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 21,904,675 websites that are Microsoft BingBot Disallow Customers. We know of 11,728,319 live websites using Microsoft BingBot Disallow and an additional 10,176,356 sites that used Microsoft BingBot Disallow historically and 503,808 websites in the United States.
Get a list of 21,904,675 websites using Microsoft BingBot Disallow which includes location information, hosting data, contact details, 11,728,319 currently live websites and an additional 447,687 domains that redirect to sites in this list. 10,176,356 sites that used this technology previouslyand 503,808 websites in the United States currently using Microsoft BingBot Disallow.
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