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# robots.txt for http://www.fourmilab.ch User-agent: * Disallow: /bullets/zounds # Audio files for illustration only Disallow: /cgi-bin/ # Dynamic services Disallow: /documents/DOS/ # Denial of service countermeasures Disallow: /hotbits/figures # Figures for illustration only Disallow: /hotbits/source # Source code Disallow: /earthview/cache/ # Ephemeral files Disallow: /earthview/satellite.html # Satellite orbital elements Disallow: /entrenous/ # Files for specific people Disallow: /etexts/www/gergel # Mirror of Gergel PDF books Disallow: /goldberg/ # Under construction Disallow: /netfone/ # Renamed to /speakfree Disallow: /serverstats/ # Changes every day, confusing Disallow: /sitemap.html # Temporary link to home page Disallow: /speakfree/unix/prior-releases # Obsolete releases Disallow: /speakfree/windows/prior-releases # Obsolete releases Disallow: /uscode/8usc/www/ # Bulk text of 8 USC Disallow: /uscode/26usc/www/ # Bulk text of 26 USC Disallow: /ustax/ # Renamed to /uscode/26usc Disallow: /yoursky/catalogues/ # Yoursky object catalogues User-agent: NPBot Disallow: / # Nameprotect.com spybot blocking User-agent: Twiceler # Moronic Twiceler cgi-bin chaser Disallow: / # Twitterbot blasts in dozens of requests in seconds, User-agent: Twitterbot Disallow: / # AhrefsBot generates lots of traffic and provides no # benefit to sites it scrapes. It is also known for # ignoring robots.txt, so we also block it in .htaccess. User-agent: AhrefsBot Disallow: / # MJ12bot generates a lot of traffic to no benefit. # It claims to respect robots.txt. Let's see. User-agent: MJ12bot Disallow: / # DotBot (Moz.com) crawls indiscriminately to no # benefit but their own. User-agent: DotBot Disallow: / # MauiBot crawls indiscriminately and quickly, and # nobody knows what it is. Comes from an AWS # address range. User-agent: MauiBot Disallow: / # SEMrushBot is up to no good. In December 2019, it accounted for # almost 4% of all hits on the site. User-agent: SemrushBot Disallow: / # TurnitinBot is a "plagiarism" checker that hits the site # indiscriminately. User-agent: TurnitinBot Disallow: /
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