What is the OAID cookie?
This cookie is used by the ad server software to manage which ads are placed on our website, and to capture clicks on those ads. Information is collected in anonymous form, and we do not use this data to deliver specific content, advertising or otherwise, to your browser.
Our October 2026 scan found it on 7 sites (0% of the 2,450 we scanned), set before any consent.
- Purpose
- Advertising
- Belongs to
- openx.net
- Set as
- First-party on 43% of sites, third-party on 57%
- Typical lifetime
- 12 months (vendor says: 1 year) — about what the vendor documents
Sites that set OAID before consent
The highest-ranked 7 of 7 sites.
- 163.com1 tracking company
- mdpi.com1 tracking company
- ilmeteo.it9 tracking companies
- ifeng.com5 tracking companies
- hackaday.com1 tracking company
- detik.com13 tracking companies
- rediff.com42 tracking companies
Related cookies
Other cookies from openx.net.
How to stop it
Declining non-essential cookies in a site's consent banner should stop OAID 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.