Premium version of the Yoast WordPress Plugin.
https://yoast.com/wordpress/plugins/seo-premium/
Widgets · WordPress Plugins
Get access to data on 21,805,403 websites Yoast SEO Premium Customers. We know of 9,837,496 live websites using Yoast SEO Premium and an additional 11,967,907 sites that used Yoast SEO Premium historically and 1,384,287 websites in the United States.
Yoast SEO Premium websites that are also using other technologies.
Get a list of 21,805,403 websites using Yoast SEO Premium which includes location information, hosting data, contact details, 9,837,496 currently live websites and an additional 1,715,169 domains that redirect to sites in this list. 11,967,907 sites that used this technology previouslyand 1,384,287 websites in the United States currently using Yoast SEO Premium.
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