WordPress Version 3.9.*
https://make.wordpress.org/core/version-3-9-project-schedule/
Content Management System
Get access to data on 1,808,425 websites Wordpress 3.9 Customers. We know of 28,416 live websites using Wordpress 3.9 and an additional 1,780,009 sites that used Wordpress 3.9 historically and 12,017 websites in the United States.
Get a list of 1,808,425 websites using Wordpress 3.9 which includes location information, hosting data, contact details, 28,416 currently live websites and an additional 6,546 domains that redirect to sites in this list. 1,780,009 sites that used this technology previouslyand 12,017 websites in the United States currently using Wordpress 3.9.
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