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 17,677,114 websites that are Microsoft BingBot Disallow Customers. We know of 6,968,726 live websites using Microsoft BingBot Disallow and an additional 10,708,388 sites that used Microsoft BingBot Disallow historically and 3,935,232 websites in the United States.
Get a list of 17,677,114 websites using Microsoft BingBot Disallow which includes location information, hosting data, contact details, 6,968,726 currently live websites and an additional 558,696 domains that redirect to sites in this list. 10,708,388 sites that used this technology previously and 3,935,232 websites in the United States currently using Microsoft BingBot Disallow.
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