Cookie database › PubMatic

ADUSERCOOKIE cookie

Marketing cookie set by PubMatic, lasting 90 days.

Is ADUSERCOOKIE firing on your site before anyone says yes?

Conzent holds ADUSERCOOKIE and every other marketing cookie until the visitor accepts, and Consent Mode v2 keeps your Google Ads and GA4 reporting accurate. Registered IAB TCF CMP, Google-certified. From €7 per site a month.

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What the ADUSERCOOKIE cookie does

PubMatic UserId. this identifier to identify each user uniquely. Some of the uses of this anonymous identifier are to support frequency capping, perform UID sync ups with DSP's, DMP's. DMP's / DP's push audicne data against this ID. API publishers sends this ID while making API requests to PubMatic AdServer. UAS Ad Engine also uses this cookie for FCAP purposes.

Who sets it

Consent category: marketing

Marketing cookies follow visitors across sites to build advertising profiles and to measure campaigns. They always require prior consent, and a consent banner has to block them until the visitor agrees.

NameADUSERCOOKIE
CategoryMarketing
Lifetime90 days
Set byPubMatic

Other cookies from the same vendor

Is this cookie on your site?

Conzent's scanner lists every cookie your site sets, classifies each one the way this page does, and shows which are set before the visitor has consented. Try Conzent free for 14 days, or look up another cookie.

From the Conzent cookie database, last updated 2026-10-16. Descriptions come from vendor documentation, cookie policies and our own scans; write to support@getconzent.com to correct one.