The website has disallow rules for Ahrefs Bot.
https://ahrefs.com
Robots.txt
Get access to data on 11,428,670 websites that are Ahrefs Bot Disallow Customers. We know of 4,320,735 live websites using Ahrefs Bot Disallow and an additional 7,107,935 sites that used Ahrefs Bot Disallow historically and 2,075,523 websites in the United States.
Get a list of 11,428,670 websites using Ahrefs Bot Disallow which includes location information, hosting data, contact details, 4,320,735 currently live websites and an additional 2,583,105 domains that redirect to sites in this list. 7,107,935 sites that used this technology previouslyand 2,075,523 websites in the United States currently using Ahrefs Bot Disallow.
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