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 10,732,118 websites that are Alexa Bot Disallow Customers. We know of 5,651,873 live websites using Alexa Bot Disallow and an additional 5,080,245 sites that used Alexa Bot Disallow historically and 2,495,113 websites in the United States.
Get a list of 10,732,118 websites using Alexa Bot Disallow which includes location information, hosting data, contact details, 5,651,873 currently live websites and an additional 597,222 domains that redirect to sites in this list. 5,080,245 sites that used this technology previouslyand 2,495,113 websites in the United States currently using Alexa Bot Disallow.
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