Beispiele:
fj5025.inktomisearch.com*Mozilla/5.0 (compatible; Yahoo! Slurp;
http://help.yahoo.com/help/us/ysearch/slurp)
66.249.66.204*crawl-66-249-66-204.googlebot.com*Mozilla/5.0 (compatible; Googlebot/2.1; +
http://www.google.com/bot.html)
und so weiter ...