Plugin to block all those spammers (or bots) who fill out forms on WordPress.
https://wordpress.org/plugins/wp-contact-form-7-spam-blocker/
Widgets · WordPress Plugins
Get access to data on 16,479 websites that are Spam Protect for Contact Form 7 Customers. We know of 10,071 live websites using Spam Protect for Contact Form 7 and an additional 6,408 sites that used Spam Protect for Contact Form 7 historically and 3,647 websites in the United States.
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Get a list of 16,479 websites using Spam Protect for Contact Form 7 which includes location information, hosting data, contact details, 10,071 currently live websites and an additional 15,791 domains that redirect to sites in this list. 6,408 sites that used this technology previouslyand 3,647 websites in the United States currently using Spam Protect for Contact Form 7.
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