What the PUBMDCID cookie does
Registers a unique ID that identifies the user's device during return visits across websites that use the same ad network. The ID is used to allow targeted ads.
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.
| Name | PUBMDCID |
|---|---|
| Category | Marketing |
| Lifetime | 3 months |
| Set by | PubMatic |
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From the Conzent cookie database, last updated 2026-09-27. Descriptions come from vendor documentation, cookie policies and our own scans; write to support@getconzent.com to correct one.