WordPress Version 3.9.*
https://make.wordpress.org/core/version-3-9-project-schedule/
Content Management System
Get access to data on 1,905,953 websites that are Wordpress 3.9 Customers. We know of 39,170 live websites using Wordpress 3.9 and an additional 1,866,783 sites that used Wordpress 3.9 historically and 17,794 websites in the United States.
Get a list of 1,905,953 websites using Wordpress 3.9 which includes location information, hosting data, contact details, 39,170 currently live websites and an additional 9,717 domains that redirect to sites in this list. 1,866,783 sites that used this technology previously and 17,794 websites in the United States currently using Wordpress 3.9.
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