What does nielsen.com track?
Before any consent, nielsen.com loaded 10 tracking companies and set 7 advertising or analytics cookies.
That's more tracking companies than 92% of the 2,450 sites we scanned.
Scanned October 2, 2026 from Germany, loading www.nielsen.com once and clicking nothing. How we scan
- Tracking companies
- 10
- Tracking cookies
- 7
- Third-party hosts
- 25
- Cookies in total
- 8
Consent banner
The page loaded OneTrust, a consent management platform. Everything below was recorded before anyone answered it. 10 tracking companies still loaded while it was unanswered.
Companies contacted before consent
5 of the 17 companies it contacted before consent were advertising companies.
- Demandbase2 requestsAdvertising
tag.demandbase.com, tag-logger.demandbase.com
- Index Exchange2 requestsAdvertising
dsum-sec.casalemedia.com
- Magnite2 requestsAdvertising
partners.tremorhub.com, pixel.rubiconproject.com
- LiveRamp1 requestAdvertising
id.rlcdn.com
- PubMatic1 requestAdvertising
image2.pubmatic.com
- Google Analytics3 requestsAnalytics
www.googletagmanager.com
- 6sense2 requestsAnalytics
s.company-target.com, api.company-target.com
- AB Tasty1 requestAnalytics
try.abtasty.com
- Parse.ly1 requestAnalytics
cdn.parsely.com
- Knotch1 requestAnalytics
www.knotch-cdn.com
Other third parties (content delivery, consent, functional, unclassified)
- OneTrust13 requestsConsent banner
cdn.cookielaw.org, geolocation.onetrust.com
- Weglot5 requestsFunctional
cdn.weglot.com, api.weglot.com
- WordPress.com3 requestsFunctional
s0.wp.com, stats.wp.com, pixel.wp.com
- Google2 requestsFunctional
fonts.googleapis.com, fonts.gstatic.com
- jsDelivr2 requestsContent delivery
cdn.jsdelivr.net
- Cloudflare1 requestContent delivery
cdnjs.cloudflare.com
- unpkg1 requestContent delivery
unpkg.com
Cookies set before consent
The longest-lived tracking cookie it set was tv_UIDM, from Magnite, lasting about 13 months.
| Cookie | Purpose | Set by | Lasts |
|---|---|---|---|
| CMID | Advertising | casalemedia.com (third party) | 12 months |
| CMPRO | Advertising | casalemedia.com (third party) | 3 months |
| CMPS | Advertising | casalemedia.com (third party) | 3 months |
| tuuid | Advertising | company-target.com (third party) | 13 months |
| tuuid_lu | Advertising | company-target.com (third party) | 13 months |
| tv_UIDM | Advertising | tremorhub.com (third party) | 13 months |
| tvid | Advertising | tremorhub.com (third party) | 12 months |
| OptanonConsent | Functional | nielsen.com | 12 months |
Understanding this page
- How to see which cookies and trackers a website loads
A hands-on walkthrough for checking what a site sets before you've clicked anything, using Chrome and Firefox's built-in tools, plus how CookieTosser automates the same check every month.
- What counts as valid cookie consent in the EU
The rules that actually govern cookie banners — the ePrivacy Directive, the GDPR consent standard, the Planet49 ruling, the strictly-necessary exemption, and what "reject" has to offer compared with "accept.
- Consent management platforms explained
What a CMP banner is actually doing behind the scenes, how the IAB's TCF standard and Google's Consent Mode v2 fit in, and why a banner being present is no guarantee that nothing loads before you answer it.