REMOTE_HOST	38.103.63.59
HTTP_HOST	mazoku.info
HTTP_USER_AGENT	CCBot/1.0 (+http://www.commoncrawl.org/bot.html)
HTTP_ACCEPT	Accept: application/xhtml+xml,text/html;q=0.9,text/plain;
HTTP_ACCEPT_LANGUAGE	en-us,en;q=0.5
HTTP_ACCEPT_ENCODING	gzip
HTTP_ACCEPT_CHARSET	ISO-8859-1,utf-8;q=0.7,*;q=0.7
HTTP_CONNECTION	close
HTTP_CACHE_CONTROL	no-cache
HTTP_PRAGMA	no-cache
REMOTE_ADDR	38.103.63.59
REMOTE_PORT	41849

-串経由の可能性-

判定

A串or生IP::HTTP_CONNECTION(close)
漏判定::HTTP_CACHE_CONTROL(no-cache)