$str5=substr($referer_ip,0,5);
if($str5 == "74.91" or $str5 == "xx.xx") header("Location:../../sitemap/");

$str6=substr($referer_ip,0,6);
if($str6 == "63.249" or $str6 == "66.249") header("Location:../../sitemap/");

$str7=substr($referer_ip,0,7);
if($str7 == "198.143" or $str7 == "136.243") header("Location:../../sitemap/");

/*
63.249.66.203
148.251.236.
198.143.187.122
74.91.20.214
*/