This cookie name is being set on 64,781 websites and 322 distinct domains and we have seen it bein used in the following objects:

  • 64,781 HTTP cookies

Cookie origin and purpose

Cookie classification

  • unknown (confidence 1)

Sample values

Sample value:
Sample value:
Sample value:

Domains targeted by PREF cookie

This list includes both third-party domains set by tracking and adversing companies, as well as the first-party domains of the websites that use this cookie name.

Websites setting PREF cookie

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