What is the IMRID cookie?
This domain is owned by Nielsen. The main business activity is: Consumer Profiling for Online Advertising.
Our October 2026 scan found it on 12 sites (0% of the 2,450 we scanned), set before any consent.
- Purpose
- Advertising
- Belongs to
- Nielsen
- Set as
- Third-party (under another company's domain)
- Typical lifetime
- 13 months (vendor says: 390 days) — about what the vendor documents
- Where it's common
- 42% of the sites that set it use a .it domain.
Sites that set IMRID before consent
The highest-ranked 12 of 12 sites.
- corriere.it12 tracking companies
- gazzetta.it7 tracking companies
- ilfattoquotidiano.it4 tracking companies
- ilmeteo.it9 tracking companies
- politico.com31 tracking companies
- altervista.org3 tracking companies
- abcnews.com11 tracking companies
- today.com19 tracking companies
- nzherald.co.nz16 tracking companies
- stuff.co.nz19 tracking companies
Show 2 more sites
- lastampa.it6 tracking companies
- ilsole24ore.com9 tracking companies
Related cookies
Other cookies from Nielsen.
- nol_fpid3 sites
How to stop it
Declining non-essential cookies in a site's consent banner should stop IMRID being set on later visits. Blocking third-party cookies in your browser settings stops the third-party kind everywhere, and clearing cookies for a site removes any it already set.
Description from the Open Cookie Database (Apache 2.0).
Understanding this page
- How cookie lifetimes work, and why a 13-month _ga matters
What a cookie's "expires" field actually controls, why Google Analytics ships a 2-year default that many sites cut down to 13 months, and how Safari's 7-day cap on script-set cookies changes the picture.
- 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.