Classic Google Analytics - sites that are using non-universal analytics code.
https://developers.google.com/analytics/devguides/collection/gajs/
Analytics and Tracking
Get access to data on 22,523,578 websites Google Analytics Classic Customers. We know of 4,526,386 live websites using Google Analytics Classic and an additional 17,997,192 sites that used Google Analytics Classic historically and 2,237,155 websites in the United States.
Get a list of 22,523,578 websites using Google Analytics Classic which includes location information, hosting data, contact details, 4,526,386 currently live websites and an additional 2,417,787 domains that redirect to sites in this list. 17,997,192 sites that used this technology previouslyand 2,237,155 websites in the United States currently using Google Analytics Classic.
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