Web Safe rating

How do I go about recomending a change to a web site's rating?  arenanetworks.com is rated as a warning becuase of "drive-by" downloads.  *.arenanetworks.com are the login/authentication servers for guildwars2 (a common MMO game) and I'm sure they're clean.  The sites just got rated in the last couple days when my router with web safe started to block them.  I'm not the site owner though....