Premium version of the Yoast WordPress Plugin.
https://yoast.com/wordpress/plugins/seo-premium/
Widgets · WordPress Plugins
Get access to data on 20,581,785 websites Yoast SEO Premium Customers. We know of 9,890,668 live websites using Yoast SEO Premium and an additional 10,691,117 sites that used Yoast SEO Premium historically and 1,445,373 websites in the United States.
Yoast SEO Premium websites that are also using other technologies.
Get a list of 20,581,785 websites using Yoast SEO Premium which includes location information, hosting data, contact details, 9,890,668 currently live websites and an additional 1,300,177 domains that redirect to sites in this list. 10,691,117 sites that used this technology previouslyand 1,445,373 websites in the United States currently using Yoast SEO Premium.
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