A tool from Twitter that makes it possible for advertisers to track website conversions and manage tailored audience campaigns.
https://blog.twitter.com/2016/website-conversion-tracking-and-remarketing-made-easier-and-more-flexible
Analytics and Tracking
Get access to data on 737,633 websites that are Twitter Website Universal Tag Customers. We know of 174,913 live websites using Twitter Website Universal Tag and an additional 562,720 sites that used Twitter Website Universal Tag historically and 94,345 websites in the United States.
Get a list of 737,633 websites using Twitter Website Universal Tag which includes location information, hosting data, contact details, 174,913 currently live websites and an additional 756,797 domains that redirect to sites in this list. 562,720 sites that used this technology previouslyand 94,345 websites in the United States currently using Twitter Website Universal Tag.
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