IP Banned

HELP! I found out Riot doesnt IP ban, but my brother was scripting and EVERYONE on the router got banned! I have 6 accounts, (not all is lvl 30), and when I asked my brother why we was banned, he said he got caught scripting. I tried to login to all my accounts, but everyone got banned for using third party programs, is this ban right?? Sorry, but I just want to know
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