The website has disallow rules for Microsoft Bing Bot.
https://blogs.bing.com/webmaster/2012/05/03/to-crawl-or-not-to-crawl-that-is-bingbots-question/
Robots.txt
Get access to data on 22,180,639 websites that are Microsoft BingBot Disallow Customers. We know of 11,275,970 live websites using Microsoft BingBot Disallow and an additional 10,904,669 sites that used Microsoft BingBot Disallow historically and 503,808 websites in the United States.
Get a list of 22,180,639 websites using Microsoft BingBot Disallow which includes location information, hosting data, contact details, 11,275,970 currently live websites and an additional 436,854 domains that redirect to sites in this list. 10,904,669 sites that used this technology previouslyand 503,808 websites in the United States currently using Microsoft BingBot Disallow.
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