The website has disallow rules for Alexa's ia_archiver bot.
https://support.alexa.com/hc/en-us/articles/200450194-Alexa-s-Web-and-Site-Audit-Crawlers
Robots.txt · AI Bot
Get access to data on 11,068,451 websites that are Alexa Bot Disallow Customers. We know of 5,502,757 live websites using Alexa Bot Disallow and an additional 5,565,694 sites that used Alexa Bot Disallow historically and 2,361,518 websites in the United States.
Get a list of 11,068,451 websites using Alexa Bot Disallow which includes location information, hosting data, contact details, 5,502,757 currently live websites and an additional 567,406 domains that redirect to sites in this list. 5,565,694 sites that used this technology previouslyand 2,361,518 websites in the United States currently using Alexa Bot Disallow.
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