IPアドレスリモートホストとオマケでUA

ip_address|$_SERVER["REMOTE_ADDR"];
allow from 54.158.15.97
remote_host|$_SERVER["REMOTE_HOST"];
allow from ec2-54-158-15-97.compute-1.amazonaws.com
user_agent|$_SERVER["HTTP_USER_AGENT"];
CCBot/2.0 (http://commoncrawl.org/faq/)