The robots.txt file is added to the layouts directory. This file includes rules to block specific bots from crawling the site. The following bots are blocked: MJ12bot, AhrefsBot, BLEXBot, SISTRIX Crawler, sistrix, 007ac9, 007ac9 Crawler, UptimeRobot/2.0, Ezooms Robot, Perl LWP, netEstate NE Crawler (+http://www.website-datenbank.de/), WiseGuys Robot, Turnitin Robot, Heritrix, pricepi, SurdotlyBot, and ZoominfoBot. All other bots are allowed to crawl the site. The file also includes a sitemap directive to point to the sitemap.xml file.