan: 4% 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 78% 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 4% of all sites we scanned.
About Magnite
Magnite, formed from the merger of Rubicon Project and Telaria, is a sell-side advertising platform that helps publishers auction their ad inventory.
Its rubiconproject.com domains run bidding requests between the publisher and prospective advertisers, syncing an identifier such as the uuid2-style cookie so bids can be matched to a browser across a request.
Magnite participates in the Network Advertising Initiative's opt-out program.
Often loaded alongside
Sites that load Magnite most often also load Google Ads (92%), Google (89%), Google Analytics (86%), PubMatic (65%), and Xandr (Microsoft) (55%).
Domains it loads from
- fastlane.rubiconproject.com
- pixel.rubiconproject.com
- eus.rubiconproject.com
- micro.rubiconproject.com
- token.rubiconproject.com
- partners.tremorhub.com
- prebid-a.rubiconproject.com
- secure-assets.rubiconproject.com
- link.rubiconproject.com
- prebid-server.rubiconproject.com
- ads.rubiconproject.com
- sync.search.spotxchange.com
- pbs.publishers.tremorhub.com
- mia-placement-server.rubiconproject.com
Cookies
Sites that load Magnite
The highest-ranked 30 of 92 sites.
- amazon.com33 tracking companies
- weather.com4 tracking companies
- washingtonpost.com12 tracking companies
- datadoghq.com14 tracking companies
- globo.com24 tracking companies
- cnbc.com9 tracking companies
- amazon.co.za32 tracking companies
- indiatimes.com18 tracking companies
- uol.com.br17 tracking companies
- techcrunch.com38 tracking companies
Show 20 more sites
- lemonde.fr2 tracking companies
- usps.com24 tracking companies
- nbcnews.com20 tracking companies
- fidelity.com15 tracking companies
- corriere.it12 tracking companies
- nexusmods.com5 tracking companies
- pixiv.net3 tracking companies
- amazon.com.mx34 tracking companies
- instructure.com17 tracking companies
- terra.com.br23 tracking companies
- polybuzz.ai7 tracking companies
- netkeiba.com20 tracking companies
- jalan.net27 tracking companies
- tenki.jp27 tracking companies
- aternos.org19 tracking companies
- nikkansports.com7 tracking companies
- dagbladet.no3 tracking companies
- ilmeteo.it9 tracking companies
- carsensor.net31 tracking companies
- 24h.com.vn20 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.